route('truck'); $truckId = $truck instanceof Truck ? $truck->id : $truck; return [ 'plate_number' => [ 'required', 'string', 'max:16', Rule::unique('trucks', 'plate_number')->ignore($truckId)->whereNull('deleted_at'), ], 'model' => ['nullable', 'string', 'max:100'], 'capacity_kg' => ['nullable', 'integer', 'min:0'], 'status' => ['nullable', Rule::in([Truck::STATUS_ACTIVE, Truck::STATUS_MAINTENANCE, Truck::STATUS_RETIRED])], 'notes' => ['nullable', 'string', 'max:1000'], ]; } }