Directory search should match paper tags

[boonebgorges]

cc @samradd

[r-a-y]

Hmm, I don't think we can add a conditional tax_query clause to WP_Query, can we?

[boonebgorges]

Not really. Clauses of WP_Query are implicitly linked by 'AND'. (Wouldn't it be nice to have WP_Meta_Query etc syntax for WP_Query? Future Release :-D ) As things stand, t'd have to look something like this (maybe in a 'pre_get_posts' callback):

if ( $q->get( 's' ) ) {
    $search_posts = get_posts( array( 's' => $search_terms ) );
    $search_tags = get_posts( array( 'tax_query' => whatever ) );

    $q->set( 's', '' );
    $q->set( 'post__in', array_merge( $search_posts, $search_tags ) );
}

Pretty lousy, and it doesn't do any weighting, but I think it's the only reliable way.