/**
*/
public function actionPopulateclassdivisions()
{
ClassDivision::deleteAll();
$classes = AClass::find()->all();
$groups = [];
foreach ($classes as $class) {
$key = join('|', [$class->room_id, $class->day_id, $class->type_id, $class->frequency_id, $class->start_time]);
//echo $key . ': ' . $class->fullName . PHP_EOL;
if (!isset($groups[$key])) {
$groups[$key] = [];
}
$groups[$key][] = $class;
}
foreach ($groups as $key => $group) {
$classId = null;
foreach ($group as $class) {
// use the ID of the first class in the group for all of them
if (null === $classId) {
$classId = $class->id;
}
$cd = new ClassDivision();
$cd->class_id = $classId;
$cd->division_id = $class->division_id;
if (!$cd->save()) {
echo $key . ' failed to save' . PHP_EOL;
}
}
}
}
/**
* @return \yii\db\ActiveQuery
*/
public function getClassDivisions()
{
return $this->hasMany(ClassDivision::className(), ['division_id' => 'id']);
}
