/**
  * Add a student query
  *
  * @param Request $request
  * @return mixed
  */
 public function addStudentQuery(Request $request)
 {
     $this->validate($request, ['courseCode' => 'required', 'description' => 'required|max:5000']);
     $query = ['rollNo' => Auth::guard('student')->user()->rollNo, 'courseCode' => $request['courseCode'], 'description' => $request['description']];
     // Add the query to database
     StudentQuery::create($query);
     return redirect()->back();
 }
 /**
  * Resolve a student query
  *
  * @param Request $request
  * @return mixed
  */
 public function resolveStudentQuery(Request $request)
 {
     $rollNo = $request['rollNo'];
     $courseCode = $request['courseCode'];
     $created_at = $request['created_at'];
     $response = $request['response'];
     // Resolve the query
     StudentQuery::where(['rollNo' => $rollNo, 'courseCode' => $courseCode, 'created_at' => $created_at])->update(['response' => $response]);
     return redirect()->back();
 }