WordPress-C
/
WordPress
mirror of https://github.com/WordPress/WordPress.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Improve 'orderby' syntax for `WP_Comment_Query`. 

Since [29027], `WP_Query` has supported an array of values for the `$orderby`
parameter, with field names as array keys and ASC/DESC as the array values.
This changeset introduces the same syntax to `WP_Comment_Query`.

We leverage the new support for multiple ORDER BY clauses to fix a bug that
causes comments to be queried in an indeterminate order when sorting by the
default `comment_date_gmt` and comments share the same value for
`comment_date_gmt`. By always including a `comment_ID` subclause at the end of
the ORDER BY statement, we ensure that comments always have a unique fallback
for sorting.

This changeset also includes improvements paralleling those introduced to
`WP_Query` in [31312] and [31340], which allow `$orderby` to accept array keys
from specific `$meta_query` clauses. This change lets devs sort by multiple
clauses of an associated meta query. See #31045.

Fixes #30478. See #31265.
Built from https://develop.svn.wordpress.org/trunk@31467


git-svn-id: http://core.svn.wordpress.org/trunk@31448 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Boone Gorges 2015-02-16 14:10:27 +00:00
parent 5715db82d4
commit a224ff7d9b
2 changed files with 169 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

212
wp-includes/comment.php
View File

@ -326,14 +326,18 @@ class WP_Comment_Query {
* @type int $number Maximum number of comments to retrieve. Default null (no limit).
* @type int $offset Number of comments to offset the query. Used to build LIMIT clause.
* Default 0.
* @type string|array $orderby Comment status or array of statuses. Accepts 'comment_agent',
* 'comment_approved', 'comment_author', 'comment_author_email',
* 'comment_author_IP', 'comment_author_url', 'comment_content',
* 'comment_date', 'comment_date_gmt', 'comment_ID', 'comment_karma',
* @type string|array $orderby Comment status or array of statuses. To use 'meta_value' or
* 'meta_value_num', `$meta_key` must also be defined. To sort by
* a specific `$meta_query` clause, use that clause's array key.
* Accepts 'comment_agent', 'comment_approved', 'comment_author',
* 'comment_author_email', 'comment_author_IP',
* 'comment_author_url', 'comment_content', 'comment_date',
* 'comment_date_gmt', 'comment_ID', 'comment_karma',
* 'comment_parent', 'comment_post_ID', 'comment_type', 'user_id',
* 'meta_value', 'meta_value_num', or value of $meta_key.
* Also accepts false, empty array, or 'none' to disable `ORDER BY`
* clause. Default: 'comment_date_gmt'.
* 'meta_value', 'meta_value_num', the value of $meta_key, and the
* array keys of `$meta_query`. Also accepts false, an empty array,
* or 'none' to disable `ORDER BY` clause.
* Default: 'comment_date_gmt'.
* @type string $order How to order retrieved comments. Accepts 'ASC', 'DESC'.
* Default: 'DESC'.
* @type int $parent Parent ID of comment to retrieve children of. Default empty.
@ -411,6 +415,10 @@ class WP_Comment_Query {
$this->meta_query = new WP_Meta_Query();
$this->meta_query->parse_query_vars( $this->query_vars );
if ( ! empty( $this->meta_query->queries ) ) {
$meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this );
}
/**
* Fires before comments are retrieved.
*
@ -514,39 +522,75 @@ class WP_Comment_Query {
$this->query_vars['orderby'] :
preg_split( '/[,\s]/', $this->query_vars['orderby'] );
$allowed_keys = array(
'comment_agent',
'comment_approved',
'comment_author',
'comment_author_email',
'comment_author_IP',
'comment_author_url',
'comment_content',
'comment_date',
'comment_date_gmt',
'comment_ID',
'comment_karma',
'comment_parent',
'comment_post_ID',
'comment_type',
'user_id',
);
if ( ! empty( $this->query_vars['meta_key'] ) ) {
$allowed_keys[] = $this->query_vars['meta_key'];
$allowed_keys[] = 'meta_value';
$allowed_keys[] = 'meta_value_num';
}
$ordersby = array_intersect( $ordersby, $allowed_keys );
foreach ( $ordersby as $key => $value ) {
if ( $value == $this->query_vars['meta_key'] || $value == 'meta_value' ) {
$ordersby[ $key ] = "$wpdb->commentmeta.meta_value";
} elseif ( $value == 'meta_value_num' ) {
$ordersby[ $key ] = "$wpdb->commentmeta.meta_value+0";
$orderby_array = array();
$found_orderby_comment_ID = false;
foreach ( $ordersby as $_key => $_value ) {
if ( ! $_value ) {
continue;
}
if ( is_int( $_key ) ) {
$_orderby = $_value;
$_order = $order;
} else {
$_orderby = $_key;
$_order = $_value;
}
if ( ! $found_orderby_comment_ID && 'comment_ID' === $_orderby ) {
$found_orderby_comment_ID = true;
}
$parsed = $this->parse_orderby( $_orderby );
if ( ! $parsed ) {
continue;
}
$orderby_array[] = $parsed . ' ' . $this->parse_order( $_order );
}
$orderby = empty( $ordersby ) ? 'comment_date_gmt' : implode(', ', $ordersby);
// If no valid clauses were found, order by comment_date_gmt.
if ( empty( $orderby_array ) ) {
$orderby_array[] = "$wpdb->comments.comment_date_gmt $order";
}
// To ensure determinate sorting, always include a comment_ID clause.
if ( ! $found_orderby_comment_ID ) {
$comment_ID_order = '';
// Inherit order from comment_date or comment_date_gmt, if available.
foreach ( $orderby_array as $orderby_clause ) {
if ( preg_match( '/comment_date(?:_gmt)*\ (ASC|DESC)/', $orderby_clause, $match ) ) {
$comment_ID_order = $match[1];
break;
}
}
// If no date-related order is available, use the date from the first available clause.
if ( ! $comment_ID_order ) {
foreach ( $orderby_array as $orderby_clause ) {
if ( false !== strpos( 'ASC', $orderby_clause ) ) {
$comment_ID_order = 'ASC';
} else {
$comment_ID_order = 'DESC';
}
break;
}
}
// Default to DESC.
if ( ! $comment_ID_order ) {
$comment_ID_order = 'DESC';
}
$orderby_array[] = "$wpdb->comments.comment_ID $comment_ID_order";
}
$orderby = implode( ', ', $orderby_array );
} else {
$orderby = 'comment_date_gmt';
$orderby = "$wpdb->comments.comment_date_gmt $order";
}
$number = absint( $this->query_vars['number'] );
@ -709,12 +753,11 @@ class WP_Comment_Query {
$join = "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID";
}
if ( ! empty( $this->meta_query->queries ) ) {
$clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this );
$join .= $clauses['join'];
if ( ! empty( $meta_query_clauses ) ) {
$join .= $meta_query_clauses['join'];
// Strip leading 'AND'.
$where[] = preg_replace( '/^\s*AND\s*/', '', $clauses['where'] );
$where[] = preg_replace( '/^\s*AND\s*/', '', $meta_query_clauses['where'] );
if ( ! $this->query_vars['count'] ) {
$groupby = "{$wpdb->comments}.comment_ID";
@ -729,7 +772,7 @@ class WP_Comment_Query {
$where = implode( ' AND ', $where );
$pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits', 'groupby' );
$pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );
/**
* Filter the comment query clauses.
*
@ -744,7 +787,6 @@ class WP_Comment_Query {
$join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
$where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
$orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
$order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : '';
$limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
$groupby = isset( $clauses[ 'groupby' ] ) ? $clauses[ 'groupby' ] : '';
@ -757,7 +799,7 @@ class WP_Comment_Query {
}
if ( $orderby ) {
$orderby = "ORDER BY $orderby $order";
$orderby = "ORDER BY $orderby";
}
$this->request = "SELECT $fields FROM $wpdb->comments $join $where $groupby $orderby $limits";
@ -809,6 +851,88 @@ class WP_Comment_Query {
return ' AND (' . implode(' OR ', $searches) . ')';
}
/**
* Parse and sanitize 'orderby' keys passed to the comment query.
*
* @since 4.2.0
* @access protected
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $orderby Alias for the field to order by.
* @return string|bool Value to used in the ORDER clause. False otherwise.
*/
protected function parse_orderby( $orderby ) {
global $wpdb;
$allowed_keys = array(
'comment_agent',
'comment_approved',
'comment_author',
'comment_author_email',
'comment_author_IP',
'comment_author_url',
'comment_content',
'comment_date',
'comment_date_gmt',
'comment_ID',
'comment_karma',
'comment_parent',
'comment_post_ID',
'comment_type',
'user_id',
);
if ( ! empty( $this->query_vars['meta_key'] ) ) {
$allowed_keys[] = $this->query_vars['meta_key'];
$allowed_keys[] = 'meta_value';
$allowed_keys[] = 'meta_value_num';
}
$meta_query_clauses = $this->meta_query->get_clauses();
if ( $meta_query_clauses ) {
$allowed_keys = array_merge( $allowed_keys, array_keys( $meta_query_clauses ) );
}
$parsed = false;
if ( $orderby == $this->query_vars['meta_key'] || $orderby == 'meta_value' ) {
$parsed = "$wpdb->commentmeta.meta_value";
} else if ( $orderby == 'meta_value_num' ) {
$parsed = "$wpdb->commentmeta.meta_value+0";
} else if ( in_array( $orderby, $allowed_keys ) ) {
if ( isset( $meta_query_clauses[ $orderby ] ) ) {
$meta_clause = $meta_query_clauses[ $orderby ];
$parsed = sprintf( "CAST(%s.meta_value AS %s)", esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) );
} else {
$parsed = "$wpdb->comments.$orderby";
}
}
return $parsed;
}
/**
* Parse an 'order' query variable and cast it to ASC or DESC as necessary.
*
* @since 4.2.0
* @access protected
*
* @param string $order The 'order' query variable.
* @return string The sanitized 'order' query variable.
*/
protected function parse_order( $order ) {
if ( ! is_string( $order ) || empty( $order ) ) {
return 'DESC';
}
if ( 'ASC' === strtoupper( $order ) ) {
return 'ASC';
} else {
return 'DESC';
}
}
}
/**

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.2-alpha-31466';
$wp_version = '4.2-alpha-31467';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.