ACF Relationship Field Custom Query

• Jude

• July 2, 2019 at 1:04 pm

I’m using WP_Query arguments to output the results orderby title. But, if none of relationship were selected, it outputs all posts. How can I solve this?

<?php 
        $ids = get_field('courses_offered', false, false);
        $posts = get_field('courses_offered');

        $the_query = new WP_Query(array(
          'post__in'        => $ids,
          'post_type'       => 'courses',
          'posts_per_page'  => -1,
          'post_status'     => 'any',
          'orderby'         => 'title',
          'order'           => 'ASC',
        ));

        if ( $the_query->have_posts() ) : while ( $the_query->have_posts() ) : $the_query->the_post();
        ?>