false, 'post_tag' => false, 'post_format' => false );
} else {
$post_format_base = apply_filters( 'post_format_rewrite_base', 'type' );
$rewrite = array(
'category' => array(
'hierarchical' => true,
'slug' => get_option('category_base') ? get_option('category_base') : 'category',
'with_front' => ! get_option('category_base') || $wp_rewrite->using_index_permalinks(),
'ep_mask' => EP_CATEGORIES,
),
'post_tag' => array(
'slug' => get_option('tag_base') ? get_option('tag_base') : 'tag',
'with_front' => ! get_option('tag_base') || $wp_rewrite->using_index_permalinks(),
'ep_mask' => EP_TAGS,
),
'post_format' => $post_format_base ? array( 'slug' => $post_format_base ) : false,
);
}
register_taxonomy( 'category', 'post', array(
'hierarchical' => true,
'query_var' => 'category_name',
'rewrite' => $rewrite['category'],
'public' => true,
'show_ui' => true,
'show_admin_column' => true,
'_builtin' => true,
) );
register_taxonomy( 'post_tag', 'post', array(
'hierarchical' => false,
'query_var' => 'tag',
'rewrite' => $rewrite['post_tag'],
'public' => true,
'show_ui' => true,
'show_admin_column' => true,
'_builtin' => true,
) );
register_taxonomy( 'nav_menu', 'nav_menu_item', array(
'public' => false,
'hierarchical' => false,
'labels' => array(
'name' => __( 'Navigation Menus' ),
'singular_name' => __( 'Navigation Menu' ),
),
'query_var' => false,
'rewrite' => false,
'show_ui' => false,
'_builtin' => true,
'show_in_nav_menus' => false,
) );
register_taxonomy( 'link_category', 'link', array(
'hierarchical' => false,
'labels' => array(
'name' => __( 'Link Categories' ),
'singular_name' => __( 'Link Category' ),
'search_items' => __( 'Search Link Categories' ),
'popular_items' => null,
'all_items' => __( 'All Link Categories' ),
'edit_item' => __( 'Edit Link Category' ),
'update_item' => __( 'Update Link Category' ),
'add_new_item' => __( 'Add New Link Category' ),
'new_item_name' => __( 'New Link Category Name' ),
'separate_items_with_commas' => null,
'add_or_remove_items' => null,
'choose_from_most_used' => null,
),
'capabilities' => array(
'manage_terms' => 'manage_links',
'edit_terms' => 'manage_links',
'delete_terms' => 'manage_links',
'assign_terms' => 'manage_links',
),
'query_var' => false,
'rewrite' => false,
'public' => false,
'show_ui' => false,
'_builtin' => true,
) );
register_taxonomy( 'post_format', 'post', array(
'public' => true,
'hierarchical' => false,
'labels' => array(
'name' => _x( 'Format', 'post format' ),
'singular_name' => _x( 'Format', 'post format' ),
),
'query_var' => true,
'rewrite' => $rewrite['post_format'],
'show_ui' => false,
'_builtin' => true,
'show_in_nav_menus' => current_theme_supports( 'post-formats' ),
) );
}
add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority
/**
* Get a list of registered taxonomy objects.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.0.0
* @uses $wp_taxonomies
* @see register_taxonomy
*
* @param array $args An array of key => value arguments to match against the taxonomy objects.
* @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
* @param string $operator The logical operation to perform. 'or' means only one element
* from the array needs to match; 'and' means all elements must match. The default is 'and'.
* @return array A list of taxonomy names or objects
*/
function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) {
global $wp_taxonomies;
$field = ('names' == $output) ? 'name' : false;
return wp_filter_object_list($wp_taxonomies, $args, $operator, $field);
}
/**
* Return all of the taxonomy names that are of $object_type.
*
* It appears that this function can be used to find all of the names inside of
* $wp_taxonomies global variable.
*
* Array('category', 'post_tag')
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wp_taxonomies
*
* @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts)
* @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
* @return array The names of all taxonomy of $object_type.
*/
function get_object_taxonomies($object, $output = 'names') {
global $wp_taxonomies;
if ( is_object($object) ) {
if ( $object->post_type == 'attachment' )
return get_attachment_taxonomies($object);
$object = $object->post_type;
}
$object = (array) $object;
$taxonomies = array();
foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) {
if ( array_intersect($object, (array) $tax_obj->object_type) ) {
if ( 'names' == $output )
$taxonomies[] = $tax_name;
else
$taxonomies[ $tax_name ] = $tax_obj;
}
}
return $taxonomies;
}
/**
* Retrieves the taxonomy object of $taxonomy.
*
* The get_taxonomy function will first check that the parameter string given
* is a taxonomy object and if it is, it will return it.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wp_taxonomies
* @uses taxonomy_exists() Checks whether taxonomy exists
*
* @param string $taxonomy Name of taxonomy object to return
* @return object|bool The Taxonomy Object or false if $taxonomy doesn't exist
*/
function get_taxonomy( $taxonomy ) {
global $wp_taxonomies;
if ( ! taxonomy_exists( $taxonomy ) )
return false;
return $wp_taxonomies[$taxonomy];
}
/**
* Checks that the taxonomy name exists.
*
* Formerly is_taxonomy(), introduced in 2.3.0.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.0.0
*
* @uses $wp_taxonomies
*
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy exists.
*/
function taxonomy_exists( $taxonomy ) {
global $wp_taxonomies;
return isset( $wp_taxonomies[$taxonomy] );
}
/**
* Whether the taxonomy object is hierarchical.
*
* Checks to make sure that the taxonomy is an object first. Then Gets the
* object, and finally returns the hierarchical value in the object.
*
* A false return value might also mean that the taxonomy does not exist.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses taxonomy_exists() Checks whether taxonomy exists
* @uses get_taxonomy() Used to get the taxonomy object
*
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy is hierarchical
*/
function is_taxonomy_hierarchical($taxonomy) {
if ( ! taxonomy_exists($taxonomy) )
return false;
$taxonomy = get_taxonomy($taxonomy);
return $taxonomy->hierarchical;
}
/**
* Create or modify a taxonomy object. Do not use before init.
*
* A simple function for creating or modifying a taxonomy object based on the
* parameters given. The function will accept an array (third optional
* parameter), along with strings for the taxonomy name and another string for
* the object type.
*
* Nothing is returned, so expect error maybe or use taxonomy_exists() to check
* whether taxonomy exists.
*
* Optional $args contents:
*
* - label - Name of the taxonomy shown in the menu. Usually plural. If not set, labels['name'] will be used.
* - labels - An array of labels for this taxonomy.
* * By default tag labels are used for non-hierarchical types and category labels for hierarchical ones.
* * You can see accepted values in {@link get_taxonomy_labels()}.
* - description - A short descriptive summary of what the taxonomy is for. Defaults to blank.
* - public - If the taxonomy should be publicly queryable; //@TODO not implemented.
* * Defaults to true.
* - hierarchical - Whether the taxonomy is hierarchical (e.g. category). Defaults to false.
* - show_ui -Whether to generate a default UI for managing this taxonomy in the admin.
* * If not set, the default is inherited from public.
* - show_in_menu - Where to show the taxonomy in the admin menu.
* * If true, the taxonomy is shown as a submenu of the object type menu.
* * If false, no menu is shown.
* * show_ui must be true.
* * If not set, the default is inherited from show_ui.
* - show_in_nav_menus - Makes this taxonomy available for selection in navigation menus.
* * If not set, the default is inherited from public.
* - show_tagcloud - Whether to list the taxonomy in the Tag Cloud Widget.
* * If not set, the default is inherited from show_ui.
* - capabilities - Array of capabilities for this taxonomy.
* * You can see accepted values in this function.
* - rewrite - Triggers the handling of rewrites for this taxonomy. Defaults to true, using $taxonomy as slug.
* * To prevent rewrite, set to false.
* * To specify rewrite rules, an array can be passed with any of these keys
* * 'slug' => string Customize the permastruct slug. Defaults to $taxonomy key
* * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true.
* * 'hierarchical' => bool Either hierarchical rewrite tag or not. Defaults to false.
* * 'ep_mask' => const Assign an endpoint mask.
* * If not specified, defaults to EP_NONE.
* - query_var - Sets the query_var key for this taxonomy. Defaults to $taxonomy key
* * If false, a taxonomy cannot be loaded at ?{query_var}={term_slug}
* * If specified as a string, the query ?{query_var_string}={term_slug} will be valid.
* - update_count_callback - Works much like a hook, in that it will be called when the count is updated.
* * Defaults to _update_post_term_count() for taxonomies attached to post types, which then confirms
* that the objects are published before counting them.
* * Defaults to _update_generic_term_count() for taxonomies attached to other object types, such as links.
* - _builtin - true if this taxonomy is a native or "built-in" taxonomy. THIS IS FOR INTERNAL USE ONLY!
*
* @since 2.3.0
* @uses $wp_taxonomies Inserts new taxonomy object into the list
* @uses $wp Adds query vars
*
* @param string $taxonomy Taxonomy key, must not exceed 32 characters.
* @param array|string $object_type Name of the object type for the taxonomy object.
* @param array|string $args See optional args description above.
* @return null|WP_Error WP_Error if errors, otherwise null.
*/
function register_taxonomy( $taxonomy, $object_type, $args = array() ) {
global $wp_taxonomies, $wp;
if ( ! is_array( $wp_taxonomies ) )
$wp_taxonomies = array();
$defaults = array(
'labels' => array(),
'description' => '',
'public' => true,
'hierarchical' => false,
'show_ui' => null,
'show_in_menu' => null,
'show_in_nav_menus' => null,
'show_tagcloud' => null,
'capabilities' => array(),
'rewrite' => true,
'query_var' => $taxonomy,
'update_count_callback' => '',
'_builtin' => false,
);
$args = wp_parse_args( $args, $defaults );
if ( strlen( $taxonomy ) > 32 )
return new WP_Error( 'taxonomy_too_long', __( 'Taxonomies cannot exceed 32 characters in length' ) );
if ( false !== $args['query_var'] && ! empty( $wp ) ) {
if ( true === $args['query_var'] )
$args['query_var'] = $taxonomy;
else
$args['query_var'] = sanitize_title_with_dashes( $args['query_var'] );
$wp->add_query_var( $args['query_var'] );
}
if ( false !== $args['rewrite'] && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) {
$args['rewrite'] = wp_parse_args( $args['rewrite'], array(
'slug' => sanitize_title_with_dashes( $taxonomy ),
'with_front' => true,
'hierarchical' => false,
'ep_mask' => EP_NONE,
) );
if ( $args['hierarchical'] && $args['rewrite']['hierarchical'] )
$tag = '(.+?)';
else
$tag = '([^/]+)';
add_rewrite_tag( "%$taxonomy%", $tag, $args['query_var'] ? "{$args['query_var']}=" : "taxonomy=$taxonomy&term=" );
add_permastruct( $taxonomy, "{$args['rewrite']['slug']}/%$taxonomy%", $args['rewrite'] );
}
// If not set, default to the setting for public.
if ( null === $args['show_ui'] )
$args['show_ui'] = $args['public'];
// If not set, default to the setting for show_ui.
if ( null === $args['show_in_menu' ] || ! $args['show_ui'] )
$args['show_in_menu' ] = $args['show_ui'];
// If not set, default to the setting for public.
if ( null === $args['show_in_nav_menus'] )
$args['show_in_nav_menus'] = $args['public'];
// If not set, default to the setting for show_ui.
if ( null === $args['show_tagcloud'] )
$args['show_tagcloud'] = $args['show_ui'];
$default_caps = array(
'manage_terms' => 'manage_categories',
'edit_terms' => 'manage_categories',
'delete_terms' => 'manage_categories',
'assign_terms' => 'edit_posts',
);
$args['cap'] = (object) array_merge( $default_caps, $args['capabilities'] );
unset( $args['capabilities'] );
$args['name'] = $taxonomy;
$args['object_type'] = array_unique( (array) $object_type );
$args['labels'] = get_taxonomy_labels( (object) $args );
$args['label'] = $args['labels']->name;
$wp_taxonomies[ $taxonomy ] = (object) $args;
// register callback handling for metabox
add_filter( 'wp_ajax_add-' . $taxonomy, '_wp_ajax_add_hierarchical_term' );
do_action( 'registered_taxonomy', $taxonomy, $object_type, $args );
}
/**
* Builds an object with all taxonomy labels out of a taxonomy object
*
* Accepted keys of the label array in the taxonomy object:
* - name - general name for the taxonomy, usually plural. The same as and overridden by $tax->label. Default is Tags/Categories
* - singular_name - name for one object of this taxonomy. Default is Tag/Category
* - search_items - Default is Search Tags/Search Categories
* - popular_items - This string isn't used on hierarchical taxonomies. Default is Popular Tags
* - all_items - Default is All Tags/All Categories
* - parent_item - This string isn't used on non-hierarchical taxonomies. In hierarchical ones the default is Parent Category
* - parent_item_colon - The same as parent_item, but with colon : in the end
* - edit_item - Default is Edit Tag/Edit Category
* - view_item - Default is View Tag/View Category
* - update_item - Default is Update Tag/Update Category
* - add_new_item - Default is Add New Tag/Add New Category
* - new_item_name - Default is New Tag Name/New Category Name
* - separate_items_with_commas - This string isn't used on hierarchical taxonomies. Default is "Separate tags with commas", used in the meta box.
* - add_or_remove_items - This string isn't used on hierarchical taxonomies. Default is "Add or remove tags", used in the meta box when JavaScript is disabled.
* - choose_from_most_used - This string isn't used on hierarchical taxonomies. Default is "Choose from the most used tags", used in the meta box.
* - not_found - This string isn't used on hierarchical taxonomies. Default is "No tags found", used in the meta box.
*
* Above, the first default value is for non-hierarchical taxonomies (like tags) and the second one is for hierarchical taxonomies (like categories).
*
* @since 3.0.0
* @param object $tax Taxonomy object
* @return object object with all the labels as member variables
*/
function get_taxonomy_labels( $tax ) {
if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) )
$tax->labels['separate_items_with_commas'] = $tax->helps;
if ( isset( $tax->no_tagcloud ) && empty( $tax->labels['not_found'] ) )
$tax->labels['not_found'] = $tax->no_tagcloud;
$nohier_vs_hier_defaults = array(
'name' => array( _x( 'Tags', 'taxonomy general name' ), _x( 'Categories', 'taxonomy general name' ) ),
'singular_name' => array( _x( 'Tag', 'taxonomy singular name' ), _x( 'Category', 'taxonomy singular name' ) ),
'search_items' => array( __( 'Search Tags' ), __( 'Search Categories' ) ),
'popular_items' => array( __( 'Popular Tags' ), null ),
'all_items' => array( __( 'All Tags' ), __( 'All Categories' ) ),
'parent_item' => array( null, __( 'Parent Category' ) ),
'parent_item_colon' => array( null, __( 'Parent Category:' ) ),
'edit_item' => array( __( 'Edit Tag' ), __( 'Edit Category' ) ),
'view_item' => array( __( 'View Tag' ), __( 'View Category' ) ),
'update_item' => array( __( 'Update Tag' ), __( 'Update Category' ) ),
'add_new_item' => array( __( 'Add New Tag' ), __( 'Add New Category' ) ),
'new_item_name' => array( __( 'New Tag Name' ), __( 'New Category Name' ) ),
'separate_items_with_commas' => array( __( 'Separate tags with commas' ), null ),
'add_or_remove_items' => array( __( 'Add or remove tags' ), null ),
'choose_from_most_used' => array( __( 'Choose from the most used tags' ), null ),
'not_found' => array( __( 'No tags found.' ), null ),
);
$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
return _get_custom_object_labels( $tax, $nohier_vs_hier_defaults );
}
/**
* Add an already registered taxonomy to an object type.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.0.0
* @uses $wp_taxonomies Modifies taxonomy object
*
* @param string $taxonomy Name of taxonomy object
* @param string $object_type Name of the object type
* @return bool True if successful, false if not
*/
function register_taxonomy_for_object_type( $taxonomy, $object_type) {
global $wp_taxonomies;
if ( !isset($wp_taxonomies[$taxonomy]) )
return false;
if ( ! get_post_type_object($object_type) )
return false;
if ( ! in_array( $object_type, $wp_taxonomies[$taxonomy]->object_type ) )
$wp_taxonomies[$taxonomy]->object_type[] = $object_type;
return true;
}
//
// Term API
//
/**
* Retrieve object_ids of valid taxonomy and term.
*
* The strings of $taxonomies must exist before this function will continue. On
* failure of finding a valid taxonomy, it will return an WP_Error class, kind
* of like Exceptions in PHP 5, except you can't catch them. Even so, you can
* still test for the WP_Error class and get the error message.
*
* The $terms aren't checked the same as $taxonomies, but still need to exist
* for $object_ids to be returned.
*
* It is possible to change the order that object_ids is returned by either
* using PHP sort family functions or using the database by using $args with
* either ASC or DESC array. The value should be in the key named 'order'.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses wp_parse_args() Creates an array from string $args.
*
* @param int|array $term_ids Term id or array of term ids of terms that will be used
* @param string|array $taxonomies String of taxonomy name or Array of string values of taxonomy names
* @param array|string $args Change the order of the object_ids, either ASC or DESC
* @return WP_Error|array If the taxonomy does not exist, then WP_Error will be returned. On success
* the array can be empty meaning that there are no $object_ids found or it will return the $object_ids found.
*/
function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) {
global $wpdb;
if ( ! is_array( $term_ids ) )
$term_ids = array( $term_ids );
if ( ! is_array( $taxonomies ) )
$taxonomies = array( $taxonomies );
foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists( $taxonomy ) )
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
$defaults = array( 'order' => 'ASC' );
$args = wp_parse_args( $args, $defaults );
extract( $args, EXTR_SKIP );
$order = ( 'desc' == strtolower( $order ) ) ? 'DESC' : 'ASC';
$term_ids = array_map('intval', $term_ids );
$taxonomies = "'" . implode( "', '", $taxonomies ) . "'";
$term_ids = "'" . implode( "', '", $term_ids ) . "'";
$object_ids = $wpdb->get_col("SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tt.term_id IN ($term_ids) ORDER BY tr.object_id $order");
if ( ! $object_ids )
return array();
return $object_ids;
}
/**
* Given a taxonomy query, generates SQL to be appended to a main query.
*
* @since 3.1.0
*
* @see WP_Tax_Query
*
* @param array $tax_query A compact tax query
* @param string $primary_table
* @param string $primary_id_column
* @return array
*/
function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) {
$tax_query_obj = new WP_Tax_Query( $tax_query );
return $tax_query_obj->get_sql( $primary_table, $primary_id_column );
}
/**
* Container class for a multiple taxonomy query.
*
* @since 3.1.0
*/
class WP_Tax_Query {
/**
* List of taxonomy queries. A single taxonomy query is an associative array:
* - 'taxonomy' string The taxonomy being queried
* - 'terms' string|array The list of terms
* - 'field' string (optional) Which term field is being used.
* Possible values: 'term_id', 'slug' or 'name'
* Default: 'term_id'
* - 'operator' string (optional)
* Possible values: 'AND', 'IN' or 'NOT IN'.
* Default: 'IN'
* - 'include_children' bool (optional) Whether to include child terms.
* Default: true
*
* @since 3.1.0
* @access public
* @var array
*/
public $queries = array();
/**
* The relation between the queries. Can be one of 'AND' or 'OR'.
*
* @since 3.1.0
* @access public
* @var string
*/
public $relation;
/**
* Standard response when the query should not return any rows.
*
* @since 3.2.0
* @access private
* @var string
*/
private static $no_results = array( 'join' => '', 'where' => ' AND 0 = 1' );
/**
* Constructor.
*
* Parses a compact tax query and sets defaults.
*
* @since 3.1.0
* @access public
*
* @param array $tax_query A compact tax query:
* array(
* 'relation' => 'OR',
* array(
* 'taxonomy' => 'tax1',
* 'terms' => array( 'term1', 'term2' ),
* 'field' => 'slug',
* ),
* array(
* 'taxonomy' => 'tax2',
* 'terms' => array( 'term-a', 'term-b' ),
* 'field' => 'slug',
* ),
* )
*/
public function __construct( $tax_query ) {
if ( isset( $tax_query['relation'] ) && strtoupper( $tax_query['relation'] ) == 'OR' ) {
$this->relation = 'OR';
} else {
$this->relation = 'AND';
}
$defaults = array(
'taxonomy' => '',
'terms' => array(),
'include_children' => true,
'field' => 'term_id',
'operator' => 'IN',
);
foreach ( $tax_query as $query ) {
if ( ! is_array( $query ) )
continue;
$query = array_merge( $defaults, $query );
$query['terms'] = (array) $query['terms'];
$this->queries[] = $query;
}
}
/**
* Generates SQL clauses to be appended to a main query.
*
* @since 3.1.0
* @access public
*
* @param string $primary_table
* @param string $primary_id_column
* @return array
*/
public function get_sql( $primary_table, $primary_id_column ) {
global $wpdb;
$join = '';
$where = array();
$i = 0;
$count = count( $this->queries );
foreach ( $this->queries as $index => $query ) {
$this->clean_query( $query );
if ( is_wp_error( $query ) )
return self::$no_results;
extract( $query );
if ( 'IN' == $operator ) {
if ( empty( $terms ) ) {
if ( 'OR' == $this->relation ) {
if ( ( $index + 1 === $count ) && empty( $where ) )
return self::$no_results;
continue;
} else {
return self::$no_results;
}
}
$terms = implode( ',', $terms );
$alias = $i ? 'tt' . $i : $wpdb->term_relationships;
$join .= " INNER JOIN $wpdb->term_relationships";
$join .= $i ? " AS $alias" : '';
$join .= " ON ($primary_table.$primary_id_column = $alias.object_id)";
$where[] = "$alias.term_taxonomy_id $operator ($terms)";
} elseif ( 'NOT IN' == $operator ) {
if ( empty( $terms ) )
continue;
$terms = implode( ',', $terms );
$where[] = "$primary_table.$primary_id_column NOT IN (
SELECT object_id
FROM $wpdb->term_relationships
WHERE term_taxonomy_id IN ($terms)
)";
} elseif ( 'AND' == $operator ) {
if ( empty( $terms ) )
continue;
$num_terms = count( $terms );
$terms = implode( ',', $terms );
$where[] = "(
SELECT COUNT(1)
FROM $wpdb->term_relationships
WHERE term_taxonomy_id IN ($terms)
AND object_id = $primary_table.$primary_id_column
) = $num_terms";
}
$i++;
}
if ( ! empty( $where ) )
$where = ' AND ( ' . implode( " $this->relation ", $where ) . ' )';
else
$where = '';
return compact( 'join', 'where' );
}
/**
* Validates a single query.
*
* @since 3.2.0
* @access private
*
* @param array &$query The single query
*/
private function clean_query( &$query ) {
if ( ! taxonomy_exists( $query['taxonomy'] ) ) {
$query = new WP_Error( 'Invalid taxonomy' );
return;
}
$query['terms'] = array_unique( (array) $query['terms'] );
if ( is_taxonomy_hierarchical( $query['taxonomy'] ) && $query['include_children'] ) {
$this->transform_query( $query, 'term_id' );
if ( is_wp_error( $query ) )
return;
$children = array();
foreach ( $query['terms'] as $term ) {
$children = array_merge( $children, get_term_children( $term, $query['taxonomy'] ) );
$children[] = $term;
}
$query['terms'] = $children;
}
$this->transform_query( $query, 'term_taxonomy_id' );
}
/**
* Transforms a single query, from one field to another.
*
* @since 3.2.0
*
* @param array &$query The single query
* @param string $resulting_field The resulting field
*/
public function transform_query( &$query, $resulting_field ) {
global $wpdb;
if ( empty( $query['terms'] ) )
return;
if ( $query['field'] == $resulting_field )
return;
$resulting_field = sanitize_key( $resulting_field );
switch ( $query['field'] ) {
case 'slug':
case 'name':
$terms = "'" . implode( "','", array_map( 'sanitize_title_for_query', $query['terms'] ) ) . "'";
$terms = $wpdb->get_col( "
SELECT $wpdb->term_taxonomy.$resulting_field
FROM $wpdb->term_taxonomy
INNER JOIN $wpdb->terms USING (term_id)
WHERE taxonomy = '{$query['taxonomy']}'
AND $wpdb->terms.{$query['field']} IN ($terms)
" );
break;
case 'term_taxonomy_id':
$terms = implode( ',', array_map( 'intval', $query['terms'] ) );
$terms = $wpdb->get_col( "
SELECT $resulting_field
FROM $wpdb->term_taxonomy
WHERE term_taxonomy_id IN ($terms)
" );
break;
default:
$terms = implode( ',', array_map( 'intval', $query['terms'] ) );
$terms = $wpdb->get_col( "
SELECT $resulting_field
FROM $wpdb->term_taxonomy
WHERE taxonomy = '{$query['taxonomy']}'
AND term_id IN ($terms)
" );
}
if ( 'AND' == $query['operator'] && count( $terms ) < count( $query['terms'] ) ) {
$query = new WP_Error( 'Inexistent terms' );
return;
}
$query['terms'] = $terms;
$query['field'] = $resulting_field;
}
}
/**
* Get all Term data from database by Term ID.
*
* The usage of the get_term function is to apply filters to a term object. It
* is possible to get a term object from the database before applying the
* filters.
*
* $term ID must be part of $taxonomy, to get from the database. Failure, might
* be able to be captured by the hooks. Failure would be the same value as $wpdb
* returns for the get_row method.
*
* There are two hooks, one is specifically for each term, named 'get_term', and
* the second is for the taxonomy name, 'term_$taxonomy'. Both hooks gets the
* term object, and the taxonomy name as parameters. Both hooks are expected to
* return a Term object.
*
* 'get_term' hook - Takes two parameters the term Object and the taxonomy name.
* Must return term object. Used in get_term() as a catch-all filter for every
* $term.
*
* 'get_$taxonomy' hook - Takes two parameters the term Object and the taxonomy
* name. Must return term object. $taxonomy will be the taxonomy name, so for
* example, if 'category', it would be 'get_category' as the filter name. Useful
* for custom taxonomies or plugging into default taxonomies.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses sanitize_term() Cleanses the term based on $filter context before returning.
* @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param.
*
* @param int|object $term If integer, will get from database. If object will apply filters and return $term.
* @param string $taxonomy Taxonomy name that $term is part of.
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return mixed|null|WP_Error Term Row from database. Will return null if $term is empty. If taxonomy does not
* exist then WP_Error will be returned.
*/
function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') {
global $wpdb;
$null = null;
if ( empty($term) ) {
$error = new WP_Error('invalid_term', __('Empty Term'));
return $error;
}
if ( ! taxonomy_exists($taxonomy) ) {
$error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
return $error;
}
if ( is_object($term) && empty($term->filter) ) {
wp_cache_add($term->term_id, $term, $taxonomy);
$_term = $term;
} else {
if ( is_object($term) )
$term = $term->term_id;
if ( !$term = (int) $term )
return $null;
if ( ! $_term = wp_cache_get($term, $taxonomy) ) {
$_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND t.term_id = %d LIMIT 1", $taxonomy, $term) );
if ( ! $_term )
return $null;
wp_cache_add($term, $_term, $taxonomy);
}
}
$_term = apply_filters('get_term', $_term, $taxonomy);
$_term = apply_filters("get_$taxonomy", $_term, $taxonomy);
$_term = sanitize_term($_term, $taxonomy, $filter);
if ( $output == OBJECT ) {
return $_term;
} elseif ( $output == ARRAY_A ) {
$__term = get_object_vars($_term);
return $__term;
} elseif ( $output == ARRAY_N ) {
$__term = array_values(get_object_vars($_term));
return $__term;
} else {
return $_term;
}
}
/**
* Get all Term data from database by Term field and data.
*
* Warning: $value is not escaped for 'name' $field. You must do it yourself, if
* required.
*
* The default $field is 'id', therefore it is possible to also use null for
* field, but not recommended that you do so.
*
* If $value does not exist, the return value will be false. If $taxonomy exists
* and $field and $value combinations exist, the Term will be returned.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses sanitize_term() Cleanses the term based on $filter context before returning.
* @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param.
*
* @param string $field Either 'slug', 'name', or 'id'
* @param string|int $value Search for this term value
* @param string $taxonomy Taxonomy Name
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return mixed Term Row from database. Will return false if $taxonomy does not exist or $term was not found.
*/
function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw') {
global $wpdb;
if ( ! taxonomy_exists($taxonomy) )
return false;
if ( 'slug' == $field ) {
$field = 't.slug';
$value = sanitize_title($value);
if ( empty($value) )
return false;
} else if ( 'name' == $field ) {
// Assume already escaped
$value = wp_unslash($value);
$field = 't.name';
} else {
$term = get_term( (int) $value, $taxonomy, $output, $filter);
if ( is_wp_error( $term ) )
$term = false;
return $term;
}
$term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND $field = %s LIMIT 1", $taxonomy, $value) );
if ( !$term )
return false;
wp_cache_add($term->term_id, $term, $taxonomy);
$term = apply_filters('get_term', $term, $taxonomy);
$term = apply_filters("get_$taxonomy", $term, $taxonomy);
$term = sanitize_term($term, $taxonomy, $filter);
if ( $output == OBJECT ) {
return $term;
} elseif ( $output == ARRAY_A ) {
return get_object_vars($term);
} elseif ( $output == ARRAY_N ) {
return array_values(get_object_vars($term));
} else {
return $term;
}
}
/**
* Merge all term children into a single array of their IDs.
*
* This recursive function will merge all of the children of $term into the same
* array of term IDs. Only useful for taxonomies which are hierarchical.
*
* Will return an empty array if $term does not exist in $taxonomy.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses _get_term_hierarchy()
* @uses get_term_children() Used to get the children of both $taxonomy and the parent $term
*
* @param string $term_id ID of Term to get children
* @param string $taxonomy Taxonomy Name
* @return array|WP_Error List of Term Objects. WP_Error returned if $taxonomy does not exist
*/
function get_term_children( $term_id, $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
$term_id = intval( $term_id );
$terms = _get_term_hierarchy($taxonomy);
if ( ! isset($terms[$term_id]) )
return array();
$children = $terms[$term_id];
foreach ( (array) $terms[$term_id] as $child ) {
if ( isset($terms[$child]) )
$children = array_merge($children, get_term_children($child, $taxonomy));
}
return $children;
}
/**
* Get sanitized Term field.
*
* Does checks for $term, based on the $taxonomy. The function is for contextual
* reasons and for simplicity of usage. See sanitize_term_field() for more
* information.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses sanitize_term_field() Passes the return value in sanitize_term_field on success.
*
* @param string $field Term field to fetch
* @param int $term Term ID
* @param string $taxonomy Taxonomy Name
* @param string $context Optional, default is display. Look at sanitize_term_field() for available options.
* @return mixed Will return an empty string if $term is not an object or if $field is not set in $term.
*/
function get_term_field( $field, $term, $taxonomy, $context = 'display' ) {
$term = (int) $term;
$term = get_term( $term, $taxonomy );
if ( is_wp_error($term) )
return $term;
if ( !is_object($term) )
return '';
if ( !isset($term->$field) )
return '';
return sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context);
}
/**
* Sanitizes Term for editing.
*
* Return value is sanitize_term() and usage is for sanitizing the term for
* editing. Function is for contextual and simplicity.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses sanitize_term() Passes the return value on success
*
* @param int|object $id Term ID or Object
* @param string $taxonomy Taxonomy Name
* @return mixed|null|WP_Error Will return empty string if $term is not an object.
*/
function get_term_to_edit( $id, $taxonomy ) {
$term = get_term( $id, $taxonomy );
if ( is_wp_error($term) )
return $term;
if ( !is_object($term) )
return '';
return sanitize_term($term, $taxonomy, 'edit');
}
/**
* Retrieve the terms in a given taxonomy or list of taxonomies.
*
* You can fully inject any customizations to the query before it is sent, as
* well as control the output with a filter.
*
* The 'get_terms' filter will be called when the cache has the term and will
* pass the found term along with the array of $taxonomies and array of $args.
* This filter is also called before the array of terms is passed and will pass
* the array of terms, along with the $taxonomies and $args.
*
* The 'list_terms_exclusions' filter passes the compiled exclusions along with
* the $args.
*
* The 'get_terms_orderby' filter passes the ORDER BY clause for the query
* along with the $args array.
*
* The 'get_terms_fields' filter passes the fields for the SELECT query
* along with the $args array.
*
* The list of arguments that $args can contain, which will overwrite the defaults:
*
* orderby - Default is 'name'. Can be name, count, term_group, slug or nothing
* (will use term_id), Passing a custom value other than these will cause it to
* order based on the custom value.
*
* order - Default is ASC. Can use DESC.
*
* hide_empty - Default is true. Will not return empty terms, which means
* terms whose count is 0 according to the given taxonomy.
*
* exclude - Default is an empty array. An array, comma- or space-delimited string
* of term ids to exclude from the return array. If 'include' is non-empty,
* 'exclude' is ignored.
*
* exclude_tree - Default is an empty array. An array, comma- or space-delimited
* string of term ids to exclude from the return array, along with all of their
* descendant terms according to the primary taxonomy. If 'include' is non-empty,
* 'exclude_tree' is ignored.
*
* include - Default is an empty array. An array, comma- or space-delimited string
* of term ids to include in the return array.
*
* number - The maximum number of terms to return. Default is to return them all.
*
* offset - The number by which to offset the terms query.
*
* fields - Default is 'all', which returns an array of term objects.
* If 'fields' is 'ids' or 'names', returns an array of
* integers or strings, respectively.
*
* slug - Returns terms whose "slug" matches this value. Default is empty string.
*
* hierarchical - Whether to include terms that have non-empty descendants
* (even if 'hide_empty' is set to true).
*
* search - Returned terms' names will contain the value of 'search',
* case-insensitive. Default is an empty string.
*
* name__like - Returned terms' names will contain the value of 'name__like',
* case-insensitive. Default is empty string.
*
* description__like - Returned terms' descriptions will contain the value of
* 'description__like', case-insensitive. Default is empty string.
*
* The argument 'pad_counts', if set to true will include the quantity of a term's
* children in the quantity of each term's "count" object variable.
*
* The 'get' argument, if set to 'all' instead of its default empty string,
* returns terms regardless of ancestry or whether the terms are empty.
*
* The 'child_of' argument, when used, should be set to the integer of a term ID. Its default
* is 0. If set to a non-zero value, all returned terms will be descendants
* of that term according to the given taxonomy. Hence 'child_of' is set to 0
* if more than one taxonomy is passed in $taxonomies, because multiple taxonomies
* make term ancestry ambiguous.
*
* The 'parent' argument, when used, should be set to the integer of a term ID. Its default is
* the empty string '', which has a different meaning from the integer 0.
* If set to an integer value, all returned terms will have as an immediate
* ancestor the term whose ID is specified by that integer according to the given taxonomy.
* The 'parent' argument is different from 'child_of' in that a term X is considered a 'parent'
* of term Y only if term X is the father of term Y, not its grandfather or great-grandfather, etc.
*
* The 'cache_domain' argument enables a unique cache key to be produced when this query is stored
* in object cache. For instance, if you are using one of this function's filters to modify the
* query (such as 'terms_clauses'), setting 'cache_domain' to a unique value will not overwrite
* the cache for similar queries. Default value is 'core'.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses wp_parse_args() Merges the defaults with those defined by $args and allows for strings.
*
* @param string|array $taxonomies Taxonomy name or list of Taxonomy names
* @param string|array $args The values of what to search for when returning terms
* @return array|WP_Error List of Term Objects and their children. Will return WP_Error, if any of $taxonomies do not exist.
*/
function get_terms($taxonomies, $args = '') {
global $wpdb;
$empty_array = array();
$single_taxonomy = ! is_array( $taxonomies ) || 1 === count( $taxonomies );
if ( ! is_array( $taxonomies ) )
$taxonomies = array( $taxonomies );
foreach ( $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) ) {
$error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
return $error;
}
}
$defaults = array('orderby' => 'name', 'order' => 'ASC',
'hide_empty' => true, 'exclude' => array(), 'exclude_tree' => array(), 'include' => array(),
'number' => '', 'fields' => 'all', 'slug' => '', 'parent' => '',
'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', 'description__like' => '',
'pad_counts' => false, 'offset' => '', 'search' => '', 'cache_domain' => 'core' );
$args = wp_parse_args( $args, $defaults );
$args['number'] = absint( $args['number'] );
$args['offset'] = absint( $args['offset'] );
if ( !$single_taxonomy || !is_taxonomy_hierarchical($taxonomies[0]) ||
'' !== $args['parent'] ) {
$args['child_of'] = 0;
$args['hierarchical'] = false;
$args['pad_counts'] = false;
}
if ( 'all' == $args['get'] ) {
$args['child_of'] = 0;
$args['hide_empty'] = 0;
$args['hierarchical'] = false;
$args['pad_counts'] = false;
}
$args = apply_filters( 'get_terms_args', $args, $taxonomies );
extract($args, EXTR_SKIP);
if ( $child_of ) {
$hierarchy = _get_term_hierarchy( reset( $taxonomies ) );
if ( ! isset( $hierarchy[ $child_of ] ) )
return $empty_array;
}
if ( $parent ) {
$hierarchy = _get_term_hierarchy( reset( $taxonomies ) );
if ( ! isset( $hierarchy[ $parent ] ) )
return $empty_array;
}
// $args can be whatever, only use the args defined in defaults to compute the key
$filter_key = ( has_filter('list_terms_exclusions') ) ? serialize($GLOBALS['wp_filter']['list_terms_exclusions']) : '';
$key = md5( serialize( compact(array_keys($defaults)) ) . serialize( $taxonomies ) . $filter_key );
$last_changed = wp_cache_get( 'last_changed', 'terms' );
if ( ! $last_changed ) {
$last_changed = microtime();
wp_cache_set( 'last_changed', $last_changed, 'terms' );
}
$cache_key = "get_terms:$key:$last_changed";
$cache = wp_cache_get( $cache_key, 'terms' );
if ( false !== $cache ) {
$cache = apply_filters('get_terms', $cache, $taxonomies, $args);
return $cache;
}
$_orderby = strtolower($orderby);
if ( 'count' == $_orderby )
$orderby = 'tt.count';
else if ( 'name' == $_orderby )
$orderby = 't.name';
else if ( 'slug' == $_orderby )
$orderby = 't.slug';
else if ( 'term_group' == $_orderby )
$orderby = 't.term_group';
else if ( 'none' == $_orderby )
$orderby = '';
elseif ( empty($_orderby) || 'id' == $_orderby )
$orderby = 't.term_id';
else
$orderby = 't.name';
$orderby = apply_filters( 'get_terms_orderby', $orderby, $args, $taxonomies );
if ( !empty($orderby) )
$orderby = "ORDER BY $orderby";
else
$order = '';
$order = strtoupper( $order );
if ( '' !== $order && !in_array( $order, array( 'ASC', 'DESC' ) ) )
$order = 'ASC';
$where = "tt.taxonomy IN ('" . implode("', '", $taxonomies) . "')";
$inclusions = '';
if ( ! empty( $include ) ) {
$exclude = '';
$exclude_tree = '';
$inclusions = implode( ',', wp_parse_id_list( $include ) );
}
if ( ! empty( $inclusions ) )
$inclusions = ' AND t.term_id IN ( ' . $inclusions . ' )';
$where .= $inclusions;
$exclusions = '';
if ( ! empty( $exclude_tree ) ) {
$exclude_tree = wp_parse_id_list( $exclude_tree );
$excluded_children = array();
foreach ( $exclude_tree as $extrunk ) {
$excluded_children = array_merge(
$excluded_children,
(array) get_terms( $taxonomies[0], array( 'child_of' => intval( $extrunk ), 'fields' => 'ids', 'hide_empty' => 0 ) )
);
}
$exclusions = implode( ',', array_map( 'intval', $excluded_children ) );
}
if ( ! empty( $exclude ) ) {
$exterms = wp_parse_id_list( $exclude );
if ( empty( $exclusions ) )
$exclusions = implode( ',', $exterms );
else
$exclusions .= ', ' . implode( ',', $exterms );
}
if ( ! empty( $exclusions ) )
$exclusions = ' AND t.term_id NOT IN (' . $exclusions . ')';
$exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args );
$where .= $exclusions;
if ( !empty($slug) ) {
$slug = sanitize_title($slug);
$where .= " AND t.slug = '$slug'";
}
if ( !empty($name__like) ) {
$name__like = like_escape( $name__like );
$where .= $wpdb->prepare( " AND t.name LIKE %s", '%' . $name__like . '%' );
}
if ( ! empty( $description__like ) ) {
$description__like = like_escape( $description__like );
$where .= $wpdb->prepare( " AND tt.description LIKE %s", '%' . $description__like . '%' );
}
if ( '' !== $parent ) {
$parent = (int) $parent;
$where .= " AND tt.parent = '$parent'";
}
if ( $hide_empty && !$hierarchical )
$where .= ' AND tt.count > 0';
// don't limit the query results when we have to descend the family tree
if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) {
if ( $offset )
$limits = 'LIMIT ' . $offset . ',' . $number;
else
$limits = 'LIMIT ' . $number;
} else {
$limits = '';
}
if ( ! empty( $search ) ) {
$search = like_escape( $search );
$where .= $wpdb->prepare( ' AND ((t.name LIKE %s) OR (t.slug LIKE %s))', '%' . $search . '%', '%' . $search . '%' );
}
$selects = array();
switch ( $fields ) {
case 'all':
$selects = array( 't.*', 'tt.*' );
break;
case 'ids':
case 'id=>parent':
$selects = array( 't.term_id', 'tt.parent', 'tt.count' );
break;
case 'names':
$selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name' );
break;
case 'count':
$orderby = '';
$order = '';
$selects = array( 'COUNT(*)' );
break;
case 'id=>name':
$selects = array( 't.term_id', 't.name' );
break;
case 'id=>slug':
$selects = array( 't.term_id', 't.slug' );
break;
}
$_fields = $fields;
$fields = implode(', ', apply_filters( 'get_terms_fields', $selects, $args ));
$join = "INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
$pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' );
$clauses = apply_filters( 'terms_clauses', compact( $pieces ), $taxonomies, $args );
foreach ( $pieces as $piece )
$$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : '';
$query = "SELECT $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits";
$fields = $_fields;
if ( 'count' == $fields ) {
$term_count = $wpdb->get_var($query);
return $term_count;
}
$terms = $wpdb->get_results($query);
if ( 'all' == $fields ) {
update_term_cache($terms);
}
if ( empty($terms) ) {
wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS );
$terms = apply_filters('get_terms', array(), $taxonomies, $args);
return $terms;
}
if ( $child_of ) {
$children = _get_term_hierarchy( reset( $taxonomies ) );
if ( ! empty( $children ) )
$terms = _get_term_children( $child_of, $terms, reset( $taxonomies ) );
}
// Update term counts to include children.
if ( $pad_counts && 'all' == $fields )
_pad_term_counts( $terms, reset( $taxonomies ) );
// Make sure we show empty categories that have children.
if ( $hierarchical && $hide_empty && is_array( $terms ) ) {
foreach ( $terms as $k => $term ) {
if ( ! $term->count ) {
$children = _get_term_children( $term->term_id, $terms, reset( $taxonomies ) );
if ( is_array( $children ) )
foreach ( $children as $child )
if ( $child->count )
continue 2;
// It really is empty
unset($terms[$k]);
}
}
}
reset( $terms );
$_terms = array();
if ( 'id=>parent' == $fields ) {
while ( $term = array_shift( $terms ) )
$_terms[$term->term_id] = $term->parent;
} elseif ( 'ids' == $fields ) {
while ( $term = array_shift( $terms ) )
$_terms[] = $term->term_id;
} elseif ( 'names' == $fields ) {
while ( $term = array_shift( $terms ) )
$_terms[] = $term->name;
} elseif ( 'id=>name' == $fields ) {
while ( $term = array_shift( $terms ) )
$_terms[$term->term_id] = $term->name;
} elseif ( 'id=>slug' == $fields ) {
while ( $term = array_shift( $terms ) )
$_terms[$term->term_id] = $term->slug;
}
if ( ! empty( $_terms ) )
$terms = $_terms;
if ( $number && is_array( $terms ) && count( $terms ) > $number )
$terms = array_slice( $terms, $offset, $number );
wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS );
$terms = apply_filters( 'get_terms', $terms, $taxonomies, $args );
return $terms;
}
/**
* Check if Term exists.
*
* Formerly is_term(), introduced in 2.3.0.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.0.0
*
* @uses $wpdb
*
* @param int|string $term The term to check
* @param string $taxonomy The taxonomy name to use
* @param int $parent ID of parent term under which to confine the exists search.
* @return mixed Returns 0 if the term does not exist. Returns the term ID if no taxonomy is specified
* and the term ID exists. Returns an array of the term ID and the taxonomy if the pairing exists.
*/
function term_exists($term, $taxonomy = '', $parent = 0) {
global $wpdb;
$select = "SELECT term_id FROM $wpdb->terms as t WHERE ";
$tax_select = "SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE ";
if ( is_int($term) ) {
if ( 0 == $term )
return 0;
$where = 't.term_id = %d';
if ( !empty($taxonomy) )
return $wpdb->get_row( $wpdb->prepare( $tax_select . $where . " AND tt.taxonomy = %s", $term, $taxonomy ), ARRAY_A );
else
return $wpdb->get_var( $wpdb->prepare( $select . $where, $term ) );
}
$term = trim( wp_unslash( $term ) );
if ( '' === $slug = sanitize_title($term) )
return 0;
$where = 't.slug = %s';
$else_where = 't.name = %s';
$where_fields = array($slug);
$else_where_fields = array($term);
if ( !empty($taxonomy) ) {
$parent = (int) $parent;
if ( $parent > 0 ) {
$where_fields[] = $parent;
$else_where_fields[] = $parent;
$where .= ' AND tt.parent = %d';
$else_where .= ' AND tt.parent = %d';
}
$where_fields[] = $taxonomy;
$else_where_fields[] = $taxonomy;
if ( $result = $wpdb->get_row( $wpdb->prepare("SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE $where AND tt.taxonomy = %s", $where_fields), ARRAY_A) )
return $result;
return $wpdb->get_row( $wpdb->prepare("SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE $else_where AND tt.taxonomy = %s", $else_where_fields), ARRAY_A);
}
if ( $result = $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $where", $where_fields) ) )
return $result;
return $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $else_where", $else_where_fields) );
}
/**
* Check if a term is an ancestor of another term.
*
* You can use either an id or the term object for both parameters.
*
* @since 3.4.0
*
* @param int|object $term1 ID or object to check if this is the parent term.
* @param int|object $term2 The child term.
* @param string $taxonomy Taxonomy name that $term1 and $term2 belong to.
* @return bool Whether $term2 is child of $term1
*/
function term_is_ancestor_of( $term1, $term2, $taxonomy ) {
if ( ! isset( $term1->term_id ) )
$term1 = get_term( $term1, $taxonomy );
if ( ! isset( $term2->parent ) )
$term2 = get_term( $term2, $taxonomy );
if ( empty( $term1->term_id ) || empty( $term2->parent ) )
return false;
if ( $term2->parent == $term1->term_id )
return true;
return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy );
}
/**
* Sanitize Term all fields.
*
* Relies on sanitize_term_field() to sanitize the term. The difference is that
* this function will sanitize all fields. The context is based
* on sanitize_term_field().
*
* The $term is expected to be either an array or an object.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses sanitize_term_field Used to sanitize all fields in a term
*
* @param array|object $term The term to check
* @param string $taxonomy The taxonomy name to use
* @param string $context Default is 'display'.
* @return array|object Term with all fields sanitized
*/
function sanitize_term($term, $taxonomy, $context = 'display') {
if ( 'raw' == $context )
return $term;
$fields = array('term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group');
$do_object = false;
if ( is_object($term) )
$do_object = true;
$term_id = $do_object ? $term->term_id : (isset($term['term_id']) ? $term['term_id'] : 0);
foreach ( (array) $fields as $field ) {
if ( $do_object ) {
if ( isset($term->$field) )
$term->$field = sanitize_term_field($field, $term->$field, $term_id, $taxonomy, $context);
} else {
if ( isset($term[$field]) )
$term[$field] = sanitize_term_field($field, $term[$field], $term_id, $taxonomy, $context);
}
}
if ( $do_object )
$term->filter = $context;
else
$term['filter'] = $context;
return $term;
}
/**
* Cleanse the field value in the term based on the context.
*
* Passing a term field value through the function should be assumed to have
* cleansed the value for whatever context the term field is going to be used.
*
* If no context or an unsupported context is given, then default filters will
* be applied.
*
* There are enough filters for each context to support a custom filtering
* without creating your own filter function. Simply create a function that
* hooks into the filter you need.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
*
* @param string $field Term field to sanitize
* @param string $value Search for this term value
* @param int $term_id Term ID
* @param string $taxonomy Taxonomy Name
* @param string $context Either edit, db, display, attribute, or js.
* @return mixed sanitized field
*/
function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) {
if ( 'parent' == $field || 'term_id' == $field || 'count' == $field || 'term_group' == $field ) {
$value = (int) $value;
if ( $value < 0 )
$value = 0;
}
if ( 'raw' == $context )
return $value;
if ( 'edit' == $context ) {
$value = apply_filters("edit_term_{$field}", $value, $term_id, $taxonomy);
$value = apply_filters("edit_{$taxonomy}_{$field}", $value, $term_id);
if ( 'description' == $field )
$value = esc_html($value); // textarea_escaped
else
$value = esc_attr($value);
} else if ( 'db' == $context ) {
$value = apply_filters("pre_term_{$field}", $value, $taxonomy);
$value = apply_filters("pre_{$taxonomy}_{$field}", $value);
// Back compat filters
if ( 'slug' == $field )
$value = apply_filters('pre_category_nicename', $value);
} else if ( 'rss' == $context ) {
$value = apply_filters("term_{$field}_rss", $value, $taxonomy);
$value = apply_filters("{$taxonomy}_{$field}_rss", $value);
} else {
// Use display filters by default.
$value = apply_filters("term_{$field}", $value, $term_id, $taxonomy, $context);
$value = apply_filters("{$taxonomy}_{$field}", $value, $term_id, $context);
}
if ( 'attribute' == $context )
$value = esc_attr($value);
else if ( 'js' == $context )
$value = esc_js($value);
return $value;
}
/**
* Count how many terms are in Taxonomy.
*
* Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true).
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses get_terms()
* @uses wp_parse_args() Turns strings into arrays and merges defaults into an array.
*
* @param string $taxonomy Taxonomy name
* @param array|string $args Overwrite defaults. See get_terms()
* @return int|WP_Error How many terms are in $taxonomy. WP_Error if $taxonomy does not exist.
*/
function wp_count_terms( $taxonomy, $args = array() ) {
$defaults = array('hide_empty' => false);
$args = wp_parse_args($args, $defaults);
// backwards compatibility
if ( isset($args['ignore_empty']) ) {
$args['hide_empty'] = $args['ignore_empty'];
unset($args['ignore_empty']);
}
$args['fields'] = 'count';
return get_terms($taxonomy, $args);
}
/**
* Will unlink the object from the taxonomy or taxonomies.
*
* Will remove all relationships between the object and any terms in
* a particular taxonomy or taxonomies. Does not remove the term or
* taxonomy itself.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses wp_remove_object_terms()
*
* @param int $object_id The term Object Id that refers to the term
* @param string|array $taxonomies List of Taxonomy Names or single Taxonomy name.
*/
function wp_delete_object_term_relationships( $object_id, $taxonomies ) {
$object_id = (int) $object_id;
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
foreach ( (array) $taxonomies as $taxonomy ) {
$term_ids = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids' ) );
$term_ids = array_map( 'intval', $term_ids );
wp_remove_object_terms( $object_id, $term_ids, $taxonomy );
}
}
/**
* Removes a term from the database.
*
* If the term is a parent of other terms, then the children will be updated to
* that term's parent.
*
* The $args 'default' will only override the terms found, if there is only one
* term found. Any other and the found terms are used.
*
* The $args 'force_default' will force the term supplied as default to be
* assigned even if the object was not going to be termless
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses do_action() Calls both 'delete_term' and 'delete_$taxonomy' action
* hooks, passing term ID, term taxonomy ID, and deleted term object. 'delete_term'
* also gets taxonomy as the third parameter.
*
* @param int $term Term ID
* @param string $taxonomy Taxonomy Name
* @param array|string $args Optional. Change 'default' term id and override found term ids.
* @return bool|WP_Error Returns false if not term; true if completes delete action.
*/
function wp_delete_term( $term, $taxonomy, $args = array() ) {
global $wpdb;
$term = (int) $term;
if ( ! $ids = term_exists($term, $taxonomy) )
return false;
if ( is_wp_error( $ids ) )
return $ids;
$tt_id = $ids['term_taxonomy_id'];
$defaults = array();
if ( 'category' == $taxonomy ) {
$defaults['default'] = get_option( 'default_category' );
if ( $defaults['default'] == $term )
return 0; // Don't delete the default category
}
$args = wp_parse_args($args, $defaults);
extract($args, EXTR_SKIP);
if ( isset( $default ) ) {
$default = (int) $default;
if ( ! term_exists($default, $taxonomy) )
unset($default);
}
// Update children to point to new parent
if ( is_taxonomy_hierarchical($taxonomy) ) {
$term_obj = get_term($term, $taxonomy);
if ( is_wp_error( $term_obj ) )
return $term_obj;
$parent = $term_obj->parent;
$edit_tt_ids = $wpdb->get_col( "SELECT `term_taxonomy_id` FROM $wpdb->term_taxonomy WHERE `parent` = " . (int)$term_obj->term_id );
do_action( 'edit_term_taxonomies', $edit_tt_ids );
$wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) );
do_action( 'edited_term_taxonomies', $edit_tt_ids );
}
$objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) );
foreach ( (array) $objects as $object ) {
$terms = wp_get_object_terms($object, $taxonomy, array('fields' => 'ids', 'orderby' => 'none'));
if ( 1 == count($terms) && isset($default) ) {
$terms = array($default);
} else {
$terms = array_diff($terms, array($term));
if (isset($default) && isset($force_default) && $force_default)
$terms = array_merge($terms, array($default));
}
$terms = array_map('intval', $terms);
wp_set_object_terms($object, $terms, $taxonomy);
}
// Clean the relationship caches for all object types using this term
$tax_object = get_taxonomy( $taxonomy );
foreach ( $tax_object->object_type as $object_type )
clean_object_term_cache( $objects, $object_type );
// Get the object before deletion so we can pass to actions below
$deleted_term = get_term( $term, $taxonomy );
do_action( 'delete_term_taxonomy', $tt_id );
$wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) );
do_action( 'deleted_term_taxonomy', $tt_id );
// Delete the term if no taxonomies use it.
if ( !$wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term) ) )
$wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) );
clean_term_cache($term, $taxonomy);
do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term );
do_action( "delete_$taxonomy", $term, $tt_id, $deleted_term );
return true;
}
/**
* Deletes one existing category.
*
* @since 2.0.0
* @uses wp_delete_term()
*
* @param int $cat_ID
* @return mixed Returns true if completes delete action; false if term doesn't exist;
* Zero on attempted deletion of default Category; WP_Error object is also a possibility.
*/
function wp_delete_category( $cat_ID ) {
return wp_delete_term( $cat_ID, 'category' );
}
/**
* Retrieves the terms associated with the given object(s), in the supplied taxonomies.
*
* The following information has to do the $args parameter and for what can be
* contained in the string or array of that parameter, if it exists.
*
* The first argument is called, 'orderby' and has the default value of 'name'.
* The other value that is supported is 'count'.
*
* The second argument is called, 'order' and has the default value of 'ASC'.
* The only other value that will be acceptable is 'DESC'.
*
* The final argument supported is called, 'fields' and has the default value of
* 'all'. There are multiple other options that can be used instead. Supported
* values are as follows: 'all', 'ids', 'names', and finally
* 'all_with_object_id'.
*
* The fields argument also decides what will be returned. If 'all' or
* 'all_with_object_id' is chosen or the default kept intact, then all matching
* terms objects will be returned. If either 'ids' or 'names' is used, then an
* array of all matching term ids or term names will be returned respectively.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses $wpdb
*
* @param int|array $object_ids The ID(s) of the object(s) to retrieve.
* @param string|array $taxonomies The taxonomies to retrieve terms from.
* @param array|string $args Change what is returned
* @return array|WP_Error The requested term data or empty array if no terms found. WP_Error if any of the $taxonomies don't exist.
*/
function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
global $wpdb;
if ( empty( $object_ids ) || empty( $taxonomies ) )
return array();
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
}
if ( !is_array($object_ids) )
$object_ids = array($object_ids);
$object_ids = array_map('intval', $object_ids);
$defaults = array('orderby' => 'name', 'order' => 'ASC', 'fields' => 'all');
$args = wp_parse_args( $args, $defaults );
$terms = array();
if ( count($taxonomies) > 1 ) {
foreach ( $taxonomies as $index => $taxonomy ) {
$t = get_taxonomy($taxonomy);
if ( isset($t->args) && is_array($t->args) && $args != array_merge($args, $t->args) ) {
unset($taxonomies[$index]);
$terms = array_merge($terms, wp_get_object_terms($object_ids, $taxonomy, array_merge($args, $t->args)));
}
}
} else {
$t = get_taxonomy($taxonomies[0]);
if ( isset($t->args) && is_array($t->args) )
$args = array_merge($args, $t->args);
}
extract($args, EXTR_SKIP);
if ( 'count' == $orderby )
$orderby = 'tt.count';
else if ( 'name' == $orderby )
$orderby = 't.name';
else if ( 'slug' == $orderby )
$orderby = 't.slug';
else if ( 'term_group' == $orderby )
$orderby = 't.term_group';
else if ( 'term_order' == $orderby )
$orderby = 'tr.term_order';
else if ( 'none' == $orderby ) {
$orderby = '';
$order = '';
} else {
$orderby = 't.term_id';
}
// tt_ids queries can only be none or tr.term_taxonomy_id
if ( ('tt_ids' == $fields) && !empty($orderby) )
$orderby = 'tr.term_taxonomy_id';
if ( !empty($orderby) )
$orderby = "ORDER BY $orderby";
$order = strtoupper( $order );
if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) )
$order = 'ASC';
$taxonomies = "'" . implode("', '", $taxonomies) . "'";
$object_ids = implode(', ', $object_ids);
$select_this = '';
if ( 'all' == $fields )
$select_this = 't.*, tt.*';
else if ( 'ids' == $fields )
$select_this = 't.term_id';
else if ( 'names' == $fields )
$select_this = 't.name';
else if ( 'slugs' == $fields )
$select_this = 't.slug';
else if ( 'all_with_object_id' == $fields )
$select_this = 't.*, tt.*, tr.object_id';
$query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN $wpdb->term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tr.object_id IN ($object_ids) $orderby $order";
if ( 'all' == $fields || 'all_with_object_id' == $fields ) {
$terms = array_merge($terms, $wpdb->get_results($query));
update_term_cache($terms);
} else if ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) {
$terms = array_merge($terms, $wpdb->get_col($query));
} else if ( 'tt_ids' == $fields ) {
$terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order");
}
if ( ! $terms )
$terms = array();
return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args);
}
/**
* Adds a new term to the database. Optionally marks it as an alias of an existing term.
*
* Error handling is assigned for the nonexistence of the $taxonomy and $term
* parameters before inserting. If both the term id and taxonomy exist
* previously, then an array will be returned that contains the term id and the
* contents of what is returned. The keys of the array are 'term_id' and
* 'term_taxonomy_id' containing numeric values.
*
* It is assumed that the term does not yet exist or the above will apply. The
* term will be first added to the term table and then related to the taxonomy
* if everything is well. If everything is correct, then several actions will be
* run prior to a filter and then several actions will be run after the filter
* is run.
*
* The arguments decide how the term is handled based on the $args parameter.
* The following is a list of the available overrides and the defaults.
*
* 'alias_of'. There is no default, but if added, expected is the slug that the
* term will be an alias of. Expected to be a string.
*
* 'description'. There is no default. If exists, will be added to the database
* along with the term. Expected to be a string.
*
* 'parent'. Expected to be numeric and default is 0 (zero). Will assign value
* of 'parent' to the term.
*
* 'slug'. Expected to be a string. There is no default.
*
* If 'slug' argument exists then the slug will be checked to see if it is not
* a valid term. If that check succeeds (it is not a valid term), then it is
* added and the term id is given. If it fails, then a check is made to whether
* the taxonomy is hierarchical and the parent argument is not empty. If the
* second check succeeds, the term will be inserted and the term id will be
* given.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses $wpdb
*
* @uses apply_filters() Calls 'pre_insert_term' hook with term and taxonomy as parameters.
* @uses do_action() Calls 'create_term' hook with the term id and taxonomy id as parameters.
* @uses do_action() Calls 'create_$taxonomy' hook with term id and taxonomy id as parameters.
* @uses apply_filters() Calls 'term_id_filter' hook with term id and taxonomy id as parameters.
* @uses do_action() Calls 'created_term' hook with the term id and taxonomy id as parameters.
* @uses do_action() Calls 'created_$taxonomy' hook with term id and taxonomy id as parameters.
*
* @param string $term The term to add or update.
* @param string $taxonomy The taxonomy to which to add the term
* @param array|string $args Change the values of the inserted term
* @return array|WP_Error The Term ID and Term Taxonomy ID
*/
function wp_insert_term( $term, $taxonomy, $args = array() ) {
global $wpdb;
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
$term = apply_filters( 'pre_insert_term', $term, $taxonomy );
if ( is_wp_error( $term ) )
return $term;
if ( is_int($term) && 0 == $term )
return new WP_Error('invalid_term_id', __('Invalid term ID'));
if ( '' == trim($term) )
return new WP_Error('empty_term_name', __('A name is required for this term'));
$defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => '');
$args = wp_parse_args($args, $defaults);
$args['name'] = $term;
$args['taxonomy'] = $taxonomy;
$args = sanitize_term($args, $taxonomy, 'db');
extract($args, EXTR_SKIP);
// expected_slashed ($name)
$name = wp_unslash($name);
$description = wp_unslash($description);
if ( empty($slug) )
$slug = sanitize_title($name);
$term_group = 0;
if ( $alias_of ) {
$alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) );
if ( $alias->term_group ) {
// The alias we want is already in a group, so let's use that one.
$term_group = $alias->term_group;
} else {
// The alias isn't in a group, so let's create a new one and firstly add the alias term to it.
$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;
do_action( 'edit_terms', $alias->term_id, $taxonomy );
$wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) );
do_action( 'edited_terms', $alias->term_id, $taxonomy );
}
}
if ( $term_id = term_exists($slug) ) {
$existing_term = $wpdb->get_row( $wpdb->prepare( "SELECT name FROM $wpdb->terms WHERE term_id = %d", $term_id), ARRAY_A );
// We've got an existing term in the same taxonomy, which matches the name of the new term:
if ( is_taxonomy_hierarchical($taxonomy) && $existing_term['name'] == $name && $exists = term_exists( (int) $term_id, $taxonomy ) ) {
// Hierarchical, and it matches an existing term, Do not allow same "name" in the same level.
$siblings = get_terms($taxonomy, array('fields' => 'names', 'get' => 'all', 'parent' => (int)$parent) );
if ( in_array($name, $siblings) ) {
return new WP_Error('term_exists', __('A term with the name provided already exists with this parent.'), $exists['term_id']);
} else {
$slug = wp_unique_term_slug($slug, (object) $args);
if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) )
return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
$term_id = (int) $wpdb->insert_id;
}
} elseif ( $existing_term['name'] != $name ) {
// We've got an existing term, with a different name, Create the new term.
$slug = wp_unique_term_slug($slug, (object) $args);
if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) )
return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
$term_id = (int) $wpdb->insert_id;
} elseif ( $exists = term_exists( (int) $term_id, $taxonomy ) ) {
// Same name, same slug.
return new WP_Error('term_exists', __('A term with the name provided already exists.'), $exists['term_id']);
}
} else {
// This term does not exist at all in the database, Create it.
$slug = wp_unique_term_slug($slug, (object) $args);
if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) )
return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
$term_id = (int) $wpdb->insert_id;
}
// Seems unreachable, However, Is used in the case that a term name is provided, which sanitizes to an empty string.
if ( empty($slug) ) {
$slug = sanitize_title($slug, $term_id);
do_action( 'edit_terms', $term_id, $taxonomy );
$wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
do_action( 'edited_terms', $term_id, $taxonomy );
}
$tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) );
if ( !empty($tt_id) )
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
$wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent') + array( 'count' => 0 ) );
$tt_id = (int) $wpdb->insert_id;
do_action("create_term", $term_id, $tt_id, $taxonomy);
do_action("create_$taxonomy", $term_id, $tt_id);
$term_id = apply_filters('term_id_filter', $term_id, $tt_id);
clean_term_cache($term_id, $taxonomy);
do_action("created_term", $term_id, $tt_id, $taxonomy);
do_action("created_$taxonomy", $term_id, $tt_id);
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
/**
* Create Term and Taxonomy Relationships.
*
* Relates an object (post, link etc) to a term and taxonomy type. Creates the
* term and taxonomy relationship if it doesn't already exist. Creates a term if
* it doesn't exist (using the slug).
*
* A relationship means that the term is grouped in or belongs to the taxonomy.
* A term has no meaning until it is given context by defining which taxonomy it
* exists under.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses wp_remove_object_terms()
*
* @param int $object_id The object to relate to.
* @param array|int|string $terms The slug or id of the term, will replace all existing
* related terms in this taxonomy.
* @param array|string $taxonomy The context in which to relate the term to the object.
* @param bool $append If false will delete difference of terms.
* @return array|WP_Error Affected Term IDs
*/
function wp_set_object_terms($object_id, $terms, $taxonomy, $append = false) {
global $wpdb;
$object_id = (int) $object_id;
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
if ( !is_array($terms) )
$terms = array($terms);
if ( ! $append )
$old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none'));
else
$old_tt_ids = array();
$tt_ids = array();
$term_ids = array();
$new_tt_ids = array();
foreach ( (array) $terms as $term) {
if ( !strlen(trim($term)) )
continue;
if ( !$term_info = term_exists($term, $taxonomy) ) {
// Skip if a non-existent term ID is passed.
if ( is_int($term) )
continue;
$term_info = wp_insert_term($term, $taxonomy);
}
if ( is_wp_error($term_info) )
return $term_info;
$term_ids[] = $term_info['term_id'];
$tt_id = $term_info['term_taxonomy_id'];
$tt_ids[] = $tt_id;
if ( $wpdb->get_var( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $object_id, $tt_id ) ) )
continue;
do_action( 'add_term_relationship', $object_id, $tt_id );
$wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) );
do_action( 'added_term_relationship', $object_id, $tt_id );
$new_tt_ids[] = $tt_id;
}
if ( $new_tt_ids )
wp_update_term_count( $new_tt_ids, $taxonomy );
if ( ! $append ) {
$delete_tt_ids = array_diff( $old_tt_ids, $tt_ids );
if ( $delete_tt_ids ) {
$in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'";
$delete_term_ids = $wpdb->get_col( $wpdb->prepare( "SELECT tt.term_id FROM $wpdb->term_taxonomy AS tt WHERE tt.taxonomy = %s AND tt.term_taxonomy_id IN ($in_delete_tt_ids)", $taxonomy ) );
$delete_term_ids = array_map( 'intval', $delete_term_ids );
$remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy );
if ( is_wp_error( $remove ) ) {
return $remove;
}
}
}
$t = get_taxonomy($taxonomy);
if ( ! $append && isset($t->sort) && $t->sort ) {
$values = array();
$term_order = 0;
$final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids'));
foreach ( $tt_ids as $tt_id )
if ( in_array($tt_id, $final_tt_ids) )
$values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tt_id, ++$term_order);
if ( $values )
if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join( ',', $values ) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)" ) )
return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database' ), $wpdb->last_error );
}
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
do_action('set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids);
return $tt_ids;
}
/**
* Add term(s) associated with a given object.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.6
* @uses wp_set_object_terms()
*
* @param int $object_id The ID of the object to which the terms will be added.
* @param array|int|string $terms The slug(s) or ID(s) of the term(s) to add.
* @param array|string $taxonomy Taxonomy name.
* @return array|WP_Error Affected Term IDs
*/
function wp_add_object_terms( $object_id, $terms, $taxonomy ) {
return wp_set_object_terms( $object_id, $terms, $taxonomy, true );
}
/**
* Remove term(s) associated with a given object.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.6
* @uses $wpdb
*
* @uses apply_filters() Calls 'delete_term_relationships' hook with object_id and tt_ids as parameters.
* @uses apply_filters() Calls 'deleted_term_relationships' hook with object_id and tt_ids as parameters.
*
* @param int $object_id The ID of the object from which the terms will be removed.
* @param array|int|string $terms The slug(s) or ID(s) of the term(s) to remove.
* @param array|string $taxonomy Taxonomy name.
* @return bool|WP_Error True on success, false or WP_Error on failure.
*/
function wp_remove_object_terms( $object_id, $terms, $taxonomy ) {
global $wpdb;
$object_id = (int) $object_id;
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid Taxonomy' ) );
}
if ( ! is_array( $terms ) ) {
$terms = array( $terms );
}
$tt_ids = array();
foreach ( (array) $terms as $term ) {
if ( ! strlen( trim( $term ) ) ) {
continue;
}
if ( ! $term_info = term_exists( $term, $taxonomy ) ) {
// Skip if a non-existent term ID is passed.
if ( is_int( $term ) ) {
continue;
}
}
if ( is_wp_error( $term_info ) ) {
return $term_info;
}
$tt_ids[] = $term_info['term_taxonomy_id'];
}
if ( $tt_ids ) {
$in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'";
do_action( 'delete_term_relationships', $object_id, $tt_ids );
$deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) );
do_action( 'deleted_term_relationships', $object_id, $tt_ids );
wp_update_term_count( $tt_ids, $taxonomy );
return (bool) $deleted;
}
return false;
}
/**
* Will make slug unique, if it isn't already.
*
* The $slug has to be unique global to every taxonomy, meaning that one
* taxonomy term can't have a matching slug with another taxonomy term. Each
* slug has to be globally unique for every taxonomy.
*
* The way this works is that if the taxonomy that the term belongs to is
* hierarchical and has a parent, it will append that parent to the $slug.
*
* If that still doesn't return an unique slug, then it try to append a number
* until it finds a number that is truly unique.
*
* The only purpose for $term is for appending a parent, if one exists.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses $wpdb
*
* @param string $slug The string that will be tried for a unique slug
* @param object $term The term object that the $slug will belong too
* @return string Will return a true unique slug.
*/
function wp_unique_term_slug($slug, $term) {
global $wpdb;
if ( ! term_exists( $slug ) )
return $slug;
// If the taxonomy supports hierarchy and the term has a parent, make the slug unique
// by incorporating parent slugs.
if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) {
$the_parent = $term->parent;
while ( ! empty($the_parent) ) {
$parent_term = get_term($the_parent, $term->taxonomy);
if ( is_wp_error($parent_term) || empty($parent_term) )
break;
$slug .= '-' . $parent_term->slug;
if ( ! term_exists( $slug ) )
return $slug;
if ( empty($parent_term->parent) )
break;
$the_parent = $parent_term->parent;
}
}
// If we didn't get a unique slug, try appending a number to make it unique.
if ( ! empty( $term->term_id ) )
$query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id );
else
$query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug );
if ( $wpdb->get_var( $query ) ) {
$num = 2;
do {
$alt_slug = $slug . "-$num";
$num++;
$slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) );
} while ( $slug_check );
$slug = $alt_slug;
}
return $slug;
}
/**
* Update term based on arguments provided.
*
* The $args will indiscriminately override all values with the same field name.
* Care must be taken to not override important information need to update or
* update will fail (or perhaps create a new term, neither would be acceptable).
*
* Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not
* defined in $args already.
*
* 'alias_of' will create a term group, if it doesn't already exist, and update
* it for the $term.
*
* If the 'slug' argument in $args is missing, then the 'name' in $args will be
* used. It should also be noted that if you set 'slug' and it isn't unique then
* a WP_Error will be passed back. If you don't pass any slug, then a unique one
* will be created for you.
*
* For what can be overrode in $args, check the term scheme can contain and stay
* away from the term keys.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses $wpdb
* @uses do_action() Will call both 'edit_term' and 'edit_$taxonomy' twice.
* @uses apply_filters() Will call the 'term_id_filter' filter and pass the term
* id and taxonomy id.
*
* @param int $term_id The ID of the term
* @param string $taxonomy The context in which to relate the term to the object.
* @param array|string $args Overwrite term field values
* @return array|WP_Error Returns Term ID and Taxonomy Term ID
*/
function wp_update_term( $term_id, $taxonomy, $args = array() ) {
global $wpdb;
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
$term_id = (int) $term_id;
// First, get all of the original args
$term = get_term ($term_id, $taxonomy, ARRAY_A);
if ( is_wp_error( $term ) )
return $term;
// Escape data pulled from DB.
$term = wp_slash($term);
// Merge old and new args with new args overwriting old ones.
$args = array_merge($term, $args);
$defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => '');
$args = wp_parse_args($args, $defaults);
$args = sanitize_term($args, $taxonomy, 'db');
extract($args, EXTR_SKIP);
// expected_slashed ($name)
$name = wp_unslash($name);
$description = wp_unslash($description);
if ( '' == trim($name) )
return new WP_Error('empty_term_name', __('A name is required for this term'));
$empty_slug = false;
if ( empty($slug) ) {
$empty_slug = true;
$slug = sanitize_title($name);
}
if ( $alias_of ) {
$alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) );
if ( $alias->term_group ) {
// The alias we want is already in a group, so let's use that one.
$term_group = $alias->term_group;
} else {
// The alias isn't in a group, so let's create a new one and firstly add the alias term to it.
$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;
do_action( 'edit_terms', $alias->term_id, $taxonomy );
$wpdb->update( $wpdb->terms, compact('term_group'), array( 'term_id' => $alias->term_id ) );
do_action( 'edited_terms', $alias->term_id, $taxonomy );
}
}
// Check $parent to see if it will cause a hierarchy loop
$parent = apply_filters( 'wp_update_term_parent', $parent, $term_id, $taxonomy, compact( array_keys( $args ) ), $args );
// Check for duplicate slug
$id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE slug = %s", $slug ) );
if ( $id && ($id != $term_id) ) {
// If an empty slug was passed or the parent changed, reset the slug to something unique.
// Otherwise, bail.
if ( $empty_slug || ( $parent != $term['parent']) )
$slug = wp_unique_term_slug($slug, (object) $args);
else
return new WP_Error('duplicate_term_slug', sprintf(__('The slug “%s” is already in use by another term'), $slug));
}
do_action( 'edit_terms', $term_id, $taxonomy );
$wpdb->update($wpdb->terms, compact( 'name', 'slug', 'term_group' ), compact( 'term_id' ) );
if ( empty($slug) ) {
$slug = sanitize_title($name, $term_id);
$wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
}
do_action( 'edited_terms', $term_id, $taxonomy );
$tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id) );
do_action( 'edit_term_taxonomy', $tt_id, $taxonomy );
$wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) );
do_action( 'edited_term_taxonomy', $tt_id, $taxonomy );
do_action("edit_term", $term_id, $tt_id, $taxonomy);
do_action("edit_$taxonomy", $term_id, $tt_id);
$term_id = apply_filters('term_id_filter', $term_id, $tt_id);
clean_term_cache($term_id, $taxonomy);
do_action("edited_term", $term_id, $tt_id, $taxonomy);
do_action("edited_$taxonomy", $term_id, $tt_id);
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
/**
* Enable or disable term counting.
*
* @since 2.5.0
*
* @param bool $defer Optional. Enable if true, disable if false.
* @return bool Whether term counting is enabled or disabled.
*/
function wp_defer_term_counting($defer=null) {
static $_defer = false;
if ( is_bool($defer) ) {
$_defer = $defer;
// flush any deferred counts
if ( !$defer )
wp_update_term_count( null, null, true );
}
return $_defer;
}
/**
* Updates the amount of terms in taxonomy.
*
* If there is a taxonomy callback applied, then it will be called for updating
* the count.
*
* The default action is to count what the amount of terms have the relationship
* of term ID. Once that is done, then update the database.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses $wpdb
*
* @param int|array $terms The term_taxonomy_id of the terms
* @param string $taxonomy The context of the term.
* @return bool If no terms will return false, and if successful will return true.
*/
function wp_update_term_count( $terms, $taxonomy, $do_deferred=false ) {
static $_deferred = array();
if ( $do_deferred ) {
foreach ( (array) array_keys($_deferred) as $tax ) {
wp_update_term_count_now( $_deferred[$tax], $tax );
unset( $_deferred[$tax] );
}
}
if ( empty($terms) )
return false;
if ( !is_array($terms) )
$terms = array($terms);
if ( wp_defer_term_counting() ) {
if ( !isset($_deferred[$taxonomy]) )
$_deferred[$taxonomy] = array();
$_deferred[$taxonomy] = array_unique( array_merge($_deferred[$taxonomy], $terms) );
return true;
}
return wp_update_term_count_now( $terms, $taxonomy );
}
/**
* Perform term count update immediately.
*
* @since 2.5.0
*
* @param array $terms The term_taxonomy_id of terms to update.
* @param string $taxonomy The context of the term.
* @return bool Always true when complete.
*/
function wp_update_term_count_now( $terms, $taxonomy ) {
global $wpdb;
$terms = array_map('intval', $terms);
$taxonomy = get_taxonomy($taxonomy);
if ( !empty($taxonomy->update_count_callback) ) {
call_user_func($taxonomy->update_count_callback, $terms, $taxonomy);
} else {
$object_types = (array) $taxonomy->object_type;
foreach ( $object_types as &$object_type ) {
if ( 0 === strpos( $object_type, 'attachment:' ) )
list( $object_type ) = explode( ':', $object_type );
}
if ( $object_types == array_filter( $object_types, 'post_type_exists' ) ) {
// Only post types are attached to this taxonomy
_update_post_term_count( $terms, $taxonomy );
} else {
// Default count updater
_update_generic_term_count( $terms, $taxonomy );
}
}
clean_term_cache($terms, '', false);
return true;
}
//
// Cache
//
/**
* Removes the taxonomy relationship to terms from the cache.
*
* Will remove the entire taxonomy relationship containing term $object_id. The
* term IDs have to exist within the taxonomy $object_type for the deletion to
* take place.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @see get_object_taxonomies() for more on $object_type
* @uses do_action() Will call action hook named, 'clean_object_term_cache' after completion.
* Passes, function params in same order.
*
* @param int|array $object_ids Single or list of term object ID(s)
* @param array|string $object_type The taxonomy object type
*/
function clean_object_term_cache($object_ids, $object_type) {
if ( !is_array($object_ids) )
$object_ids = array($object_ids);
$taxonomies = get_object_taxonomies( $object_type );
foreach ( $object_ids as $id )
foreach ( $taxonomies as $taxonomy )
wp_cache_delete($id, "{$taxonomy}_relationships");
do_action('clean_object_term_cache', $object_ids, $object_type);
}
/**
* Will remove all of the term ids from the cache.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses $wpdb
*
* @param int|array $ids Single or list of Term IDs
* @param string $taxonomy Can be empty and will assume tt_ids, else will use for context.
* @param bool $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true.
*/
function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
global $wpdb;
static $cleaned = array();
if ( !is_array($ids) )
$ids = array($ids);
$taxonomies = array();
// If no taxonomy, assume tt_ids.
if ( empty($taxonomy) ) {
$tt_ids = array_map('intval', $ids);
$tt_ids = implode(', ', $tt_ids);
$terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)");
$ids = array();
foreach ( (array) $terms as $term ) {
$taxonomies[] = $term->taxonomy;
$ids[] = $term->term_id;
wp_cache_delete($term->term_id, $term->taxonomy);
}
$taxonomies = array_unique($taxonomies);
} else {
$taxonomies = array($taxonomy);
foreach ( $taxonomies as $taxonomy ) {
foreach ( $ids as $id ) {
wp_cache_delete($id, $taxonomy);
}
}
}
foreach ( $taxonomies as $taxonomy ) {
if ( isset($cleaned[$taxonomy]) )
continue;
$cleaned[$taxonomy] = true;
if ( $clean_taxonomy ) {
wp_cache_delete('all_ids', $taxonomy);
wp_cache_delete('get', $taxonomy);
delete_option("{$taxonomy}_children");
// Regenerate {$taxonomy}_children
_get_term_hierarchy($taxonomy);
}
do_action('clean_term_cache', $ids, $taxonomy);
}
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
/**
* Retrieves the taxonomy relationship to the term object id.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @uses wp_cache_get() Retrieves taxonomy relationship from cache
*
* @param int|array $id Term object ID
* @param string $taxonomy Taxonomy Name
* @return bool|array Empty array if $terms found, but not $taxonomy. False if nothing is in cache for $taxonomy and $id.
*/
function get_object_term_cache($id, $taxonomy) {
$cache = wp_cache_get($id, "{$taxonomy}_relationships");
return $cache;
}
/**
* Updates the cache for Term ID(s).
*
* Will only update the cache for terms not already cached.
*
* The $object_ids expects that the ids be separated by commas, if it is a
* string.
*
* It should be noted that update_object_term_cache() is very time extensive. It
* is advised that the function is not called very often or at least not for a
* lot of terms that exist in a lot of taxonomies. The amount of time increases
* for each term and it also increases for each taxonomy the term belongs to.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
* @uses wp_get_object_terms() Used to get terms from the database to update
*
* @param string|array $object_ids Single or list of term object ID(s)
* @param array|string $object_type The taxonomy object type
* @return null|bool Null value is given with empty $object_ids. False if
*/
function update_object_term_cache($object_ids, $object_type) {
if ( empty($object_ids) )
return;
if ( !is_array($object_ids) )
$object_ids = explode(',', $object_ids);
$object_ids = array_map('intval', $object_ids);
$taxonomies = get_object_taxonomies($object_type);
$ids = array();
foreach ( (array) $object_ids as $id ) {
foreach ( $taxonomies as $taxonomy ) {
if ( false === wp_cache_get($id, "{$taxonomy}_relationships") ) {
$ids[] = $id;
break;
}
}
}
if ( empty( $ids ) )
return false;
$terms = wp_get_object_terms($ids, $taxonomies, array('fields' => 'all_with_object_id'));
$object_terms = array();
foreach ( (array) $terms as $term )
$object_terms[$term->object_id][$term->taxonomy][$term->term_id] = $term;
foreach ( $ids as $id ) {
foreach ( $taxonomies as $taxonomy ) {
if ( ! isset($object_terms[$id][$taxonomy]) ) {
if ( !isset($object_terms[$id]) )
$object_terms[$id] = array();
$object_terms[$id][$taxonomy] = array();
}
}
}
foreach ( $object_terms as $id => $value ) {
foreach ( $value as $taxonomy => $terms ) {
wp_cache_add( $id, $terms, "{$taxonomy}_relationships" );
}
}
}
/**
* Updates Terms to Taxonomy in cache.
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*
* @param array $terms List of Term objects to change
* @param string $taxonomy Optional. Update Term to this taxonomy in cache
*/
function update_term_cache($terms, $taxonomy = '') {
foreach ( (array) $terms as $term ) {
$term_taxonomy = $taxonomy;
if ( empty($term_taxonomy) )
$term_taxonomy = $term->taxonomy;
wp_cache_add($term->term_id, $term, $term_taxonomy);
}
}
//
// Private
//
/**
* Retrieves children of taxonomy as Term IDs.
*
* @package WordPress
* @subpackage Taxonomy
* @access private
* @since 2.3.0
*
* @uses update_option() Stores all of the children in "$taxonomy_children"
* option. That is the name of the taxonomy, immediately followed by '_children'.
*
* @param string $taxonomy Taxonomy Name
* @return array Empty if $taxonomy isn't hierarchical or returns children as Term IDs.
*/
function _get_term_hierarchy($taxonomy) {
if ( !is_taxonomy_hierarchical($taxonomy) )
return array();
$children = get_option("{$taxonomy}_children");
if ( is_array($children) )
return $children;
$children = array();
$terms = get_terms($taxonomy, array('get' => 'all', 'orderby' => 'id', 'fields' => 'id=>parent'));
foreach ( $terms as $term_id => $parent ) {
if ( $parent > 0 )
$children[$parent][] = $term_id;
}
update_option("{$taxonomy}_children", $children);
return $children;
}
/**
* Get the subset of $terms that are descendants of $term_id.
*
* If $terms is an array of objects, then _get_term_children returns an array of objects.
* If $terms is an array of IDs, then _get_term_children returns an array of IDs.
*
* @package WordPress
* @subpackage Taxonomy
* @access private
* @since 2.3.0
*
* @param int $term_id The ancestor term: all returned terms should be descendants of $term_id.
* @param array $terms The set of terms---either an array of term objects or term IDs---from which those that are descendants of $term_id will be chosen.
* @param string $taxonomy The taxonomy which determines the hierarchy of the terms.
* @return array The subset of $terms that are descendants of $term_id.
*/
function _get_term_children($term_id, $terms, $taxonomy) {
$empty_array = array();
if ( empty($terms) )
return $empty_array;
$term_list = array();
$has_children = _get_term_hierarchy($taxonomy);
if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) )
return $empty_array;
foreach ( (array) $terms as $term ) {
$use_id = false;
if ( !is_object($term) ) {
$term = get_term($term, $taxonomy);
if ( is_wp_error( $term ) )
return $term;
$use_id = true;
}
if ( $term->term_id == $term_id )
continue;
if ( $term->parent == $term_id ) {
if ( $use_id )
$term_list[] = $term->term_id;
else
$term_list[] = $term;
if ( !isset($has_children[$term->term_id]) )
continue;
if ( $children = _get_term_children($term->term_id, $terms, $taxonomy) )
$term_list = array_merge($term_list, $children);
}
}
return $term_list;
}
/**
* Add count of children to parent count.
*
* Recalculates term counts by including items from child terms. Assumes all
* relevant children are already in the $terms argument.
*
* @package WordPress
* @subpackage Taxonomy
* @access private
* @since 2.3.0
* @uses $wpdb
*
* @param array $terms List of Term IDs
* @param string $taxonomy Term Context
* @return null Will break from function if conditions are not met.
*/
function _pad_term_counts(&$terms, $taxonomy) {
global $wpdb;
// This function only works for hierarchical taxonomies like post categories.
if ( !is_taxonomy_hierarchical( $taxonomy ) )
return;
$term_hier = _get_term_hierarchy($taxonomy);
if ( empty($term_hier) )
return;
$term_items = array();
foreach ( (array) $terms as $key => $term ) {
$terms_by_id[$term->term_id] = & $terms[$key];
$term_ids[$term->term_taxonomy_id] = $term->term_id;
}
// Get the object and term ids and stick them in a lookup table
$tax_obj = get_taxonomy($taxonomy);
$object_types = esc_sql($tax_obj->object_type);
$results = $wpdb->get_results("SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (" . implode(',', array_keys($term_ids)) . ") AND post_type IN ('" . implode("', '", $object_types) . "') AND post_status = 'publish'");
foreach ( $results as $row ) {
$id = $term_ids[$row->term_taxonomy_id];
$term_items[$id][$row->object_id] = isset($term_items[$id][$row->object_id]) ? ++$term_items[$id][$row->object_id] : 1;
}
// Touch every ancestor's lookup row for each post in each term
foreach ( $term_ids as $term_id ) {
$child = $term_id;
while ( !empty( $terms_by_id[$child] ) && $parent = $terms_by_id[$child]->parent ) {
if ( !empty( $term_items[$term_id] ) )
foreach ( $term_items[$term_id] as $item_id => $touches ) {
$term_items[$parent][$item_id] = isset($term_items[$parent][$item_id]) ? ++$term_items[$parent][$item_id]: 1;
}
$child = $parent;
}
}
// Transfer the touched cells
foreach ( (array) $term_items as $id => $items )
if ( isset($terms_by_id[$id]) )
$terms_by_id[$id]->count = count($items);
}
//
// Default callbacks
//
/**
* Will update term count based on object types of the current taxonomy.
*
* Private function for the default callback for post_tag and category
* taxonomies.
*
* @package WordPress
* @subpackage Taxonomy
* @access private
* @since 2.3.0
* @uses $wpdb
*
* @param array $terms List of Term taxonomy IDs
* @param object $taxonomy Current taxonomy object of terms
*/
function _update_post_term_count( $terms, $taxonomy ) {
global $wpdb;
$object_types = (array) $taxonomy->object_type;
foreach ( $object_types as &$object_type )
list( $object_type ) = explode( ':', $object_type );
$object_types = array_unique( $object_types );
if ( false !== ( $check_attachments = array_search( 'attachment', $object_types ) ) ) {
unset( $object_types[ $check_attachments ] );
$check_attachments = true;
}
if ( $object_types )
$object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) );
foreach ( (array) $terms as $term ) {
$count = 0;
// Attachments can be 'inherit' status, we need to base count off the parent's status if so
if ( $check_attachments )
$count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts p1 WHERE p1.ID = $wpdb->term_relationships.object_id AND ( post_status = 'publish' OR ( post_status = 'inherit' AND post_parent > 0 AND ( SELECT post_status FROM $wpdb->posts WHERE ID = p1.post_parent ) = 'publish' ) ) AND post_type = 'attachment' AND term_taxonomy_id = %d", $term ) );
if ( $object_types )
$count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts WHERE $wpdb->posts.ID = $wpdb->term_relationships.object_id AND post_status = 'publish' AND post_type IN ('" . implode("', '", $object_types ) . "') AND term_taxonomy_id = %d", $term ) );
do_action( 'edit_term_taxonomy', $term, $taxonomy );
$wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) );
do_action( 'edited_term_taxonomy', $term, $taxonomy );
}
}
/**
* Will update term count based on number of objects.
*
* Default callback for the link_category taxonomy.
*
* @package WordPress
* @subpackage Taxonomy
* @since 3.3.0
* @uses $wpdb
*
* @param array $terms List of Term taxonomy IDs
* @param object $taxonomy Current taxonomy object of terms
*/
function _update_generic_term_count( $terms, $taxonomy ) {
global $wpdb;
foreach ( (array) $terms as $term ) {
$count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) );
do_action( 'edit_term_taxonomy', $term, $taxonomy );
$wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) );
do_action( 'edited_term_taxonomy', $term, $taxonomy );
}
}
/**
* Generates a permalink for a taxonomy term archive.
*
* @since 2.5.0
*
* @uses apply_filters() Calls 'term_link' with term link and term object, and taxonomy parameters.
* @uses apply_filters() For the post_tag Taxonomy, Calls 'tag_link' with tag link and tag ID as parameters.
* @uses apply_filters() For the category Taxonomy, Calls 'category_link' filter on category link and category ID.
*
* @param object|int|string $term
* @param string $taxonomy (optional if $term is object)
* @return string|WP_Error HTML link to taxonomy term archive on success, WP_Error if term does not exist.
*/
function get_term_link( $term, $taxonomy = '') {
global $wp_rewrite;
if ( !is_object($term) ) {
if ( is_int($term) ) {
$term = get_term($term, $taxonomy);
} else {
$term = get_term_by('slug', $term, $taxonomy);
}
}
if ( !is_object($term) )
$term = new WP_Error('invalid_term', __('Empty Term'));
if ( is_wp_error( $term ) )
return $term;
$taxonomy = $term->taxonomy;
$termlink = $wp_rewrite->get_extra_permastruct($taxonomy);
$slug = $term->slug;
$t = get_taxonomy($taxonomy);
if ( empty($termlink) ) {
if ( 'category' == $taxonomy )
$termlink = '?cat=' . $term->term_id;
elseif ( $t->query_var )
$termlink = "?$t->query_var=$slug";
else
$termlink = "?taxonomy=$taxonomy&term=$slug";
$termlink = home_url($termlink);
} else {
if ( $t->rewrite['hierarchical'] ) {
$hierarchical_slugs = array();
$ancestors = get_ancestors($term->term_id, $taxonomy);
foreach ( (array)$ancestors as $ancestor ) {
$ancestor_term = get_term($ancestor, $taxonomy);
$hierarchical_slugs[] = $ancestor_term->slug;
}
$hierarchical_slugs = array_reverse($hierarchical_slugs);
$hierarchical_slugs[] = $slug;
$termlink = str_replace("%$taxonomy%", implode('/', $hierarchical_slugs), $termlink);
} else {
$termlink = str_replace("%$taxonomy%", $slug, $termlink);
}
$termlink = home_url( user_trailingslashit($termlink, 'category') );
}
// Back Compat filters.
if ( 'post_tag' == $taxonomy )
$termlink = apply_filters( 'tag_link', $termlink, $term->term_id );
elseif ( 'category' == $taxonomy )
$termlink = apply_filters( 'category_link', $termlink, $term->term_id );
return apply_filters('term_link', $termlink, $term, $taxonomy);
}
/**
* Display the taxonomies of a post with available options.
*
* This function can be used within the loop to display the taxonomies for a
* post without specifying the Post ID. You can also use it outside the Loop to
* display the taxonomies for a specific post.
*
* The available defaults are:
* 'post' : default is 0. The post ID to get taxonomies of.
* 'before' : default is empty string. Display before taxonomies list.
* 'sep' : default is empty string. Separate every taxonomy with value in this.
* 'after' : default is empty string. Display this after the taxonomies list.
* 'template' : The template to use for displaying the taxonomy terms.
*
* @since 2.5.0
* @uses get_the_taxonomies()
*
* @param array $args Override the defaults.
*/
function the_taxonomies($args = array()) {
$defaults = array(
'post' => 0,
'before' => '',
'sep' => ' ',
'after' => '',
'template' => '%s: %l.'
);
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
echo $before . join($sep, get_the_taxonomies($post, $r)) . $after;
}
/**
* Retrieve all taxonomies associated with a post.
*
* This function can be used within the loop. It will also return an array of
* the taxonomies with links to the taxonomy and name.
*
* @since 2.5.0
*
* @param int $post Optional. Post ID or will use Global Post ID (in loop).
* @param array $args Override the defaults.
* @return array
*/
function get_the_taxonomies($post = 0, $args = array() ) {
$post = get_post( $post );
$args = wp_parse_args( $args, array(
'template' => '%s: %l.',
) );
extract( $args, EXTR_SKIP );
$taxonomies = array();
if ( !$post )
return $taxonomies;
foreach ( get_object_taxonomies($post) as $taxonomy ) {
$t = (array) get_taxonomy($taxonomy);
if ( empty($t['label']) )
$t['label'] = $taxonomy;
if ( empty($t['args']) )
$t['args'] = array();
if ( empty($t['template']) )
$t['template'] = $template;
$terms = get_object_term_cache($post->ID, $taxonomy);
if ( false === $terms )
$terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);
$links = array();
foreach ( $terms as $term )
$links[] = "$term->name";
if ( $links )
$taxonomies[$taxonomy] = wp_sprintf($t['template'], $t['label'], $links, $terms);
}
return $taxonomies;
}
/**
* Retrieve all taxonomies of a post with just the names.
*
* @since 2.5.0
* @uses get_object_taxonomies()
*
* @param int $post Optional. Post ID
* @return array
*/
function get_post_taxonomies($post = 0) {
$post = get_post( $post );
return get_object_taxonomies($post);
}
/**
* Determine if the given object is associated with any of the given terms.
*
* The given terms are checked against the object's terms' term_ids, names and slugs.
* Terms given as integers will only be checked against the object's terms' term_ids.
* If no terms are given, determines if object is associated with any terms in the given taxonomy.
*
* @since 2.7.0
* @uses get_object_term_cache()
* @uses wp_get_object_terms()
*
* @param int $object_id ID of the object (post ID, link ID, ...)
* @param string $taxonomy Single taxonomy name
* @param int|string|array $terms Optional. Term term_id, name, slug or array of said
* @return bool|WP_Error. WP_Error on input error.
*/
function is_object_in_term( $object_id, $taxonomy, $terms = null ) {
if ( !$object_id = (int) $object_id )
return new WP_Error( 'invalid_object', __( 'Invalid object ID' ) );
$object_terms = get_object_term_cache( $object_id, $taxonomy );
if ( false === $object_terms )
$object_terms = wp_get_object_terms( $object_id, $taxonomy );
if ( is_wp_error( $object_terms ) )
return $object_terms;
if ( empty( $object_terms ) )
return false;
if ( empty( $terms ) )
return ( !empty( $object_terms ) );
$terms = (array) $terms;
if ( $ints = array_filter( $terms, 'is_int' ) )
$strs = array_diff( $terms, $ints );
else
$strs =& $terms;
foreach ( $object_terms as $object_term ) {
if ( $ints && in_array( $object_term->term_id, $ints ) ) return true; // If int, check against term_id
if ( $strs ) {
if ( in_array( $object_term->term_id, $strs ) ) return true;
if ( in_array( $object_term->name, $strs ) ) return true;
if ( in_array( $object_term->slug, $strs ) ) return true;
}
}
return false;
}
/**
* Determine if the given object type is associated with the given taxonomy.
*
* @since 3.0.0
* @uses get_object_taxonomies()
*
* @param string $object_type Object type string
* @param string $taxonomy Single taxonomy name
* @return bool True if object is associated with the taxonomy, otherwise false.
*/
function is_object_in_taxonomy($object_type, $taxonomy) {
$taxonomies = get_object_taxonomies($object_type);
if ( empty($taxonomies) )
return false;
if ( in_array($taxonomy, $taxonomies) )
return true;
return false;
}
/**
* Get an array of ancestor IDs for a given object.
*
* @param int $object_id The ID of the object
* @param string $object_type The type of object for which we'll be retrieving ancestors.
* @return array of ancestors from lowest to highest in the hierarchy.
*/
function get_ancestors($object_id = 0, $object_type = '') {
$object_id = (int) $object_id;
$ancestors = array();
if ( empty( $object_id ) ) {
return apply_filters('get_ancestors', $ancestors, $object_id, $object_type);
}
if ( is_taxonomy_hierarchical( $object_type ) ) {
$term = get_term($object_id, $object_type);
while ( ! is_wp_error($term) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors ) ) {
$ancestors[] = (int) $term->parent;
$term = get_term($term->parent, $object_type);
}
} elseif ( post_type_exists( $object_type ) ) {
$ancestors = get_post_ancestors($object_id);
}
return apply_filters('get_ancestors', $ancestors, $object_id, $object_type);
}
/**
* Returns the term's parent's term_ID
*
* @since 3.1.0
*
* @param int $term_id
* @param string $taxonomy
*
* @return int|bool false on error
*/
function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) {
$term = get_term( $term_id, $taxonomy );
if ( !$term || is_wp_error( $term ) )
return false;
return (int) $term->parent;
}
/**
* Checks the given subset of the term hierarchy for hierarchy loops.
* Prevents loops from forming and breaks those that it finds.
*
* Attached to the wp_update_term_parent filter.
*
* @since 3.1.0
* @uses wp_find_hierarchy_loop()
*
* @param int $parent term_id of the parent for the term we're checking.
* @param int $term_id The term we're checking.
* @param string $taxonomy The taxonomy of the term we're checking.
*
* @return int The new parent for the term.
*/
function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) {
// Nothing fancy here - bail
if ( !$parent )
return 0;
// Can't be its own parent
if ( $parent == $term_id )
return 0;
// Now look for larger loops
if ( !$loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent, array( $taxonomy ) ) )
return $parent; // No loop
// Setting $parent to the given value causes a loop
if ( isset( $loop[$term_id] ) )
return 0;
// There's a loop, but it doesn't contain $term_id. Break the loop.
foreach ( array_keys( $loop ) as $loop_member )
wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) );
return $parent;
}