Using subquery for update in Yii2 ActiveRecord - php

Question

Is it possible to use subquery when updating an ActiveRecord?
I have a products table with following columns
id number_of_orders
1 3
2 3
3 2
and an items table
id product_id
1 1
2 1
3 1
4 2
5 2
6 2
7 3
8 3
What I want is
UPDATE products
SET number_of_orders = (
SELECT COUNT(id) FROM items WHERE product_id = 1
)
WHERE id = 1
I have tried
$subquery = ItemsModel::find()
->select('COUNT(id)')
->where(['product_id' => 1]);
ProductsModel::updateAll(
[
'number_of_orders' => $subquery
],
[
'id' => 1
]
);
and
$product = ProductsModel::findOne(1);
$product->number_of_orders = $subquery;
$product->save();
but none of this going to work.
Does anyone have any idea about solving this problem?
Conclusion:
Each of the two ways works very well after I updated to yii 2.0.14.

Answer 1

Try update Yii to the last version. Since 2.0.14 all instances of yii\db\ExpressionInterface (including Query and ActiveQuery) should be handled properly and generate SQL in similar way as yii\db\Expression. So all this should work in Yii 2.0.14 or later:
$subquery = ItemsModel::find()
->select('COUNT(id)')
->where(['product_id' => 1])
ProductsModel::updateAll(
['number_of_orders' => $subquery],
['id' => 1]
);
$product = ProductsModel::findOne(1);
$product->number_of_orders = $subquery;
$product->save();
ProductsModel::updateAll(
['number_of_orders' => new Expression('SELECT COUNT(id) FROM items WHERE product_id = 1')],
['id' => 1]
);
Last example should work also in earlier versions of Yii.

Answer 2

You can use count() to get number of records.
$itemCount = ItemsModel::find()
->where(['product_id' => 1]);
->count();
$product = ProductsModel::findOne(1);
$product->number_of_orders = $itemCount;
$product->save();

Answer 3

i would prefer:
$model = ProductsModel::findOne(1);
$model->updateAttributes(['number_of_orders' => ItemsModel::find()->where(['product_id' => 1])->count()]);
or you can do
$query = Yii::$app->db
->createCommand(sprintf('UPDATE %s SET number_of_orders=(SELECT COUNT(*) FROM %s WHERE product_id=:id) WHERE id=:id', ProductsModel::tableName(), ItemsModel::tableName()), [':id' => $id, ])
->execute();
ps: if both tables are the same, you have to do:
$query = Yii::$app->db
->createCommand(sprintf('UPDATE %s SET number_of_orders=(SELECT * FROM (SELECT COUNT(*) FROM %s WHERE product_id=:id) xxx) WHERE id=:id', ProductsModel::tableName(), ItemsModel::tableName()), [':id' => $id, ])
->execute();