| 1 | <?php |
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| 2 | /** |
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| 3 | * Provides post_parent__in and __not_in support. |
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| 4 | * |
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| 5 | * Will noop when implemented in core, assuming the query vars |
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| 6 | * are added to WP::$private_query_vars. |
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| 7 | */ |
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| 8 | function nacin_post_parent__in( $where, $object ) { |
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| 9 | global $wpdb, $wp; |
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| 10 | if ( in_array( 'post_parent__in', $wp->private_query_vars ) ) |
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| 11 | return $where; |
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| 12 | |
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| 13 | if ( is_numeric( $object->query_vars['post_parent'] ) ) |
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| 14 | return $where; |
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| 15 | if ( ! empty( $object->query_vars['post_parent__in'] ) ) { |
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| 16 | $post_parent__in = implode(',', array_map( 'absint', $object->query_vars['post_parent__in'][0] ) ); |
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| 17 | $where .= " AND $wpdb->posts.post_parent IN ($post_parent__in)"; |
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| 18 | } elseif ( ! empty( $object->query_vars['post_parent__not_in'] ) ) { |
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| 19 | $post_parent__not_in = implode(',', array_map( 'absint', $object->query_vars['post_parent__not_in'][0] ) ); |
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| 20 | $where .= " AND $wpdb->posts.post_parent NOT IN ($post_parent__not_in)"; |
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| 21 | } |
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| 22 | return $where; |
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| 23 | } |
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| 24 | add_filter( 'posts_where', 'nacin_post_parent__in', 10, 2 ); |
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