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Bulk Action for Updating Bidirectional Relationships

  • Hello,
    I have a relationship field with a group and several post types, all of which share this same field. By using the below example, I was able to add bidirectional relations to saving the post.

    However, a large portion of the posts will be imported, and thought the import plugin creates the relation between Post A and Post B, to create the association between Post B and Post A, I would have to go to either and “save” the post.

    To avoid this task, I would like to create a custom bulk action that will use the same ACF example but in a bulk manner.
    Bellow is the skeleton code. Can you please advise if this is possible? All my attempts in doing so have failed. The update_field always returns true, but no update occurs.

    add_filter( 'bulk_actions-edit-people', 'custom_rel_update_bulk_action' );
    function custom_rel_update_bulk_action( $bulk_array ) {
    	$bulk_array['bulk_update_rels'] = 'Update Relationships';
    	return $bulk_array;
    add_filter( 'handle_bulk_actions-edit-people', 'custom_rel_update_bulk_action_handler', 10, 3 );
    function custom_rel_update_bulk_action_handler( $redirect, $doaction, $object_ids ) {
    	// let's remove query args first
    	$redirect = remove_query_arg( array( 'bulk_update_rels_done' ), $redirect );
    	// do something for "Make Draft" bulk action
    	if ( $doaction == 'bulk_update_rels' ) {
    		foreach ( $object_ids as $post_id ) {
    		// do not forget to add query args to URL because we will show notices later
    		$redirect = add_query_arg(
    			'bulk_update_rels_done', // just a parameter for URL (we will use $_GET['bulk_update_rels_done'] )
    			count( $object_ids ), // parameter value - how much posts have been affected
    		$redirect );
    	return $redirect;
    add_action( 'admin_notices', 'bulk_update_rels_notices' );
    function bulk_update_rels_notices() {
    	// first of all we have to make a message,
    	// of course it could be just "Posts updated." like this:
    	if ( ! empty( $_REQUEST['bulk_update_rels_done'] ) ) {
    		echo '<div id="message" class="updated notice is-dismissible">
    			<p>Posts updated.</p>

    Advanced Custom Fields PRO 5.9.1

    Thank you very much

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