mysql - 通过一条查询删除CAKEPHP 3中所有关联表的数据

Question

我有一个表 products 和一些通过 Product_id 与其连接的表。当产品从产品表中删除时，我想从所有其他表中删除此product_id 的所有行。现在怎样才能以方便的方式做到这一点呢？ 我正在尝试如下:

$productTable = [
        'related_products',
        'quantities',
        'products_tags',
        'products_settings',
        'products_details',
        'categories_products',
    ];
    $tableObj = TableRegistry::get('Products');
    $query = $tableObj->query();
    $result = $query->deleteAll()
        ->contain($productTable)
        ->where(['store_id' => $storeId])
        ->execute();

Answer 1

在 Cakephp 中，有一个依赖属性可以从其他表中删除关联的数据。

When the dependent key is set to true, and an entity is deleted, the associated model records are also deleted. In this case we set it to true so that deleting a User will also delete her associated Address.

要使用此功能，只需创建您的关联并添加dependent true。例如

/* In a Table's initialize method. */
$this->hasMany('Comments', [
    'dependent' => true,  /* Add this line */
]);

Cake -> Associations - Linking Tables Together