Question

表

    Tables

 Product        Plan            ProductPlan
 id |name       id |name        id  | product_id | plan_id     
 1    aplha      1   a          1        1          2             
 2    bravo      2   b          2        4          c   
 3    charlie    4   c   
 4    delta

我想根据它的相关ID查看数据，例如，如果产品有两个计划，它将在该产品的列表中。像那样

      alpha  |  delta   |  
       a          c
       b

查看代码

  <table>
<thead>
    <tr>
        <?php foreach ($p as $ps){?>
        <th>
            <?php echo __l($ps['Product']['name']);?>
        </th>
        <?php }?>
    </tr>   
</thead>    
    <tbody>
        <?php foreach ($p as $p1){
                foreach($p1['Plan'] as $plan){
                        debug($plan);
        ?>
        <tr>
            <td>
                <?php echo __l($plan['name']);?>    
            </td>
        </tr>           
        <?php }
                    }?>

    </tbody>

当我调试$ p1数组时，

 array(
'Product' => array(
    'product_id' => '1',
    'name' => 'Event Manager',
    'slug' => 'event-manager',
    'is_visible' => true
),
'Plan' => array(
    (int) 0 => array(
        'plan_id' => '1',
        'name' => 'FREE',
        'description' => '30 Days Trial',
        'amount' => '0.00',
        'expiry_days' => '30',
        'created' => '2012-01-12 16:51:21',
        'modified' => '2012-01-12 16:51:22',
        'PlansProduct' => array(
            'plan_product_id' => '1',
            'product_id' => '1',
            'plan_id' => '1'
        )
    ),
    (int) 1 => array(
        'plan_id' => '2',
        'name' => 'BRONZE',
        'description' => '60 Days Trial',
        'amount' => '10.00',
        'expiry_days' => '60',
        'created' => '2012-01-12 16:52:24',
        'modified' => '2012-01-12 16:52:25',
        'PlansProduct' => array(
            'plan_product_id' => '2',
            'product_id' => '1',
            'plan_id' => '2'
        )
    )
)

）

我该怎么做？提前谢谢。

Answer 1

我是否理解“产品有很多计划和计划有很多产品”（多对多）（http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#hasandbelongstomany-habtm）。在这种情况下，您必须在模型中声明此关系。

//models/product.php
class Product extends AppModel{
    public $hasAndBelongsToMany = array(
        'Plan' =>
            array(
                'className'              => 'Plan',
                'joinTable'              => 'ProductPlan',
                'foreignKey'             => 'id',
                'associationForeignKey'  => 'id',
                'unique'                 => true,
                'conditions'             => '',
                'fields'                 => '',
                'order'                  => '',
                'limit'                  => '',
                'offset'                 => '',
                'finderQuery'            => '',
                'deleteQuery'            => '',
                'insertQuery'            => ''
            )
    );
}

如果关系是“一对多”，则声明如下：

class Product extends AppModel {
    public $hasMany = array(
        'Plan' => array(
            'className'     => 'Plan',
            'foreignKey'    => 'product_id'
        )
    );
}

您需要将名为“product_id”的外键添加到“计划”表中。

Answer 2

你必须从控制器传递三个变量。这些变量包含三个不同的表数据。

比需要时使用。

如何在cakephp中查看与其关联的id的数据？

2 个答案: