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 find() 的 Joins 选项并在我的数组中获取正确的信息，但是我需要它以不同的方式显示。
我的控制器动作：
function showlist() {
$this->Category->recursive = -1;
$options['joins'] = array(
array('table' => 'items',
'alias' => 'Item',
'type' => 'left',
'foreignKey' => false,
'conditions' => array(
'Item.category_id = Category.id'
)
),
array('table' => 'items_users',
'alias' => 'Grocery',
'type' => 'left',
'foreignKey' => false,
'conditions' => array(
'Grocery.item_id = Item.id'
)
)
);
$options['conditions'] = array(
'Grocery.user_id' => $this->Auth->user('id')
);
$options['fields'] = array(
'Category.*', 'Item.*', 'Grocery.*'
);
$categories = $this->Category->find('all', $options);
$this->set('categories', $categories);
}
这有效，但现在它只显示平坦。我需要它在嵌套数组中显示一个类别的所有项目。
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。
新代码
控制器：
function showlist() {
$this->Category->recursive = -1;
$options['joins'] = array(
array('table' => 'items',
'alias' => 'Item',
'type' => 'left',
'foreignKey' => false,
'conditions' => array(
'Item.category_id = Category.id'
)
),
array('table' => 'items_users',
'alias' => 'Grocery',
'type' => 'left',
'foreignKey' => false,
'conditions' => array(
'Grocery.item_id = Item.id'
)
)
);
$options['conditions'] = array(
'Grocery.user_id' => $this->Auth->user('id')
);
$options['fields'] = array(
'Category.*', 'Item.*'
);
$options['contain'] = array(
'Item'
);
$categories = $this->Category->find('all', $options);
$this->set('categories', $categories);
}
结果数组：
Array
(
[0] => Array
(
[Category] => Array
(
[id] => 31
[parent_id] =>
[name] => Cereal
[lft] => 21
[rght] => 22
)
[Item] => Array
(
[id] => 23
[name] => Granola Bars
[category_id] => 31
[description] =>
[user_id] =>
[0] => Array
(
[id] => 23
[name] => Granola Bars
[category_id] => 31
[description] =>
[user_id] =>
)
[1] => Array
(
[id] => 44
[name] => Fiber Bars
[category_id] => 31
[description] =>
[user_id] =>
)
)
)
[1] => Array
(
[Category] => Array
(
[id] => 15
[parent_id] => 27
[name] => Household
[lft] => 31
[rght] => 32
)
[Item] => Array
(
[id] => 24
[name] => Cleaning Cloths
[category_id] => 15
[description] =>
[user_id] =>
[0] => Array
(
[id] => 24
[name] => Cleaning Cloths
[category_id] => 15
[description] =>
[user_id] =>
)
[1] => Array
(
[id] => 25
[name] => Air Freshener
[category_id] => 15
[description] =>
[user_id] =>
)
[2] => Array
(
[id] => 28
[name] => Paper Towels
[category_id] => 15
[description] =>
[user_id] =>
)
)
)
[2] => Array
(
[Category] => Array
(
[id] => 15
[parent_id] => 27
[name] => Household
[lft] => 31
[rght] => 32
)
[Item] => Array
(
[id] => 25
[name] => Air Freshener
[category_id] => 15
[description] =>
[user_id] =>
[0] => Array
(
[id] => 24
[name] => Cleaning Cloths
[category_id] => 15
[description] =>
[user_id] =>
)
[1] => Array
(
[id] => 25
[name] => Air Freshener
[category_id] => 15
[description] =>
[user_id] =>
)
[2] => Array
(
[id] => 28
[name] => Paper Towels
[category_id] => 15
[description] =>
[user_id] =>
)
)
)
[3] => Array
请注意它是如何在直接在类别下的项目下再次包含项目的。直接在类别下显示的项目是我想要的，它包含在杂货列表中。find() 现在返回我正在寻找的项目下的数组中顶级类别中的所有项目。
另一个问题是 cake 没有对同一类别的项目进行分组。因此，如果空气清新剂和纸巾在同一个杂货清单上，它们就不会出现在同一个类别中，该类别将被列出两次。