我有分类表:
CategoryID CategoryName ParentID
1 Root Null
2 News 1
3 Horoscope 1
4 Sports 2
5 National 2
6 Daily 3
7 Aries 6
8 Weekly 3
9 Aries 8
我正在尝试创建树结构的json数据,如下所示:
[{
"id":1,
"text":"Root",
"children":[{
"id":2,
"text":"News",
"state":"closed",
"children":[{
"id":4,
"text":"Sports"
},{
"id":5,
"text":"National"
}]
},{
"id":3,
"text":"Horoscope",
"children":[{
"id":6,
"text":"Daily",
"children":[{
"id":7,
"text":"Aries"
}],
},{
"id":8,
"text":"Weekly",
"children":[{
"id":9,
"text":"Aries"
}],
}
}]
}]
我有以下函数来呈现所有类别和子类别
public function categoryData($parent)
{
$model=new Category();
$cat=$model->findAllByAttributes(array('ParentCategoryID'=>$parent,'Status'=>2));
$category = array();
foreach($cat as $record)
{
global $category;
$category['id'][$record->CategoryID] = $record->CategoryID;
$category['text'][$record->CategoryID] = $record->CategoryName;
// $category['children'][$record->CategoryID] = array();
//$names[] = $record->CategoryName;
$this->categoryData($record->CategoryID);
}
//array_push($category['children'][$record->ParentCategoryID], $category['children'][$record->CategoryID]);
return $category;
}
问题:
但是上面的操作没有以适当的格式将category放入数组中,因此我可以通过应用json encode($category)函数创建上面的json数据格式。
如何在树型结构数组中使用递归函数放置类别数据?
最佳答案
将public $children = array()
属性添加到Category
模型中。然后循环结果并在父数组中设置引用:
$categories = Category::model()->findAll(array('index'=>'id'));
foreach($categories as $category)
$categories[ $category->id_parent ]->children[] = $category;
echo json_encode($categories);
关于php - 使用递归函数使用php数组为树结构数据创建json数据,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/16120892/