cakephp - CakePHP 包含条件不限制结果？

Question

我正在尝试在分类列表中查找用户的杂货。关联是 Category hasMany Item hasMany User through Grocery。我正在使用 Containable Behavior，它没有过滤掉所有其他 Grocery。它基本上返回每个项目。

我的控制器功能：

function showlist() {
$categories = $this->Category->find('all', array(
    'contain' => array(
        'Item' => array(
            'Grocery' => array(
                'conditions' => array(
                    'Grocery.user_id =' => $this->Auth->user('id')
                )
            )
        )
    )
));

返回的数组：

Array
(
    [0] => Array
        (
            [Category] => Array
                (
                    [id] => 10
                    [parent_id] => 
                    [name] => Dairy
                    [lft] => 1
                    [rght] => 6
                )

            [Item] => Array
                (
                )

        )

[1] => Array
    (
        [Category] => Array
            (
                [id] => 11
                [parent_id] => 10
                [name] => Milk
                [lft] => 2
                [rght] => 3
            )

        **[Item] => Array
            (
            )**

    )

[2] => Array
    (
        [Category] => Array
            (
                [id] => 12
                [parent_id] => 10
                [name] => Cheese
                [lft] => 4
                [rght] => 5
            )

        [Item] => Array
            (
            )

    )

[3] => Array

我不想返回下面没有 Grocery(ItemUser) 的任何 Item 数组。

---

这有效，但现在它只显示平坦。我需要它来显示该嵌套数组中某一类别的所有项目。

它显示：

Array
(
[0] => Array
    (
        [Category] => Array **<--This could be the same category as**
            (...)

        [Item] => Array
            (...)

        [Grocery] => Array
            (...)
    )
[1] => Array
    (
        [Category] => Array **<--This**
            (...)

        [Item] => Array
            (...)

        [Grocery] => Array
            (...)
    )
[2]...

我需要它是：

Array
(
[0] => Array
    (
        [Category] => Array 
            (...
            [Item] => Array
            (...)

            [Item] => Array
            (...)
            )
    )
[1] => Array
    (
        [Category] => Array
            (...)

        [Item] => Array
            (...)
    )
[2]...

甚至不需要 Grocery 数组，只需通过它们搜索条件即可。

Answer 1

You cannot limit your main Model's results based on conditions within the Contain. When you use contain(), it actually creates multiple queries - that keeps you from being able to limit based on contained conditions.

To resolve this, you need to use JOINs [ see CakePHP Joining Tables ] instead of contain.

Answer 2

If you want nested formatting, could you move all this to another (e.g Groceries) controller which would allow you to limit by user_id or (but I have to admit that I'm not sure whether this is good Cake practice, although I have successfully used this approach...in 1.3 anyway) something along the lines of:

$groceries = $this->Category->Item->Grocery->find('all', array(
    'conditions' => array(
         Grocery.user_id =' => $this->Auth->user('id')
    )
));