$data = Input::all();
     $test = $data['test_id'];
     $user = $data['user_id'];
     $grade = Calificacion::where('id_evaluacion', '=', $test)->where('id_usuario', '=', $user)->get();
     return Response::json($grade);
 });
 // POST /api/grade
 Route::post('grade', function () {
     $data = Input::all();
     $test = $data['test_id'];
     $user = $data['user_id'];
     $grade = $data['grade'];
     $attemps = $data['attemps'];
     $course = $data['course_id'];
     $date = $data['date'];
     Calificacion::insert(array('id_usuario' => $user, 'id_evaluacion' => $test, 'nota' => $grade, 'fecha' => $date, 'id_curso' => $course, 'intentos' => $attemps));
     return 0;
 });
 // PUT /api/grade
 Route::put('grade', function () {
     $data = Input::all();
     $test = $data['test_id'];
     $user = $data['user_id'];
     $grade = $data['grade'];
     $attemps = $data['attemps'];
     $date = $data['date'];
     Calificacion::where('id_evaluacion', '=', $test)->where('id_usuario', '=', $user)->update(array('nota' => $grade, 'intentos' => $attemps, 'fecha' => $date));
     return 0;
 });
 // /api/test/{test_id}
 Route::get('test/{test_id}', function ($test_id) {