requirement()->update(['requirement_group_id'=>null]); } /** * Handle the RequirementGroup "deleted" event. */ public function deleted(RequirementGroup $requirementGroup): void { // } /** * Handle the RequirementGroup "restored" event. */ public function restored(RequirementGroup $requirementGroup): void { // } /** * Handle the RequirementGroup "force deleted" event. */ public function forceDeleted(RequirementGroup $requirementGroup): void { // } }