Filtering custom posts by post object field

• demonipuch

• June 28, 2018 at 7:42 pm

Hello, I’m working on a website where I registered 2 custom post types : artist and release. I’ve created a bi-directional post object field : related. I’ve also added custom columns for each post type.

Custom fields for the post type artist :

Custom fields for the post type release :

Artist admin page :

Release admin page :

I’ve managed to filter artists by the column “Origin”

Here is the code I used to filter the artists by origin :

function meta_key_filter( $query ) {

		if( isset( $_GET['post_type'] ) ) {
			$post_type = $_GET['post_type'];
		}

		if( $query->is_admin && isset( $_GET['origin'] ) && $post_type === 'artist' ) {
			$origin = $_GET['origin'];
			$meta_key_query = array(
				array(
					'key' => 'origin',
					'value' => $origin,
					'compare' => 'LIKE',
				)
			);
			$query->set( 'meta_query', $meta_key_query );
		}
		return $query;

 }
}
add_action( 'pre_get_posts', 'meta_key_filter' );

What I’d like to achieve is filtering releases by the column “Artist” but I can’t figure out to do so.

Any advise?

• blaasvaer

• September 20, 2019 at 5:30 pm

I’m facing the exact same issue of not being able to filter by ANY custom post type. Have you figured anything out in relation to this that you’d like to share?