|string> */ public function rules(): array { return [ 'branch_name' => ['required','string','exists:branches,name'], 'room_name' => ['required','string'], 'command' => ['required','in:active,closed,fire,error'], 'started_at'=> ['nullable','date_format:Y-m-d H:i:s'], 'ended_at' => ['nullable','date_format:Y-m-d H:i:s'], ]; } }