public function update(TestResultRequest $request, $id)
 {
     $user = User::findOrFail($request->input('row_id'));
     $test = Test::findOrFail($id);
     $result = TestResult::where('user_id', $user->id)->where('test_id', $test->id);
     $score = $request->input('value');
     if ($result->count()) {
         if (!empty($score)) {
             $result->update(['score' => $score]);
         } else {
             $result->delete();
         }
     } else {
         TestResult::create(['user_id' => $user->id, 'test_id' => $test->id, 'score' => $score]);
     }
     return $request->input('value');
 }
 /**
  * Update the specified resource in storage.
  *
  * @param TestRequest $request
  * @param  int $id
  *
  * @return Response
  */
 public function update(TestRequest $request, $id)
 {
     Test::findOrFail($id)->update($request->all());
     return redirect(action('TestController@index'));
 }