1540 lines
54 KiB
PHP
1540 lines
54 KiB
PHP
<?php
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/**
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* Taxonomy API: Core category-specific template tags
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*
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* @package WordPress
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* @subpackage Template
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* @since 1.2.0
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*/
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/**
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* Retrieves category link URL.
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*
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* @since 1.0.0
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*
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* @see get_term_link()
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*
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* @param int|object $category Category ID or object.
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* @return string Link on success, empty string if category does not exist.
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*/
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function get_category_link( $category ) {
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if ( ! is_object( $category ) ) {
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$category = (int) $category;
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}
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$category = get_term_link( $category );
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if ( is_wp_error( $category ) ) {
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return '';
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}
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return $category;
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}
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/**
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* Retrieves category parents with separator.
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*
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* @since 1.2.0
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* @since 4.8.0 The `$visited` parameter was deprecated and renamed to `$deprecated`.
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*
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* @param int $category_id Category ID.
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* @param bool $link Optional. Whether to format with link. Default false.
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* @param string $separator Optional. How to separate categories. Default '/'.
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* @param bool $nicename Optional. Whether to use nice name for display. Default false.
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* @param array $deprecated Not used.
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* @return string|WP_Error A list of category parents on success, WP_Error on failure.
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*/
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function get_category_parents( $category_id, $link = false, $separator = '/', $nicename = false, $deprecated = array() ) {
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if ( ! empty( $deprecated ) ) {
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_deprecated_argument( __FUNCTION__, '4.8.0' );
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}
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$format = $nicename ? 'slug' : 'name';
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$args = array(
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'separator' => $separator,
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'link' => $link,
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'format' => $format,
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);
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return get_term_parents_list( $category_id, 'category', $args );
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}
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/**
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* Retrieves post categories.
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*
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* This tag may be used outside The Loop by passing a post ID as the parameter.
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*
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* Note: This function only returns results from the default "category" taxonomy.
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* For custom taxonomies use get_the_terms().
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*
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* @since 0.71
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*
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* @param int $post_id Optional. The post ID. Defaults to current post ID.
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* @return WP_Term[] Array of WP_Term objects, one for each category assigned to the post.
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*/
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function get_the_category( $post_id = false ) {
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$categories = get_the_terms( $post_id, 'category' );
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if ( ! $categories || is_wp_error( $categories ) ) {
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$categories = array();
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}
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$categories = array_values( $categories );
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foreach ( array_keys( $categories ) as $key ) {
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_make_cat_compat( $categories[ $key ] );
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}
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/**
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* Filters the array of categories to return for a post.
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*
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* @since 3.1.0
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* @since 4.4.0 Added `$post_id` parameter.
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*
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* @param WP_Term[] $categories An array of categories to return for the post.
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* @param int|false $post_id ID of the post.
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*/
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return apply_filters( 'get_the_categories', $categories, $post_id );
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}
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/**
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* Retrieves category name based on category ID.
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*
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* @since 0.71
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*
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* @param int $cat_ID Category ID.
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* @return string|WP_Error Category name on success, WP_Error on failure.
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*/
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function get_the_category_by_ID( $cat_ID ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
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$cat_ID = (int) $cat_ID;
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$category = get_term( $cat_ID );
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if ( is_wp_error( $category ) ) {
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return $category;
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}
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return ( $category ) ? $category->name : '';
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}
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/**
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* Retrieves category list for a post in either HTML list or custom format.
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*
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* Generally used for quick, delimited (e.g. comma-separated) lists of categories,
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* as part of a post entry meta.
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*
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* For a more powerful, list-based function, see wp_list_categories().
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*
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* @since 1.5.1
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*
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* @see wp_list_categories()
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*
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* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
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*
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* @param string $separator Optional. Separator between the categories. By default, the links are placed
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* in an unordered list. An empty string will result in the default behavior.
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* @param string $parents Optional. How to display the parents.
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* @param int $post_id Optional. Post ID to retrieve categories.
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* @return string Category list for a post.
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*/
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function get_the_category_list( $separator = '', $parents = '', $post_id = false ) {
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global $wp_rewrite;
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if ( ! is_object_in_taxonomy( get_post_type( $post_id ), 'category' ) ) {
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/** This filter is documented in wp-includes/category-template.php */
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return apply_filters( 'the_category', '', $separator, $parents );
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}
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/**
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* Filters the categories before building the category list.
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*
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* @since 4.4.0
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*
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* @param WP_Term[] $categories An array of the post's categories.
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* @param int|bool $post_id ID of the post we're retrieving categories for.
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* When `false`, we assume the current post in the loop.
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*/
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$categories = apply_filters( 'the_category_list', get_the_category( $post_id ), $post_id );
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if ( empty( $categories ) ) {
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/** This filter is documented in wp-includes/category-template.php */
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return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents );
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}
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$rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
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$thelist = '';
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if ( '' === $separator ) {
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$thelist .= '<ul class="post-categories">';
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foreach ( $categories as $category ) {
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$thelist .= "\n\t<li>";
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switch ( strtolower( $parents ) ) {
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case 'multiple':
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if ( $category->parent ) {
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$thelist .= get_category_parents( $category->parent, true, $separator );
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}
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name . '</a></li>';
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break;
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case 'single':
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
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if ( $category->parent ) {
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$thelist .= get_category_parents( $category->parent, false, $separator );
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}
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$thelist .= $category->name . '</a></li>';
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break;
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case '':
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default:
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name . '</a></li>';
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}
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}
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$thelist .= '</ul>';
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} else {
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$i = 0;
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foreach ( $categories as $category ) {
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if ( 0 < $i ) {
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$thelist .= $separator;
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}
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switch ( strtolower( $parents ) ) {
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case 'multiple':
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if ( $category->parent ) {
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$thelist .= get_category_parents( $category->parent, true, $separator );
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}
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name . '</a>';
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break;
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case 'single':
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
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if ( $category->parent ) {
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$thelist .= get_category_parents( $category->parent, false, $separator );
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}
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$thelist .= "$category->name</a>";
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break;
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case '':
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default:
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name . '</a>';
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}
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++$i;
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}
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}
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/**
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* Filters the category or list of categories.
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*
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* @since 1.2.0
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*
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* @param string $thelist List of categories for the current post.
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* @param string $separator Separator used between the categories.
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* @param string $parents How to display the category parents. Accepts 'multiple',
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* 'single', or empty.
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*/
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return apply_filters( 'the_category', $thelist, $separator, $parents );
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}
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/**
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* Checks if the current post is within any of the given categories.
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*
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* The given categories are checked against the post's categories' term_ids, names and slugs.
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* Categories given as integers will only be checked against the post's categories' term_ids.
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*
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* Prior to v2.5 of WordPress, category names were not supported.
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* Prior to v2.7, category slugs were not supported.
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* Prior to v2.7, only one category could be compared: in_category( $single_category ).
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* Prior to v2.7, this function could only be used in the WordPress Loop.
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* As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
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*
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* For more information on this and similar theme functions, check out
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* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
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* Conditional Tags} article in the Theme Developer Handbook.
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*
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* @since 1.2.0
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* @since 2.7.0 The `$post` parameter was added.
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*
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* @param int|string|int[]|string[] $category Category ID, name, slug, or array of such
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* to check against.
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* @param int|object $post Optional. Post to check instead of the current post.
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* @return bool True if the current post is in any of the given categories.
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*/
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function in_category( $category, $post = null ) {
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if ( empty( $category ) ) {
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return false;
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}
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return has_category( $category, $post );
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}
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/**
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* Displays category list for a post in either HTML list or custom format.
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*
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* @since 0.71
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*
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* @param string $separator Optional. Separator between the categories. By default, the links are placed
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* in an unordered list. An empty string will result in the default behavior.
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* @param string $parents Optional. How to display the parents.
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* @param int $post_id Optional. Post ID to retrieve categories.
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*/
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function the_category( $separator = '', $parents = '', $post_id = false ) {
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echo get_the_category_list( $separator, $parents, $post_id );
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}
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/**
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* Retrieves category description.
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*
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* @since 1.0.0
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*
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* @param int $category Optional. Category ID. Defaults to the current category ID.
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* @return string Category description, if available.
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*/
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function category_description( $category = 0 ) {
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return term_description( $category );
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}
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/**
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* Displays or retrieves the HTML dropdown list of categories.
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*
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* The 'hierarchical' argument, which is disabled by default, will override the
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* depth argument, unless it is true. When the argument is false, it will
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* display all of the categories. When it is enabled it will use the value in
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* the 'depth' argument.
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*
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* @since 2.1.0
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* @since 4.2.0 Introduced the `value_field` argument.
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* @since 4.6.0 Introduced the `required` argument.
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*
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* @param array|string $args {
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* Optional. Array or string of arguments to generate a categories drop-down element. See WP_Term_Query::__construct()
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* for information on additional accepted arguments.
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*
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* @type string $show_option_all Text to display for showing all categories. Default empty.
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* @type string $show_option_none Text to display for showing no categories. Default empty.
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* @type string $option_none_value Value to use when no category is selected. Default empty.
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* @type string $orderby Which column to use for ordering categories. See get_terms() for a list
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* of accepted values. Default 'id' (term_id).
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* @type bool $pad_counts See get_terms() for an argument description. Default false.
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* @type bool|int $show_count Whether to include post counts. Accepts 0, 1, or their bool equivalents.
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* Default 0.
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* @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, or their
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* bool equivalents. Default 1.
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* @type bool|int $hierarchical Whether to traverse the taxonomy hierarchy. Accepts 0, 1, or their bool
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* equivalents. Default 0.
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* @type int $depth Maximum depth. Default 0.
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* @type int $tab_index Tab index for the select element. Default 0 (no tabindex).
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* @type string $name Value for the 'name' attribute of the select element. Default 'cat'.
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* @type string $id Value for the 'id' attribute of the select element. Defaults to the value
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* of `$name`.
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* @type string $class Value for the 'class' attribute of the select element. Default 'postform'.
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* @type int|string $selected Value of the option that should be selected. Default 0.
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* @type string $value_field Term field that should be used to populate the 'value' attribute
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* of the option elements. Accepts any valid term field: 'term_id', 'name',
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* 'slug', 'term_group', 'term_taxonomy_id', 'taxonomy', 'description',
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* 'parent', 'count'. Default 'term_id'.
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* @type string|array $taxonomy Name of the taxonomy or taxonomies to retrieve. Default 'category'.
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* @type bool $hide_if_empty True to skip generating markup if no categories are found.
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* Default false (create select element even if no categories are found).
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* @type bool $required Whether the `<select>` element should have the HTML5 'required' attribute.
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* Default false.
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* }
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* @return string HTML dropdown list of categories.
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*/
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function wp_dropdown_categories( $args = '' ) {
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$defaults = array(
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'show_option_all' => '',
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'show_option_none' => '',
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'orderby' => 'id',
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'order' => 'ASC',
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'show_count' => 0,
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'hide_empty' => 1,
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'child_of' => 0,
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'exclude' => '',
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'echo' => 1,
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'selected' => 0,
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'hierarchical' => 0,
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'name' => 'cat',
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'id' => '',
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'class' => 'postform',
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'depth' => 0,
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'tab_index' => 0,
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'taxonomy' => 'category',
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'hide_if_empty' => false,
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'option_none_value' => -1,
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'value_field' => 'term_id',
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'required' => false,
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);
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$defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;
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// Back compat.
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if ( isset( $args['type'] ) && 'link' === $args['type'] ) {
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_deprecated_argument(
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__FUNCTION__,
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'3.0.0',
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sprintf(
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/* translators: 1: "type => link", 2: "taxonomy => link_category" */
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__( '%1$s is deprecated. Use %2$s instead.' ),
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'<code>type => link</code>',
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'<code>taxonomy => link_category</code>'
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)
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);
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$args['taxonomy'] = 'link_category';
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}
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// Parse incoming $args into an array and merge it with $defaults.
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$parsed_args = wp_parse_args( $args, $defaults );
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$option_none_value = $parsed_args['option_none_value'];
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if ( ! isset( $parsed_args['pad_counts'] ) && $parsed_args['show_count'] && $parsed_args['hierarchical'] ) {
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$parsed_args['pad_counts'] = true;
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}
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$tab_index = $parsed_args['tab_index'];
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$tab_index_attribute = '';
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if ( (int) $tab_index > 0 ) {
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$tab_index_attribute = " tabindex=\"$tab_index\"";
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}
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// Avoid clashes with the 'name' param of get_terms().
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$get_terms_args = $parsed_args;
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unset( $get_terms_args['name'] );
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$categories = get_terms( $get_terms_args );
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$name = esc_attr( $parsed_args['name'] );
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$class = esc_attr( $parsed_args['class'] );
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$id = $parsed_args['id'] ? esc_attr( $parsed_args['id'] ) : $name;
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$required = $parsed_args['required'] ? 'required' : '';
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if ( ! $parsed_args['hide_if_empty'] || ! empty( $categories ) ) {
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$output = "<select $required name='$name' id='$id' class='$class' $tab_index_attribute>\n";
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} else {
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$output = '';
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}
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if ( empty( $categories ) && ! $parsed_args['hide_if_empty'] && ! empty( $parsed_args['show_option_none'] ) ) {
|
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|
|
/**
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* Filters a taxonomy drop-down display element.
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*
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* A variety of taxonomy drop-down display elements can be modified
|
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* just prior to display via this filter. Filterable arguments include
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* 'show_option_none', 'show_option_all', and various forms of the
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* term name.
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*
|
|
* @since 1.2.0
|
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*
|
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* @see wp_dropdown_categories()
|
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*
|
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* @param string $element Category name.
|
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* @param WP_Term|null $category The category object, or null if there's no corresponding category.
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*/
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$show_option_none = apply_filters( 'list_cats', $parsed_args['show_option_none'], null );
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$output .= "\t<option value='" . esc_attr( $option_none_value ) . "' selected='selected'>$show_option_none</option>\n";
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}
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if ( ! empty( $categories ) ) {
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if ( $parsed_args['show_option_all'] ) {
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|
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/** This filter is documented in wp-includes/category-template.php */
|
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$show_option_all = apply_filters( 'list_cats', $parsed_args['show_option_all'], null );
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$selected = ( '0' === (string) $parsed_args['selected'] ) ? " selected='selected'" : '';
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$output .= "\t<option value='0'$selected>$show_option_all</option>\n";
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}
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if ( $parsed_args['show_option_none'] ) {
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|
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/** This filter is documented in wp-includes/category-template.php */
|
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$show_option_none = apply_filters( 'list_cats', $parsed_args['show_option_none'], null );
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$selected = selected( $option_none_value, $parsed_args['selected'], false );
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$output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$selected>$show_option_none</option>\n";
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}
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|
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if ( $parsed_args['hierarchical'] ) {
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$depth = $parsed_args['depth']; // Walk the full depth.
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} else {
|
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$depth = -1; // Flat.
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}
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$output .= walk_category_dropdown_tree( $categories, $depth, $parsed_args );
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}
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|
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if ( ! $parsed_args['hide_if_empty'] || ! empty( $categories ) ) {
|
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$output .= "</select>\n";
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}
|
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|
|
/**
|
|
* Filters the taxonomy drop-down output.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
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* @param string $output HTML output.
|
|
* @param array $parsed_args Arguments used to build the drop-down.
|
|
*/
|
|
$output = apply_filters( 'wp_dropdown_cats', $output, $parsed_args );
|
|
|
|
if ( $parsed_args['echo'] ) {
|
|
echo $output;
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Displays or retrieves the HTML list of categories.
|
|
*
|
|
* @since 2.1.0
|
|
* @since 4.4.0 Introduced the `hide_title_if_empty` and `separator` arguments.
|
|
* @since 4.4.0 The `current_category` argument was modified to optionally accept an array of values.
|
|
*
|
|
* @param array|string $args {
|
|
* Array of optional arguments. See get_categories(), get_terms(), and WP_Term_Query::__construct()
|
|
* for information on additional accepted arguments.
|
|
*
|
|
* @type int|int[] $current_category ID of category, or array of IDs of categories, that should get the
|
|
* 'current-cat' class. Default 0.
|
|
* @type int $depth Category depth. Used for tab indentation. Default 0.
|
|
* @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, or their
|
|
* bool equivalents. Default 1.
|
|
* @type int[]|string $exclude Array or comma/space-separated string of term IDs to exclude.
|
|
* If `$hierarchical` is true, descendants of `$exclude` terms will also
|
|
* be excluded; see `$exclude_tree`. See get_terms().
|
|
* Default empty string.
|
|
* @type int[]|string $exclude_tree Array or comma/space-separated string of term IDs to exclude, along
|
|
* with their descendants. See get_terms(). Default empty string.
|
|
* @type string $feed Text to use for the feed link. Default 'Feed for all posts filed
|
|
* under [cat name]'.
|
|
* @type string $feed_image URL of an image to use for the feed link. Default empty string.
|
|
* @type string $feed_type Feed type. Used to build feed link. See get_term_feed_link().
|
|
* Default empty string (default feed).
|
|
* @type bool $hide_title_if_empty Whether to hide the `$title_li` element if there are no terms in
|
|
* the list. Default false (title will always be shown).
|
|
* @type string $separator Separator between links. Default '<br />'.
|
|
* @type bool|int $show_count Whether to include post counts. Accepts 0, 1, or their bool equivalents.
|
|
* Default 0.
|
|
* @type string $show_option_all Text to display for showing all categories. Default empty string.
|
|
* @type string $show_option_none Text to display for the 'no categories' option.
|
|
* Default 'No categories'.
|
|
* @type string $style The style used to display the categories list. If 'list', categories
|
|
* will be output as an unordered list. If left empty or another value,
|
|
* categories will be output separated by `<br>` tags. Default 'list'.
|
|
* @type string $taxonomy Name of the taxonomy to retrieve. Default 'category'.
|
|
* @type string $title_li Text to use for the list title `<li>` element. Pass an empty string
|
|
* to disable. Default 'Categories'.
|
|
* @type bool|int $use_desc_for_title Whether to use the category description as the title attribute.
|
|
* Accepts 0, 1, or their bool equivalents. Default 1.
|
|
* }
|
|
* @return void|string|false Void if 'echo' argument is true, HTML list of categories if 'echo' is false.
|
|
* False if the taxonomy does not exist.
|
|
*/
|
|
function wp_list_categories( $args = '' ) {
|
|
$defaults = array(
|
|
'child_of' => 0,
|
|
'current_category' => 0,
|
|
'depth' => 0,
|
|
'echo' => 1,
|
|
'exclude' => '',
|
|
'exclude_tree' => '',
|
|
'feed' => '',
|
|
'feed_image' => '',
|
|
'feed_type' => '',
|
|
'hide_empty' => 1,
|
|
'hide_title_if_empty' => false,
|
|
'hierarchical' => true,
|
|
'order' => 'ASC',
|
|
'orderby' => 'name',
|
|
'separator' => '<br />',
|
|
'show_count' => 0,
|
|
'show_option_all' => '',
|
|
'show_option_none' => __( 'No categories' ),
|
|
'style' => 'list',
|
|
'taxonomy' => 'category',
|
|
'title_li' => __( 'Categories' ),
|
|
'use_desc_for_title' => 1,
|
|
);
|
|
|
|
$parsed_args = wp_parse_args( $args, $defaults );
|
|
|
|
if ( ! isset( $parsed_args['pad_counts'] ) && $parsed_args['show_count'] && $parsed_args['hierarchical'] ) {
|
|
$parsed_args['pad_counts'] = true;
|
|
}
|
|
|
|
// Descendants of exclusions should be excluded too.
|
|
if ( true == $parsed_args['hierarchical'] ) {
|
|
$exclude_tree = array();
|
|
|
|
if ( $parsed_args['exclude_tree'] ) {
|
|
$exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $parsed_args['exclude_tree'] ) );
|
|
}
|
|
|
|
if ( $parsed_args['exclude'] ) {
|
|
$exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $parsed_args['exclude'] ) );
|
|
}
|
|
|
|
$parsed_args['exclude_tree'] = $exclude_tree;
|
|
$parsed_args['exclude'] = '';
|
|
}
|
|
|
|
if ( ! isset( $parsed_args['class'] ) ) {
|
|
$parsed_args['class'] = ( 'category' === $parsed_args['taxonomy'] ) ? 'categories' : $parsed_args['taxonomy'];
|
|
}
|
|
|
|
if ( ! taxonomy_exists( $parsed_args['taxonomy'] ) ) {
|
|
return false;
|
|
}
|
|
|
|
$show_option_all = $parsed_args['show_option_all'];
|
|
$show_option_none = $parsed_args['show_option_none'];
|
|
|
|
$categories = get_categories( $parsed_args );
|
|
|
|
$output = '';
|
|
|
|
if ( $parsed_args['title_li'] && 'list' === $parsed_args['style']
|
|
&& ( ! empty( $categories ) || ! $parsed_args['hide_title_if_empty'] )
|
|
) {
|
|
$output = '<li class="' . esc_attr( $parsed_args['class'] ) . '">' . $parsed_args['title_li'] . '<ul>';
|
|
}
|
|
|
|
if ( empty( $categories ) ) {
|
|
if ( ! empty( $show_option_none ) ) {
|
|
if ( 'list' === $parsed_args['style'] ) {
|
|
$output .= '<li class="cat-item-none">' . $show_option_none . '</li>';
|
|
} else {
|
|
$output .= $show_option_none;
|
|
}
|
|
}
|
|
} else {
|
|
if ( ! empty( $show_option_all ) ) {
|
|
|
|
$posts_page = '';
|
|
|
|
// For taxonomies that belong only to custom post types, point to a valid archive.
|
|
$taxonomy_object = get_taxonomy( $parsed_args['taxonomy'] );
|
|
if ( ! in_array( 'post', $taxonomy_object->object_type, true ) && ! in_array( 'page', $taxonomy_object->object_type, true ) ) {
|
|
foreach ( $taxonomy_object->object_type as $object_type ) {
|
|
$_object_type = get_post_type_object( $object_type );
|
|
|
|
// Grab the first one.
|
|
if ( ! empty( $_object_type->has_archive ) ) {
|
|
$posts_page = get_post_type_archive_link( $object_type );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fallback for the 'All' link is the posts page.
|
|
if ( ! $posts_page ) {
|
|
if ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ) {
|
|
$posts_page = get_permalink( get_option( 'page_for_posts' ) );
|
|
} else {
|
|
$posts_page = home_url( '/' );
|
|
}
|
|
}
|
|
|
|
$posts_page = esc_url( $posts_page );
|
|
if ( 'list' === $parsed_args['style'] ) {
|
|
$output .= "<li class='cat-item-all'><a href='$posts_page'>$show_option_all</a></li>";
|
|
} else {
|
|
$output .= "<a href='$posts_page'>$show_option_all</a>";
|
|
}
|
|
}
|
|
|
|
if ( empty( $parsed_args['current_category'] ) && ( is_category() || is_tax() || is_tag() ) ) {
|
|
$current_term_object = get_queried_object();
|
|
if ( $current_term_object && $parsed_args['taxonomy'] === $current_term_object->taxonomy ) {
|
|
$parsed_args['current_category'] = get_queried_object_id();
|
|
}
|
|
}
|
|
|
|
if ( $parsed_args['hierarchical'] ) {
|
|
$depth = $parsed_args['depth'];
|
|
} else {
|
|
$depth = -1; // Flat.
|
|
}
|
|
$output .= walk_category_tree( $categories, $depth, $parsed_args );
|
|
}
|
|
|
|
if ( $parsed_args['title_li'] && 'list' === $parsed_args['style']
|
|
&& ( ! empty( $categories ) || ! $parsed_args['hide_title_if_empty'] )
|
|
) {
|
|
$output .= '</ul></li>';
|
|
}
|
|
|
|
/**
|
|
* Filters the HTML output of a taxonomy list.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output HTML output.
|
|
* @param array $args An array of taxonomy-listing arguments. See wp_list_categories()
|
|
* for information on accepted arguments.
|
|
*/
|
|
$html = apply_filters( 'wp_list_categories', $output, $args );
|
|
|
|
if ( $parsed_args['echo'] ) {
|
|
echo $html;
|
|
} else {
|
|
return $html;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Displays a tag cloud.
|
|
*
|
|
* Outputs a list of tags in what is called a 'tag cloud', where the size of each tag
|
|
* is determined by how many times that particular tag has been assigned to posts.
|
|
*
|
|
* @since 2.3.0
|
|
* @since 2.8.0 Added the `taxonomy` argument.
|
|
* @since 4.8.0 Added the `show_count` argument.
|
|
*
|
|
* @param array|string $args {
|
|
* Optional. Array or string of arguments for displaying a tag cloud. See wp_generate_tag_cloud()
|
|
* and get_terms() for the full lists of arguments that can be passed in `$args`.
|
|
*
|
|
* @type int $number The number of tags to display. Accepts any positive integer
|
|
* or zero to return all. Default 45.
|
|
* @type string $link Whether to display term editing links or term permalinks.
|
|
* Accepts 'edit' and 'view'. Default 'view'.
|
|
* @type string $post_type The post type. Used to highlight the proper post type menu
|
|
* on the linked edit page. Defaults to the first post type
|
|
* associated with the taxonomy.
|
|
* @type bool $echo Whether or not to echo the return value. Default true.
|
|
* }
|
|
* @return void|string|string[] Void if 'echo' argument is true, or on failure. Otherwise, tag cloud
|
|
* as a string or an array, depending on 'format' argument.
|
|
*/
|
|
function wp_tag_cloud( $args = '' ) {
|
|
$defaults = array(
|
|
'smallest' => 8,
|
|
'largest' => 22,
|
|
'unit' => 'pt',
|
|
'number' => 45,
|
|
'format' => 'flat',
|
|
'separator' => "\n",
|
|
'orderby' => 'name',
|
|
'order' => 'ASC',
|
|
'exclude' => '',
|
|
'include' => '',
|
|
'link' => 'view',
|
|
'taxonomy' => 'post_tag',
|
|
'post_type' => '',
|
|
'echo' => true,
|
|
'show_count' => 0,
|
|
);
|
|
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$tags = get_terms(
|
|
array_merge(
|
|
$args,
|
|
array(
|
|
'orderby' => 'count',
|
|
'order' => 'DESC',
|
|
)
|
|
)
|
|
); // Always query top tags.
|
|
|
|
if ( empty( $tags ) || is_wp_error( $tags ) ) {
|
|
return;
|
|
}
|
|
|
|
foreach ( $tags as $key => $tag ) {
|
|
if ( 'edit' === $args['link'] ) {
|
|
$link = get_edit_term_link( $tag, $tag->taxonomy, $args['post_type'] );
|
|
} else {
|
|
$link = get_term_link( $tag, $tag->taxonomy );
|
|
}
|
|
|
|
if ( is_wp_error( $link ) ) {
|
|
return;
|
|
}
|
|
|
|
$tags[ $key ]->link = $link;
|
|
$tags[ $key ]->id = $tag->term_id;
|
|
}
|
|
|
|
// Here's where those top tags get sorted according to $args.
|
|
$return = wp_generate_tag_cloud( $tags, $args );
|
|
|
|
/**
|
|
* Filters the tag cloud output.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string|string[] $return Tag cloud as a string or an array, depending on 'format' argument.
|
|
* @param array $args An array of tag cloud arguments. See wp_tag_cloud()
|
|
* for information on accepted arguments.
|
|
*/
|
|
$return = apply_filters( 'wp_tag_cloud', $return, $args );
|
|
|
|
if ( 'array' === $args['format'] || empty( $args['echo'] ) ) {
|
|
return $return;
|
|
}
|
|
|
|
echo $return;
|
|
}
|
|
|
|
/**
|
|
* Default topic count scaling for tag links.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @param int $count Number of posts with that tag.
|
|
* @return int Scaled count.
|
|
*/
|
|
function default_topic_count_scale( $count ) {
|
|
return round( log10( $count + 1 ) * 100 );
|
|
}
|
|
|
|
/**
|
|
* Generates a tag cloud (heatmap) from provided data.
|
|
*
|
|
* @todo Complete functionality.
|
|
* @since 2.3.0
|
|
* @since 4.8.0 Added the `show_count` argument.
|
|
*
|
|
* @param WP_Term[] $tags Array of WP_Term objects to generate the tag cloud for.
|
|
* @param string|array $args {
|
|
* Optional. Array or string of arguments for generating a tag cloud.
|
|
*
|
|
* @type int $smallest Smallest font size used to display tags. Paired
|
|
* with the value of `$unit`, to determine CSS text
|
|
* size unit. Default 8 (pt).
|
|
* @type int $largest Largest font size used to display tags. Paired
|
|
* with the value of `$unit`, to determine CSS text
|
|
* size unit. Default 22 (pt).
|
|
* @type string $unit CSS text size unit to use with the `$smallest`
|
|
* and `$largest` values. Accepts any valid CSS text
|
|
* size unit. Default 'pt'.
|
|
* @type int $number The number of tags to return. Accepts any
|
|
* positive integer or zero to return all.
|
|
* Default 0.
|
|
* @type string $format Format to display the tag cloud in. Accepts 'flat'
|
|
* (tags separated with spaces), 'list' (tags displayed
|
|
* in an unordered list), or 'array' (returns an array).
|
|
* Default 'flat'.
|
|
* @type string $separator HTML or text to separate the tags. Default "\n" (newline).
|
|
* @type string $orderby Value to order tags by. Accepts 'name' or 'count'.
|
|
* Default 'name'. The {@see 'tag_cloud_sort'} filter
|
|
* can also affect how tags are sorted.
|
|
* @type string $order How to order the tags. Accepts 'ASC' (ascending),
|
|
* 'DESC' (descending), or 'RAND' (random). Default 'ASC'.
|
|
* @type int|bool $filter Whether to enable filtering of the final output
|
|
* via {@see 'wp_generate_tag_cloud'}. Default 1.
|
|
* @type string $topic_count_text Nooped plural text from _n_noop() to supply to
|
|
* tag counts. Default null.
|
|
* @type callable $topic_count_text_callback Callback used to generate nooped plural text for
|
|
* tag counts based on the count. Default null.
|
|
* @type callable $topic_count_scale_callback Callback used to determine the tag count scaling
|
|
* value. Default default_topic_count_scale().
|
|
* @type bool|int $show_count Whether to display the tag counts. Default 0. Accepts
|
|
* 0, 1, or their bool equivalents.
|
|
* }
|
|
* @return string|string[] Tag cloud as a string or an array, depending on 'format' argument.
|
|
*/
|
|
function wp_generate_tag_cloud( $tags, $args = '' ) {
|
|
$defaults = array(
|
|
'smallest' => 8,
|
|
'largest' => 22,
|
|
'unit' => 'pt',
|
|
'number' => 0,
|
|
'format' => 'flat',
|
|
'separator' => "\n",
|
|
'orderby' => 'name',
|
|
'order' => 'ASC',
|
|
'topic_count_text' => null,
|
|
'topic_count_text_callback' => null,
|
|
'topic_count_scale_callback' => 'default_topic_count_scale',
|
|
'filter' => 1,
|
|
'show_count' => 0,
|
|
);
|
|
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$return = ( 'array' === $args['format'] ) ? array() : '';
|
|
|
|
if ( empty( $tags ) ) {
|
|
return $return;
|
|
}
|
|
|
|
// Juggle topic counts.
|
|
if ( isset( $args['topic_count_text'] ) ) {
|
|
// First look for nooped plural support via topic_count_text.
|
|
$translate_nooped_plural = $args['topic_count_text'];
|
|
} elseif ( ! empty( $args['topic_count_text_callback'] ) ) {
|
|
// Look for the alternative callback style. Ignore the previous default.
|
|
if ( 'default_topic_count_text' === $args['topic_count_text_callback'] ) {
|
|
/* translators: %s: Number of items (tags). */
|
|
$translate_nooped_plural = _n_noop( '%s item', '%s items' );
|
|
} else {
|
|
$translate_nooped_plural = false;
|
|
}
|
|
} elseif ( isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) {
|
|
// If no callback exists, look for the old-style single_text and multiple_text arguments.
|
|
// phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralSingle,WordPress.WP.I18n.NonSingularStringLiteralPlural
|
|
$translate_nooped_plural = _n_noop( $args['single_text'], $args['multiple_text'] );
|
|
} else {
|
|
// This is the default for when no callback, plural, or argument is passed in.
|
|
/* translators: %s: Number of items (tags). */
|
|
$translate_nooped_plural = _n_noop( '%s item', '%s items' );
|
|
}
|
|
|
|
/**
|
|
* Filters how the items in a tag cloud are sorted.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param WP_Term[] $tags Ordered array of terms.
|
|
* @param array $args An array of tag cloud arguments.
|
|
*/
|
|
$tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args );
|
|
if ( empty( $tags_sorted ) ) {
|
|
return $return;
|
|
}
|
|
|
|
if ( $tags_sorted !== $tags ) {
|
|
$tags = $tags_sorted;
|
|
unset( $tags_sorted );
|
|
} else {
|
|
if ( 'RAND' === $args['order'] ) {
|
|
shuffle( $tags );
|
|
} else {
|
|
// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
|
|
if ( 'name' === $args['orderby'] ) {
|
|
uasort( $tags, '_wp_object_name_sort_cb' );
|
|
} else {
|
|
uasort( $tags, '_wp_object_count_sort_cb' );
|
|
}
|
|
|
|
if ( 'DESC' === $args['order'] ) {
|
|
$tags = array_reverse( $tags, true );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $args['number'] > 0 ) {
|
|
$tags = array_slice( $tags, 0, $args['number'] );
|
|
}
|
|
|
|
$counts = array();
|
|
$real_counts = array(); // For the alt tag.
|
|
foreach ( (array) $tags as $key => $tag ) {
|
|
$real_counts[ $key ] = $tag->count;
|
|
$counts[ $key ] = call_user_func( $args['topic_count_scale_callback'], $tag->count );
|
|
}
|
|
|
|
$min_count = min( $counts );
|
|
$spread = max( $counts ) - $min_count;
|
|
if ( $spread <= 0 ) {
|
|
$spread = 1;
|
|
}
|
|
$font_spread = $args['largest'] - $args['smallest'];
|
|
if ( $font_spread < 0 ) {
|
|
$font_spread = 1;
|
|
}
|
|
$font_step = $font_spread / $spread;
|
|
|
|
$aria_label = false;
|
|
/*
|
|
* Determine whether to output an 'aria-label' attribute with the tag name and count.
|
|
* When tags have a different font size, they visually convey an important information
|
|
* that should be available to assistive technologies too. On the other hand, sometimes
|
|
* themes set up the Tag Cloud to display all tags with the same font size (setting
|
|
* the 'smallest' and 'largest' arguments to the same value).
|
|
* In order to always serve the same content to all users, the 'aria-label' gets printed out:
|
|
* - when tags have a different size
|
|
* - when the tag count is displayed (for example when users check the checkbox in the
|
|
* Tag Cloud widget), regardless of the tags font size
|
|
*/
|
|
if ( $args['show_count'] || 0 !== $font_spread ) {
|
|
$aria_label = true;
|
|
}
|
|
|
|
// Assemble the data that will be used to generate the tag cloud markup.
|
|
$tags_data = array();
|
|
foreach ( $tags as $key => $tag ) {
|
|
$tag_id = isset( $tag->id ) ? $tag->id : $key;
|
|
|
|
$count = $counts[ $key ];
|
|
$real_count = $real_counts[ $key ];
|
|
|
|
if ( $translate_nooped_plural ) {
|
|
$formatted_count = sprintf( translate_nooped_plural( $translate_nooped_plural, $real_count ), number_format_i18n( $real_count ) );
|
|
} else {
|
|
$formatted_count = call_user_func( $args['topic_count_text_callback'], $real_count, $tag, $args );
|
|
}
|
|
|
|
$tags_data[] = array(
|
|
'id' => $tag_id,
|
|
'url' => ( '#' !== $tag->link ) ? $tag->link : '#',
|
|
'role' => ( '#' !== $tag->link ) ? '' : ' role="button"',
|
|
'name' => $tag->name,
|
|
'formatted_count' => $formatted_count,
|
|
'slug' => $tag->slug,
|
|
'real_count' => $real_count,
|
|
'class' => 'tag-cloud-link tag-link-' . $tag_id,
|
|
'font_size' => $args['smallest'] + ( $count - $min_count ) * $font_step,
|
|
'aria_label' => $aria_label ? sprintf( ' aria-label="%1$s (%2$s)"', esc_attr( $tag->name ), esc_attr( $formatted_count ) ) : '',
|
|
'show_count' => $args['show_count'] ? '<span class="tag-link-count"> (' . $real_count . ')</span>' : '',
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Filters the data used to generate the tag cloud.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param array[] $tags_data An array of term data arrays for terms used to generate the tag cloud.
|
|
*/
|
|
$tags_data = apply_filters( 'wp_generate_tag_cloud_data', $tags_data );
|
|
|
|
$a = array();
|
|
|
|
// Generate the output links array.
|
|
foreach ( $tags_data as $key => $tag_data ) {
|
|
$class = $tag_data['class'] . ' tag-link-position-' . ( $key + 1 );
|
|
$a[] = sprintf(
|
|
'<a href="%1$s"%2$s class="%3$s" style="font-size: %4$s;"%5$s>%6$s%7$s</a>',
|
|
esc_url( $tag_data['url'] ),
|
|
$tag_data['role'],
|
|
esc_attr( $class ),
|
|
esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ),
|
|
$tag_data['aria_label'],
|
|
esc_html( $tag_data['name'] ),
|
|
$tag_data['show_count']
|
|
);
|
|
}
|
|
|
|
switch ( $args['format'] ) {
|
|
case 'array':
|
|
$return =& $a;
|
|
break;
|
|
case 'list':
|
|
/*
|
|
* Force role="list", as some browsers (sic: Safari 10) don't expose to assistive
|
|
* technologies the default role when the list is styled with `list-style: none`.
|
|
* Note: this is redundant but doesn't harm.
|
|
*/
|
|
$return = "<ul class='wp-tag-cloud' role='list'>\n\t<li>";
|
|
$return .= implode( "</li>\n\t<li>", $a );
|
|
$return .= "</li>\n</ul>\n";
|
|
break;
|
|
default:
|
|
$return = implode( $args['separator'], $a );
|
|
break;
|
|
}
|
|
|
|
if ( $args['filter'] ) {
|
|
/**
|
|
* Filters the generated output of a tag cloud.
|
|
*
|
|
* The filter is only evaluated if a true value is passed
|
|
* to the $filter argument in wp_generate_tag_cloud().
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @see wp_generate_tag_cloud()
|
|
*
|
|
* @param string[]|string $return String containing the generated HTML tag cloud output
|
|
* or an array of tag links if the 'format' argument
|
|
* equals 'array'.
|
|
* @param WP_Term[] $tags An array of terms used in the tag cloud.
|
|
* @param array $args An array of wp_generate_tag_cloud() arguments.
|
|
*/
|
|
return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
|
|
} else {
|
|
return $return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Serves as a callback for comparing objects based on name.
|
|
*
|
|
* Used with `uasort()`.
|
|
*
|
|
* @since 3.1.0
|
|
* @access private
|
|
*
|
|
* @param object $a The first object to compare.
|
|
* @param object $b The second object to compare.
|
|
* @return int Negative number if `$a->name` is less than `$b->name`, zero if they are equal,
|
|
* or greater than zero if `$a->name` is greater than `$b->name`.
|
|
*/
|
|
function _wp_object_name_sort_cb( $a, $b ) {
|
|
return strnatcasecmp( $a->name, $b->name );
|
|
}
|
|
|
|
/**
|
|
* Serves as a callback for comparing objects based on count.
|
|
*
|
|
* Used with `uasort()`.
|
|
*
|
|
* @since 3.1.0
|
|
* @access private
|
|
*
|
|
* @param object $a The first object to compare.
|
|
* @param object $b The second object to compare.
|
|
* @return bool Whether the count value for `$a` is greater than the count value for `$b`.
|
|
*/
|
|
function _wp_object_count_sort_cb( $a, $b ) {
|
|
return ( $a->count > $b->count );
|
|
}
|
|
|
|
//
|
|
// Helper functions.
|
|
//
|
|
|
|
/**
|
|
* Retrieves HTML list content for category list.
|
|
*
|
|
* @since 2.1.0
|
|
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
|
|
* to the function signature.
|
|
*
|
|
* @uses Walker_Category to create HTML list content.
|
|
* @see Walker::walk() for parameters and return description.
|
|
*
|
|
* @param mixed ...$args Elements array, maximum hierarchical depth and optional additional arguments.
|
|
* @return string
|
|
*/
|
|
function walk_category_tree( ...$args ) {
|
|
// The user's options are the third parameter.
|
|
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
|
|
$walker = new Walker_Category;
|
|
} else {
|
|
/**
|
|
* @var Walker $walker
|
|
*/
|
|
$walker = $args[2]['walker'];
|
|
}
|
|
return $walker->walk( ...$args );
|
|
}
|
|
|
|
/**
|
|
* Retrieves HTML dropdown (select) content for category list.
|
|
*
|
|
* @since 2.1.0
|
|
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
|
|
* to the function signature.
|
|
*
|
|
* @uses Walker_CategoryDropdown to create HTML dropdown content.
|
|
* @see Walker::walk() for parameters and return description.
|
|
*
|
|
* @param mixed ...$args Elements array, maximum hierarchical depth and optional additional arguments.
|
|
* @return string
|
|
*/
|
|
function walk_category_dropdown_tree( ...$args ) {
|
|
// The user's options are the third parameter.
|
|
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
|
|
$walker = new Walker_CategoryDropdown;
|
|
} else {
|
|
/**
|
|
* @var Walker $walker
|
|
*/
|
|
$walker = $args[2]['walker'];
|
|
}
|
|
return $walker->walk( ...$args );
|
|
}
|
|
|
|
//
|
|
// Tags.
|
|
//
|
|
|
|
/**
|
|
* Retrieves the link to the tag.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @see get_term_link()
|
|
*
|
|
* @param int|object $tag Tag ID or object.
|
|
* @return string Link on success, empty string if tag does not exist.
|
|
*/
|
|
function get_tag_link( $tag ) {
|
|
return get_category_link( $tag );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the tags for a post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param int|WP_Post $post_id Post ID or object.
|
|
* @return WP_Term[]|false|WP_Error Array of WP_Term objects on success, false if there are no terms
|
|
* or the post does not exist, WP_Error on failure.
|
|
*/
|
|
function get_the_tags( $post_id = 0 ) {
|
|
$terms = get_the_terms( $post_id, 'post_tag' );
|
|
|
|
/**
|
|
* Filters the array of tags for the given post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @see get_the_terms()
|
|
*
|
|
* @param WP_Term[]|false|WP_Error $terms Array of WP_Term objects on success, false if there are no terms
|
|
* or the post does not exist, WP_Error on failure.
|
|
*/
|
|
return apply_filters( 'get_the_tags', $terms );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the tags for a post formatted as a string.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $before Optional. String to use before the tags. Default empty.
|
|
* @param string $sep Optional. String to use between the tags. Default empty.
|
|
* @param string $after Optional. String to use after the tags. Default empty.
|
|
* @param int $post_id Optional. Post ID. Defaults to the current post ID.
|
|
* @return string|false|WP_Error A list of tags on success, false if there are no terms,
|
|
* WP_Error on failure.
|
|
*/
|
|
function get_the_tag_list( $before = '', $sep = '', $after = '', $post_id = 0 ) {
|
|
$tag_list = get_the_term_list( $post_id, 'post_tag', $before, $sep, $after );
|
|
|
|
/**
|
|
* Filters the tags list for a given post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $tag_list List of tags.
|
|
* @param string $before String to use before the tags.
|
|
* @param string $sep String to use between the tags.
|
|
* @param string $after String to use after the tags.
|
|
* @param int $post_id Post ID.
|
|
*/
|
|
return apply_filters( 'the_tags', $tag_list, $before, $sep, $after, $post_id );
|
|
}
|
|
|
|
/**
|
|
* Displays the tags for a post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $before Optional. String to use before the tags. Defaults to 'Tags:'.
|
|
* @param string $sep Optional. String to use between the tags. Default ', '.
|
|
* @param string $after Optional. String to use after the tags. Default empty.
|
|
*/
|
|
function the_tags( $before = null, $sep = ', ', $after = '' ) {
|
|
if ( null === $before ) {
|
|
$before = __( 'Tags: ' );
|
|
}
|
|
|
|
$the_tags = get_the_tag_list( $before, $sep, $after );
|
|
|
|
if ( ! is_wp_error( $the_tags ) ) {
|
|
echo $the_tags;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieves tag description.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int $tag Optional. Tag ID. Defaults to the current tag ID.
|
|
* @return string Tag description, if available.
|
|
*/
|
|
function tag_description( $tag = 0 ) {
|
|
return term_description( $tag );
|
|
}
|
|
|
|
/**
|
|
* Retrieves term description.
|
|
*
|
|
* @since 2.8.0
|
|
* @since 4.9.2 The `$taxonomy` parameter was deprecated.
|
|
*
|
|
* @param int $term Optional. Term ID. Defaults to the current term ID.
|
|
* @param null $deprecated Deprecated. Not used.
|
|
* @return string Term description, if available.
|
|
*/
|
|
function term_description( $term = 0, $deprecated = null ) {
|
|
if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
|
|
$term = get_queried_object();
|
|
if ( $term ) {
|
|
$term = $term->term_id;
|
|
}
|
|
}
|
|
|
|
$description = get_term_field( 'description', $term );
|
|
|
|
return is_wp_error( $description ) ? '' : $description;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the terms of the taxonomy that are attached to the post.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int|WP_Post $post Post ID or object.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @return WP_Term[]|false|WP_Error Array of WP_Term objects on success, false if there are no terms
|
|
* or the post does not exist, WP_Error on failure.
|
|
*/
|
|
function get_the_terms( $post, $taxonomy ) {
|
|
$post = get_post( $post );
|
|
if ( ! $post ) {
|
|
return false;
|
|
}
|
|
|
|
$terms = get_object_term_cache( $post->ID, $taxonomy );
|
|
if ( false === $terms ) {
|
|
$terms = wp_get_object_terms( $post->ID, $taxonomy );
|
|
if ( ! is_wp_error( $terms ) ) {
|
|
$term_ids = wp_list_pluck( $terms, 'term_id' );
|
|
wp_cache_add( $post->ID, $term_ids, $taxonomy . '_relationships' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filters the list of terms attached to the given post.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param WP_Term[]|WP_Error $terms Array of attached terms, or WP_Error on failure.
|
|
* @param int $post_id Post ID.
|
|
* @param string $taxonomy Name of the taxonomy.
|
|
*/
|
|
$terms = apply_filters( 'get_the_terms', $terms, $post->ID, $taxonomy );
|
|
|
|
if ( empty( $terms ) ) {
|
|
return false;
|
|
}
|
|
|
|
return $terms;
|
|
}
|
|
|
|
/**
|
|
* Retrieves a post's terms as a list with specified format.
|
|
*
|
|
* Terms are linked to their respective term listing pages.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int $post_id Post ID.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @param string $before Optional. String to use before the terms. Default empty.
|
|
* @param string $sep Optional. String to use between the terms. Default empty.
|
|
* @param string $after Optional. String to use after the terms. Default empty.
|
|
* @return string|false|WP_Error A list of terms on success, false if there are no terms,
|
|
* WP_Error on failure.
|
|
*/
|
|
function get_the_term_list( $post_id, $taxonomy, $before = '', $sep = '', $after = '' ) {
|
|
$terms = get_the_terms( $post_id, $taxonomy );
|
|
|
|
if ( is_wp_error( $terms ) ) {
|
|
return $terms;
|
|
}
|
|
|
|
if ( empty( $terms ) ) {
|
|
return false;
|
|
}
|
|
|
|
$links = array();
|
|
|
|
foreach ( $terms as $term ) {
|
|
$link = get_term_link( $term, $taxonomy );
|
|
if ( is_wp_error( $link ) ) {
|
|
return $link;
|
|
}
|
|
$links[] = '<a href="' . esc_url( $link ) . '" rel="tag">' . $term->name . '</a>';
|
|
}
|
|
|
|
/**
|
|
* Filters the term links for a given taxonomy.
|
|
*
|
|
* The dynamic portion of the hook name, `$taxonomy`, refers
|
|
* to the taxonomy slug.
|
|
*
|
|
* Possible hook names include:
|
|
*
|
|
* - `term_links-category`
|
|
* - `term_links-post_tag`
|
|
* - `term_links-post_format`
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param string[] $links An array of term links.
|
|
*/
|
|
$term_links = apply_filters( "term_links-{$taxonomy}", $links ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
|
|
|
|
return $before . implode( $sep, $term_links ) . $after;
|
|
}
|
|
|
|
/**
|
|
* Retrieves term parents with separator.
|
|
*
|
|
* @since 4.8.0
|
|
*
|
|
* @param int $term_id Term ID.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @param string|array $args {
|
|
* Array of optional arguments.
|
|
*
|
|
* @type string $format Use term names or slugs for display. Accepts 'name' or 'slug'.
|
|
* Default 'name'.
|
|
* @type string $separator Separator for between the terms. Default '/'.
|
|
* @type bool $link Whether to format as a link. Default true.
|
|
* @type bool $inclusive Include the term to get the parents for. Default true.
|
|
* }
|
|
* @return string|WP_Error A list of term parents on success, WP_Error or empty string on failure.
|
|
*/
|
|
function get_term_parents_list( $term_id, $taxonomy, $args = array() ) {
|
|
$list = '';
|
|
$term = get_term( $term_id, $taxonomy );
|
|
|
|
if ( is_wp_error( $term ) ) {
|
|
return $term;
|
|
}
|
|
|
|
if ( ! $term ) {
|
|
return $list;
|
|
}
|
|
|
|
$term_id = $term->term_id;
|
|
|
|
$defaults = array(
|
|
'format' => 'name',
|
|
'separator' => '/',
|
|
'link' => true,
|
|
'inclusive' => true,
|
|
);
|
|
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
foreach ( array( 'link', 'inclusive' ) as $bool ) {
|
|
$args[ $bool ] = wp_validate_boolean( $args[ $bool ] );
|
|
}
|
|
|
|
$parents = get_ancestors( $term_id, $taxonomy, 'taxonomy' );
|
|
|
|
if ( $args['inclusive'] ) {
|
|
array_unshift( $parents, $term_id );
|
|
}
|
|
|
|
foreach ( array_reverse( $parents ) as $term_id ) {
|
|
$parent = get_term( $term_id, $taxonomy );
|
|
$name = ( 'slug' === $args['format'] ) ? $parent->slug : $parent->name;
|
|
|
|
if ( $args['link'] ) {
|
|
$list .= '<a href="' . esc_url( get_term_link( $parent->term_id, $taxonomy ) ) . '">' . $name . '</a>' . $args['separator'];
|
|
} else {
|
|
$list .= $name . $args['separator'];
|
|
}
|
|
}
|
|
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Displays the terms for a post in a list.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int $post_id Post ID.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @param string $before Optional. String to use before the terms. Default empty.
|
|
* @param string $sep Optional. String to use between the terms. Default ', '.
|
|
* @param string $after Optional. String to use after the terms. Default empty.
|
|
* @return void|false Void on success, false on failure.
|
|
*/
|
|
function the_terms( $post_id, $taxonomy, $before = '', $sep = ', ', $after = '' ) {
|
|
$term_list = get_the_term_list( $post_id, $taxonomy, $before, $sep, $after );
|
|
|
|
if ( is_wp_error( $term_list ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Filters the list of terms to display.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @param string $term_list List of terms to display.
|
|
* @param string $taxonomy The taxonomy name.
|
|
* @param string $before String to use before the terms.
|
|
* @param string $sep String to use between the terms.
|
|
* @param string $after String to use after the terms.
|
|
*/
|
|
echo apply_filters( 'the_terms', $term_list, $taxonomy, $before, $sep, $after );
|
|
}
|
|
|
|
/**
|
|
* Checks if the current post has any of given category.
|
|
*
|
|
* The given categories are checked against the post's categories' term_ids, names and slugs.
|
|
* Categories given as integers will only be checked against the post's categories' term_ids.
|
|
*
|
|
* If no categories are given, determines if post has any categories.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param string|int|array $category Optional. The category name/term_id/slug,
|
|
* or an array of them to check for. Default empty.
|
|
* @param int|object $post Optional. Post to check instead of the current post.
|
|
* @return bool True if the current post has any of the given categories
|
|
* (or any category, if no category specified). False otherwise.
|
|
*/
|
|
function has_category( $category = '', $post = null ) {
|
|
return has_term( $category, 'category', $post );
|
|
}
|
|
|
|
/**
|
|
* Checks if the current post has any of given tags.
|
|
*
|
|
* The given tags are checked against the post's tags' term_ids, names and slugs.
|
|
* Tags given as integers will only be checked against the post's tags' term_ids.
|
|
*
|
|
* If no tags are given, determines if post has any tags.
|
|
*
|
|
* For more information on this and similar theme functions, check out
|
|
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
|
|
* Conditional Tags} article in the Theme Developer Handbook.
|
|
*
|
|
* @since 2.6.0
|
|
* @since 2.7.0 Tags given as integers are only checked against
|
|
* the post's tags' term_ids, not names or slugs.
|
|
* @since 2.7.0 Can be used outside of the WordPress Loop if `$post` is provided.
|
|
*
|
|
* @param string|int|array $tag Optional. The tag name/term_id/slug,
|
|
* or an array of them to check for. Default empty.
|
|
* @param int|object $post Optional. Post to check instead of the current post.
|
|
* @return bool True if the current post has any of the given tags
|
|
* (or any tag, if no tag specified). False otherwise.
|
|
*/
|
|
function has_tag( $tag = '', $post = null ) {
|
|
return has_term( $tag, 'post_tag', $post );
|
|
}
|
|
|
|
/**
|
|
* Checks if the current post has any of given terms.
|
|
*
|
|
* The given terms are checked against the post's terms' term_ids, names and slugs.
|
|
* Terms given as integers will only be checked against the post's terms' term_ids.
|
|
*
|
|
* If no terms are given, determines if post has any terms.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param string|int|array $term Optional. The term name/term_id/slug,
|
|
* or an array of them to check for. Default empty.
|
|
* @param string $taxonomy Optional. Taxonomy name. Default empty.
|
|
* @param int|WP_Post $post Optional. Post to check instead of the current post.
|
|
* @return bool True if the current post has any of the given terms
|
|
* (or any term, if no term specified). False otherwise.
|
|
*/
|
|
function has_term( $term = '', $taxonomy = '', $post = null ) {
|
|
$post = get_post( $post );
|
|
|
|
if ( ! $post ) {
|
|
return false;
|
|
}
|
|
|
|
$r = is_object_in_term( $post->ID, $taxonomy, $term );
|
|
if ( is_wp_error( $r ) ) {
|
|
return false;
|
|
}
|
|
|
|
return $r;
|
|
}
|