Yii2 Cannot insert attribute(FK) with id(PK) - php

Question

i have id there is PK(Auto Inc) from models/order relation with FK id_order from models/preorder, In my CRUD action for example actionCreate, i can't insert attibutes preorder to table because id(PK) from order always null. how do i fix this ?.
here's my controller
$cartPositions = Yii::$app->cart->getPositions();
if (!$cartPositions or $cartPositions === null) {
return $this->redirect(['index']);
}
$dataProvider = new ArrayDataProvider([
'allModels' => $cartPositions,
]);
$model = new Order();
$model_po = new Preorder();
$postData = Yii::$app->request->post();
if ($model->load($postData) && $model_po->load($postData)) {
//model->save(false);
$model->status = 5;
$model_po->id_order = $model->id;
$model->total_cost = Yii::$app->cart->getCost();
$model->date = date('Y-m-d H:i');
$model->data = Yii::$app->cart->getSerialized();
$model_po->name = $model->name;
$model_po->phone = $model->phone;
$model_po->remarks = $model->message;
$model_po->created_at = $model->date;
//$model_po->save();
if (Model::validateMultiple([$model, $model_po]) && $model->save(false) && $model_po->save()) {
Yii::$app->session->setFlash('success', 'Thank You');
Yii::$app->mailer->compose('order/html', [
'model' => $model,
//'model_po' => $model_po,
'dataProvider' => $dataProvider,
])
//->setFrom(Yii::$app->params['email']['from'])
// ->setTo(Yii::$app->params['email']['to'])
// ->setSubject('The site posted a new order')
// ->send();
->setFrom(Yii::$app->params['email']['from'])
->setTo(Yii::$app->params['email']['to'])
->setSubject('The site posted a new Preorder')
->send();
Yii::$app->cart->removeAll();
return $this->render('orderSuccess', [
'model' => $model,
//'model_po' => $model_po,
]);
}
} else
{return $this->render('create_po', [
'model' => $model,
'model_po' => $model_po,
'dataProvider' => $dataProvider,
]);}
}
models/order
public function rules()
{
return [
[['status', 'total_cost', 'date', 'data', 'name', 'phone'], 'required'],
[['code_order'], 'autonumber', 'format'=>'orderNum', 'digit'=>4],
[['status', 'total_cost'], 'integer'],
[['date'], 'safe'],
[['data', 'message'], 'string'],
[['name', 'email', 'phone'], 'string', 'max' => 255]
];
}
model/preorders
public function rules()
{
return [
[['id_order', 'address'], 'required'],
[['id_order'], 'integer'],
[['created_at', 'updated_at'], 'safe'],
[['address', 'remarks'], 'string', 'max' => 500],
[['id_order'], 'exist', 'skipOnError' => true, 'targetClass' => Order::className(), 'targetAttribute' => ['id_order' => 'id']],
];
}
error info :
Integrity constraint violation – yii\db\IntegrityException
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'id_order' cannot be null
The SQL being executed was: INSERT INTO preorder (address, id_order, name, phone, remarks, created_at) VALUES ('', NULL, 'Name', '121324325', '', '2016-07-23 17:01')
Error Info: Array
(
[0] => 23000
[1] => 1048
[2] => Column 'id_order' cannot be null
i was try getPrimaryKey() and last insert id() not work and i was try to remove $modelpo->id_order = $model->id the result is two tables filled but id_order is 0

Answer 1

$model->id is null until successful $model->save() so you should not assign its value to $model_po->id_order before that.
This is a good place for transaction so you can validate data first, then make sure Order is saved and then save Preorder with proper id_order.
Take a look at link() method as well.

Answer 2

why don't you use afterSave()? it will definetely solve your problem