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Query: Allow the prefix used for search term exclusion to be filtered.

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[38792] allowed `WP_Query`'s hyphen-as-exclusion-prefix feature to be
disabled via filter. A more general solution is to allow the prefix to
be filtered; returning an empty value from a filter callback works to
disable the feature.

Props dlh.
Fixes #38099.

git-svn-id: https://develop.svn.wordpress.org/trunk@38844 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Boone Gorges
2016-10-20 18:41:22 +00:00
parent 993d6fb898
commit 12c72a7906
2 changed files with 44 additions and 16 deletions
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27
src/wp-includes/class-wp-query.php
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@@ -721,9 +721,9 @@ class WP_Query {
* @type array $post_name__in An array of post slugs that results must match.
* @type string $s Search keyword(s). Prepending a term with a hyphen will
* exclude posts matching that term. Eg, 'pillow -sofa' will
* return posts containing 'pillow' but not 'sofa'. This feature
* can be disabled using the
* 'wp_query_use_hyphen_for_exclusion' filter.
* return posts containing 'pillow' but not 'sofa'. The
* character used for exclusion can be modified using the
* the 'wp_query_search_exclusion_prefix' filter.
* @type int $second Second of the minute. Default empty. Accepts numbers 0-60.
* @type bool $sentence Whether to search by phrase. Default false.
* @type bool $suppress_filters Whether to suppress filters. Default false.
@@ -1322,27 +1322,28 @@ class WP_Query {
$q['search_orderby_title'] = array();
/**
* Filters whether search terms preceded by hyphens should excluded from results.
* Filters the prefix that indicates that a search term should be excluded from results.
*
* @since 4.7.0
*
* @param bool Whether the query should exclude terms preceded with a hyphen.
* @param string $exclusion_prefix The prefix. Default '-'. Returning
* an empty value disables exclusions.
*/
$hyphen_exclusion = apply_filters( 'wp_query_use_hyphen_for_exclusion', true );
$exclusion_prefix = apply_filters( 'wp_query_search_exclusion_prefix', '-' );
foreach ( $q['search_terms'] as $term ) {
// Terms prefixed with '-' should be excluded.
$include = '-' !== substr( $term, 0, 1 );
if ( $include || ! $hyphen_exclusion ) {
$like_op = 'LIKE';
$andor_op = 'OR';
} else {
// If there is an $exclusion_prefix, terms prefixed with it should be excluded.
$exclude = $exclusion_prefix && ( $exclusion_prefix === substr( $term, 0, 1 ) );
if ( $exclude ) {
$like_op = 'NOT LIKE';
$andor_op = 'AND';
$term = substr( $term, 1 );
} else {
$like_op = 'LIKE';
$andor_op = 'OR';
}
if ( $n && $include ) {
if ( $n && ! $exclude ) {
$like = '%' . $wpdb->esc_like( $term ) . '%';
$q['search_orderby_title'][] = $wpdb->prepare( "{$wpdb->posts}.post_title LIKE %s", $like );
}