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Allow `LIKE` queries against the 'key' value in meta queries. 

The new `compare_key=LIKE` parameter works in conjunction with `key` in a
similar way to the `compare=LIKE` and `value`: by doing a "compares" `LIKE`
query. This allows developers to do partial matches against keys when
doing meta queries.

Props mariovalney, chasewg.
Fixes #42409.
Built from https://develop.svn.wordpress.org/trunk@42768


git-svn-id: http://core.svn.wordpress.org/trunk@42598 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Boone Gorges 2018-03-01 04:03:33 +00:00
parent d2d64f13c7
commit 35ad9e9efc
3 changed files with 37 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
wp-includes/class-wp-meta-query.php
View File

@ -99,6 +99,7 @@ class WP_Meta_Query {
*
* @since 3.2.0
* @since 4.2.0 Introduced support for naming query clauses by associative array keys.
* @since 5.0.0 Introduced $compare_key clause parameter, which enables LIKE key matches.
*
* @param array $meta_query {
* Array of meta query clauses. When first-order clauses or sub-clauses use strings as
@ -110,6 +111,8 @@ class WP_Meta_Query {
* Optional. An array of first-order clause parameters, or another fully-formed meta query.
*
* @type string $key Meta key to filter by.
* @type string $compare_key MySQL operator used for comparing the $key. Accepts '=' and 'LIKE'.
* Default '='.
* @type string $value Meta value to filter by.
* @type string $compare MySQL operator used for comparing the $value. Accepts '=',
* '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE',
@ -236,7 +239,7 @@ class WP_Meta_Query {
* the rest of the meta_query).
*/
$primary_meta_query = array();
foreach ( array( 'key', 'compare', 'type' ) as $key ) {
foreach ( array( 'key', 'compare', 'type', 'compare_key' ) as $key ) {
if ( ! empty( $qv[ "meta_$key" ] ) ) {
$primary_meta_query[ $key ] = $qv[ "meta_$key" ];
}
@ -518,7 +521,14 @@ class WP_Meta_Query {
$clause['compare'] = '=';
}
if ( isset( $clause['compare_key'] ) && 'LIKE' === strtoupper( $clause['compare_key'] ) ) {
$clause['compare_key'] = strtoupper( $clause['compare_key'] );
} else {
$clause['compare_key'] = '=';
}
$meta_compare = $clause['compare'];
$meta_compare_key = $clause['compare_key'];
// First build the JOIN clause, if one is required.
$join = '';
@ -533,7 +543,12 @@ class WP_Meta_Query {
if ( 'NOT EXISTS' === $meta_compare ) {
$join .= " LEFT JOIN $this->meta_table";
$join .= $i ? " AS $alias" : '';
if ( 'LIKE' === $meta_compare_key ) {
$join .= $wpdb->prepare( " ON ($this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key LIKE %s )", '%' . $wpdb->esc_like( $clause['key'] ) . '%' );
} else {
$join .= $wpdb->prepare( " ON ($this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key = %s )", $clause['key'] );
}
// All other JOIN clauses.
} else {
@ -576,10 +591,14 @@ class WP_Meta_Query {
if ( array_key_exists( 'key', $clause ) ) {
if ( 'NOT EXISTS' === $meta_compare ) {
$sql_chunks['where'][] = $alias . '.' . $this->meta_id_column . ' IS NULL';
} else {
if ( 'LIKE' === $meta_compare_key ) {
$sql_chunks['where'][] = $wpdb->prepare( "$alias.meta_key LIKE %s", '%' . $wpdb->esc_like( trim( $clause['key'] ) ) . '%' );
} else {
$sql_chunks['where'][] = $wpdb->prepare( "$alias.meta_key = %s", trim( $clause['key'] ) );
}
}
}
// meta_value.
if ( array_key_exists( 'value', $clause ) ) {

2
wp-includes/class-wp-query.php
View File

@ -604,6 +604,7 @@ class WP_Query {
* Introduced `RAND(x)` syntax for `$orderby`, which allows an integer seed value to random sorts.
* @since 4.6.0 Added 'post_name__in' support for `$orderby`. Introduced the `$lazy_load_term_meta` argument.
* @since 4.9.0 Introduced the `$comment_count` parameter.
* @since 5.0.0 Introduced the `$meta_compare_key` parameter.
*
* @param string|array $query {
* Optional. Array or string of Query parameters.
@ -640,6 +641,7 @@ class WP_Query {
* @type int $m Combination YearMonth. Accepts any four-digit year and month
* numbers 1-12. Default empty.
* @type string $meta_compare Comparison operator to test the 'meta_value'.
* @type string $meta_compare_key Comparison operator to test the 'meta_key'.
* @type string $meta_key Custom field key.
* @type array $meta_query An associative array of WP_Meta_Query arguments. See WP_Meta_Query.
* @type string $meta_value Custom field value.

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.0-alpha-42767';
$wp_version = '5.0-alpha-42768';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.