/**
  * Toggle the active column on the specified resource from storage.
  *
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function toggle($id)
 {
     $productVariant = Product_variant::find($id);
     $productVariant->active = $productVariant->active ? 0 : 1;
     return $productVariant->save() ? response()->json(['success' => true, 'active' => $productVariant->active]) : response()->json(['success' => false], 422);
 }