link two custom post types together using a taxonomy as a go between

gistfile1.txt

	/*===========================================================================
	LINK EVENT LOCATION TAXONOMY AND POST TYPE
	===========================================================================*/

	function action__transition_post_status( $new_status, $old_status, $post ) {

		// make sure we actually have an event object
		if ( null === ( $post = get_post( $post ) ) || 'event_loc' !== $post->post_type ) {
			return;
		}

		if ( in_array( $new_status, array( 'publish', 'draft', 'future') ) ) {
			wp_create_term( $post->post_name, 'event_loc' );
		} elseif ( $term_id = term_exists( $post->post_name, 'event_loc' ) ) {
			wp_delete_term( $term_id, 'event_loc' );
		}
	}
	add_action( 'transition_post_status', __NAMESPACE__ . '\action__transition_post_status', 10, 3 );

	//todo change "name" of term if title of post changes
	//todo handle slug changes too