public function postGetAllSubjectsBySectionId(Request $request)
 {
     $section_id = $request->input('section_id');
     $input = ['section_id' => $section_id];
     $validator = validator::make($request->all(), ['section_id' => 'required']);
     if ($validator->fails()) {
         return ApiResponseClass::errorResponse('You Have Some Input Errors. Please Try Again!!', $input, $validator->errors());
     } else {
         $subjects = Subjects::where('section_id', $section_id)->get();
         return ApiResponseClass::successResponse($subjects, $input);
     }
     return ApiResponseClass::errorResponse('There is Something Wrong. Please Try Again!!', $input);
 }