public function destroy($id)
 {
     $collection = Collection::find($id);
     $user = Auth::user();
     if ($collection->created_by == $user['id']) {
         $result = Collection::destroy($id);
         return response()->json(['status' => 'success', 'data' => $result]);
     } else {
         return response()->json(['status' => 'failed', 'message' => 'could not delete']);
     }
 }