public function actionIndex() { $data['state'] = State::find()->indexBy('s_id')->asArray()->all(); $data['Faculty'] = Institution::getCurrentFaculty(); $data['level'] = EducationLevel::find()->indexBy('el_id')->asArray()->all(); $data['course'] = Course::find()->indexBy('course_id')->asArray()->all(); return $this->render('index', $data); }