One-to-many relationship on “bay_mb_relationships”

Hi,

If you want to force only one connection from one side of a relationship, please set 'max_clone' => 1 to the field on that side, like this:

add_action( 'mb_relationships_init', function () {
    MB_Relationships_API::register(
        array(
            'id'   => 'workout_to_workout_exercises',
            'from' => array(
                'object_type' => 'post',
                'post_type' => 'workout',
                'field' => array(
                    'max_clone' => 1, // Limit to 1 connection only.
                ),
            ),
            'to'   => array(
                'object_type' => 'post',
                'post_type' => 'workout_exercises',
            ),
        )
    );
} );

Thank you for your kind words and your feedback. We keep improving the plugin and will try our best to make it more useful for you!