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Source View: postmeta_form_keys

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Source View

Line Code
671       *
672       * Returning a non-null value will effectively short-circuit and avoid a
673       * potentially expensive query against postmeta.
674       *
675       * @since 4.4.0
676       *
677       * @param array|null $keys Pre-defined meta keys to be used in place of a postmeta query. Default null.
678       * @param WP_Post    $post The current post object.
679       */
680      $keys = apply_filters( 'postmeta_form_keys', null, $post );
681
682      if ( null === $keys ) {
683           /**
684            * Filters the number of custom fields to retrieve for the drop-down
685            * in the Custom Fields meta box.
686            *
687            * @since 2.1.0
688            *
689            * @param int $limit Number of custom fields to retrieve. Default 30.