1

I’m trying to set up some post permissions using taxonomies and I'm applying my rules in a pre_get_posts action.

It’s working fine when multiple posts are found, but in class-wp-query.php near line 2060, it’s specifically not applying the tax_query rules when is_singular is true.

Is there a way around this without modifying core?

  • See this question, it has two solutions. Also, there was a ticket on the WordPress Trac which was set to wontfix. – Max Yudin Jun 8 '18 at 8:21
  • please share your code – honk31 Jun 8 '18 at 13:27
  • What tax_query do you want to use exactly? Could you show your code? – Krzysiek Dróżdż Jul 30 '18 at 12:42
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You can always use posts_clauses filter and add processing for tax_query in there (you don't even need to write your own SQL):

function filter_single_with_tax_queries( $clauses, $query ) {
    global $wpdb;

    if ( $query->is_singular ) {  
        $query->parse_tax_query( $query->query_vars );
        $tax_clauses = $query->tax_query->get_sql( $wpdb->posts, 'ID' );
        $clauses['join'] .= $tax_clauses['join'];
        $clauses['where'] .= $tax_clauses['where'];
    }
    return $parts;
}
add_action( 'posts_clauses', 'filter_single_with_tax_queries', 10, 2 );

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