/** * Sets restriction rules for fields. * * @since 1.0.0 * * @param GP_Validation_Rules $rules The validation rules instance. */ public function restrict_fields($rules) { $rules->name_should_not_be('empty'); $rules->slug_should_not_be('empty'); $rules->locale_should_not_be('empty'); $rules->project_id_should_not_be('empty'); }