CakePHP：使用包含查找关联数据

Question

我正在阅读 CakePHP 文档，但我不确定是否需要使用 find 以外的其他方法。示例：

在我的控制器中，我想提供Orders 的过滤列表，其中相关表OrderStates 的state 字段为“打开”：

$orders = $this->ItemsDeliveryNotes->Orders->find('list', [
    'limit' => 200, 
    'conditions' => ['Orders.order_state.state' => 'Open'],
    'contain' => ['OrderStates']
]);

但是它说它没有找到order_state 列。 这里是表Orders的定义：

创造

CREATE TABLE orders (
    id int(11) NOT NULL AUTO_INCREMENT,
    customer_id int(11),
    orderNumber varchar(255) NOT NULL,
    orderDate date,
    order_state_id int(11),
    PRIMARY KEY (id),
    KEY order_state_id (order_state_id),
    CONSTRAINT orders_ibfk_1 FOREIGN KEY (customer_id) REFERENCES customers (id) ON DELETE NO ACTION ON UPDATE NO ACTION,
    CONSTRAINT orders_ibfk_2 FOREIGN KEY (order_state_id) REFERENCES order_states (id) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;

实体

class Order extends Entity
{
    protected $_accessible = [
        'orderNumber' => true,
        'orderDate' => true,
        'customer_id' => true,
        'order_state_id' => true,
        'customer' => true,
        'order_state' => true,
        'items' => true
    ];
}

表格

public function initialize(array $config)
{
    parent::initialize($config);

    $this->setTable('orders');
    $this->setDisplayField('orderNumber');
    $this->setPrimaryKey('id');

    $this->belongsTo('Customers', [
        'foreignKey' => 'customer_id'
    ]);
    $this->belongsTo('OrderStates', [
        'foreignKey' => 'order_state_id'
    ]);
    $this->hasMany('Items', [
        'foreignKey' => 'order_id'
    ]);
}

public function buildRules(RulesChecker $rules)
{
    $rules->add($rules->existsIn(['order_state_id'], 'OrderStates'));
    $rules->add($rules->existsIn(['customer_id'], 'Customers'));

    return $rules;
}

和OrderStates:

创造

CREATE TABLE order_states (
 id int(11) NOT NULL AUTO_INCREMENT,
 state varchar(255) NOT NULL,
 badge varchar(255) DEFAULT NULL,
 PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8

实体

class OrderState extends Entity
{
    protected $_accessible = [
        'state' => true,
        'badge' => true
    ];
}

表格

public function initialize(array $config)
{
    parent::initialize($config);

    $this->setTable('order_states');
    $this->setDisplayField('state');
    $this->setPrimaryKey('id');
}

order_state 列可在 Orders 中访问，我还将相关表 (OrderStates) 添加到 contain 选项。我还想念什么？

Answer 1

这里使用的有效语法：

$orders = $this->ItemsDeliveryNotes->Orders->find('list', [ 'limit' => 200 ])
    ->contain('OrderStates')->where(['state' => 'Open']);

Answer 2

@标记包含实体的条件中的问题。请确认您使用的是哪个 cakephp 版本。

这里是使用contained table条件的示例

传递条件以包含

// Prior to 3.5.0 you would use contain(['Comments' => function () { ... }])

$query = $articles->find()->contain('Comments', function (Query $q) {
    return $q
        ->select(['body', 'author_id'])
        ->where(['Comments.approved' => true]);
});

注意：确保您已将 use Cake\ORM\Query; 包含在命名空间部分中。

有关更多详细信息，您可以参考此处的文档。 https://book.cakephp.org/3.0/en/orm/retrieving-data-and-resultsets.html#passing-conditions-to-contain

你的情况可能是这样的。

$orders = $this->ItemsDeliveryNotes->Orders->find('list', [ 'limit' => 200 ])->contain('OrderStates', function (Query $q) { return $q->where(['state' => 'Open']); });