public function actionView($id = null)
{
if (!$id) {
return $this->render('/site/error', ['name' => 'Bad request', 'message' => 'id is not defined']);
}
$message['class'] = '';
$message['text'] = '';
$model = new TeacherStudent();
$dataProvider = Teacher::find()->where(['id' => (int) $id]);
if ($model->load(Yii::$app->request->post()) && $model->validate()) {
if (TeacherStudent::find()->where(['teacher_id' => $model->teacher_id, 'student_id' => $model->student_id])->count() == 0) {
$result = $model->save();
} else {
$message['class'] = 'danger';
$message['text'] = 'Ошибка. Пользователь с id ' . $model->student_id . ' уже назначен учителю с id ' . $model->teacher_id . '.';
}
if (isset($result) && $result === true) {
$message['class'] = 'success';
$message['text'] = 'Ваш запрос успешно выполнен. Пользователь с id ' . $model->student_id . ' назначен учителю с id ' . $model->teacher_id . '.';
}
}
return $this->render('view', ['dataProvider' => $dataProvider, 'model' => $model, 'message' => $message]);
}
/**
* Add students to teacher
*/
public function saveTeachers()
{
$this->removeTeachers();
if (!empty($this->teachers)) {
foreach ($this->teachers as $val) {
if (is_numeric($val)) {
$t_u = new TeacherStudent();
$t_u->student_id = $this->id;
$t_u->teacher_id = $val;
$t_u->save();
}
}
}
$this->_teachers = ArrayHelper::map($this->teacherStudents, 'name', 'id');
}
/**
* @return \yii\db\ActiveQuery
*/
public function getTeacherStudents()
{
return $this->hasMany(TeacherStudent::className(), ['student_id' => 'id']);
}
