Question

我有几个嵌套模型，我试图使用CakePHP中的Containable行为加载。大多数工作正常。

但是，1个具有hasMany关系的模型只返回1个对象：

$article = $this->News->find('first',array(
    'conditions'=>array('News.id'=>$id),
    'contain' =>  array(
        'Newslayout', 
        'Newspicture'=> array(
            'NewspicturesProduct' => array(
                'Product' => array(
                    'Brand',
                    'Category'
                )
        )))
    ));

只加载一次的对象是关系Newspicture hasMany NewspicturesProduct 当我记录查询时，我得到以下内容：

SELECT `NewspicturesProduct`.`id`, `NewspicturesProduct`.`x`, `NewspicturesProduct`.`y`, `NewspicturesProduct`.`product_id`, `NewspicturesProduct`.`newspicture_id`, `NewspicturesProduct`.`w`, `NewspicturesProduct`.`h` FROM `edclondon`.`newspictures_products` AS `NewspicturesProduct` WHERE `NewspicturesProduct`.`newspicture_id` = 3

这给了我phpMyAdmin的3个结果。但在CakePHP的调试中只有1个：

'Newspicture' => array(
        (int) 0 => array(
            'id' => '3',
            'news_id' => '2',
            'newspicture_file_path' => '5022443f-ddf8-4115-ae57-618e9d60b047.jpg',
            'newspicture_file_size' => '1232546',
            'order' => null,
            'NewspicturesProduct' => array(
                'id' => '1',
                'x' => '0.180664',
                'y' => '0.295312',
                'product_id' => '3',
                'newspicture_id' => '3',
                'w' => '0.286133',
                'h' => '0.478125',
                'Product' => array(
                    'id' => '3',
                    //....
                    'Brand' => array(
                        'id' => '6',
                        //...
                    ),
                    'Category' => array(
                        'id' => '6',
                        //....
                    )
                )
            )
        )

检索Newspictures对象而不是检索News对象时，我会获得所有3个NewspicturesProduct个对象。

Answer 1

在我看来，您显示的查询对应的代码应为：

$article = $this->News->find('first',array(
'contain' =>  array(
    'Newslayout', 
    'Newspicture'=> array(
        'NewspicturesProduct' => array(
            'conditions'=>array('NewspicturesProduct.newspicture_id'=>'3')
            'Product' => array(
                'Brand',
                'Category'
            )
    )))
));

而不是你给的那个......

Answer 2

您似乎需要来自NewspicturesProduct的3条记录。如果是那么你可以尝试：

$article = $this->News->find('first',array(
'contain' =>  array(
    'Newslayout', 
    'Newspicture'=> array(
        'NewspicturesProduct' => array(
            'conditions'=>array(
                             'limit'=> 3
                         ),
            'Product' => array(
                'Brand',
                'Category'
            )
    )))
));

可容纳的嵌套模型

2 个答案: