我有树结构和产品表的类别表。我想在列表上显示。当用户点击父类别时,我想要显示此类别的所有产品以及此类别的子类别的产品。
public function listing($catid = null, $slug = null)
{
$this->viewBuilder()->layout('frontview');
$this->loadModel('Categories');
$this->loadModel('Products');
$categoryid=$this->Categories->find('children',['for'=>$catid]);
$catarray=array();
foreach($categoryid as $c) {
$catarray[]=$c['categoryId'];
}
debug($catarray);
$products=$this->Products->find()
->where(function ($exp, $q) {
return $exp->in('categories_id',$catarray); //line 81
});
$this->set('products',$products);
}
$ catarray的调试是
[
(int) 0 => (int) 6,
(int) 1 => (int) 7,
(int) 2 => (int) 8,
(int) 3 => (int) 9,
(int) 4 => (int) 10,
(int) 5 => (int) 11,
(int) 6 => (int) 12
]
错误:注意事项(8):未定义的变量:catarray [APP / Controller \ CategoriesController.php,第81行]
错误:无法使用字段(categories_id)的空值列表生成条件
答案 0 :(得分:0)
如Sevvlor所说,你必须做
function ($exp, $q) uses(catarray)
但您也可以简化代码:
$categoryid=$this->Categories->find('children',['for'=>$catid]);
$catarray = $categoryid->extract('categoryId');
$products=$this->Products->find()
->where(['category_id IN' => $catarray]);