Question

我使用PRAGMA foreign_keys = ON在SQLITE中启用了外键;并确认它在下面工作。

sqlite> PRAGMA foreign_keys = ON;
sqlite> CREATE TABLE transactions (
   ...>     id integer primary key,
   ...>     amount REAL,
   ...>     item TEXT,
   ...>     created DATETIME,
   ...>     modified DATETIME,
   ...>     date DATE,
   ...>     time TIME,
   ...>     description TEXT,
   ...>     transaction_type_id INTEGER,
   ...>     category_id INTEGER,
   ...>     account_id INTEGER,
   ...>     location_id INTEGER,
   ...>     FOREIGN KEY (transaction_type_id) REFERENCES transaction_types(id),
   ...>     FOREIGN KEY (category_id) REFERENCES categories(id),
   ...>     FOREIGN KEY (account_id) REFERENCES accounts(id),
   ...>     FOREIGN KEY (location_id) REFERENCES locations(id)
   ...> );
sqlite> INSERT INTO transactions VALUES (null, '5.0', 'test', '2013-06-11 18:33:56', '2013-06-11 18:33:56', '2013-06-11', '18:33:00', 'test description', 2, 1, 2, 1);
sqlite> SELECT * FROM categories;
1|fsfs|2013-06-11 18:33:38|2013-06-11 18:33:38
sqlite> SELECT * FROM transactions JOIN categories ON transactions.category_id=categories.id;
4|5.0|test|2013-06-11 18:33:56|2013-06-11 18:33:56|2013-06-11|18:33:00|test description|2|1|2|1|1|fsfs|2013-06-11 18:33:38|2013-06-11 18:33:38
sqlite> DELETE FROM categories WHERE id=1;
Error: foreign key constraint failed
sqlite>

但是，当我尝试通过CakePHP执行此操作时，我没有获得有关外键约束的错误，并且该类别已被删除。以下是我的交易和类别模型。

Transaction.php：

class Transaction extends AppModel {
    public $belongsTo = array('Location', 'TransactionType', 'Category', 'Account');
....

Category.php：

class Category extends AppModel {
    public $hasMany = array('Transaction', 'Budget'); 
....

我在CategoriesController.php中对Category的删除功能是通过组件功能完成的，它们如下所示。

CategoriesController.php - ＆gt;删除

public function delete($id) {
    $this->Crud->delete($this, $id, "Category");
}

CrudComponent.php - ＆gt;删除

public function delete($current, $id, $modelName) {
    $className = strtolower(Inflector::humanize($modelName));
    if ($current->request->is('get')) {
        throw new MethodNotAllowedException();
    }

    if ($current->$modelName->delete($id)) {
        $current->Session->setFlash('The '.$className.' with id: ' . $id . ' has been deleted.');
        $current->redirect(array('action' => 'index'));
    }
}

我认为我的关联设置得很好，因为我没有检索数据的问题。但是，删除时不遵守外键。

我怀疑这与必须运行＆＃34; PRAGMA foreign_keys = ON＆＃34;每次CakePHP连接到数据库，但我不知道如何做到这一点。或者我的模型定义和关联可能有问题。

我使用CakePHP版本2.3.5和Sqlite3版本3.7.13。

任何帮助将不胜感激！谢谢:)）

在CakePHP中启用Sqlite3的外键支持

0 个答案: