easyUI官方组合树ComboTree代码：
- !DOCTYPE html>
- <html>
- <head>
- <meta charset="UTF-8">
- <title>Basic ComboTree - jQuery EasyUI Demo</title>
- <link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css">
- <link rel="stylesheet" type="text/css" href="../../themes/icon.css">
- <link rel="stylesheet" type="text/css" href="../demo.css">
- <script type="text/javascript" src="../../jquery.min.js"></script>
- <script type="text/javascript" src="../../jquery.easyui.min.js"></script>
- </head>
- <body>
- <h2>Basic ComboTree</h2>
- <p>Click the right arrow button to show the tree panel.</p>
- <div style="margin:20px 0"></div>
- <input class="easyui-combotree" data-options="url:'tree_data1.json',method:'get',required:true" style="width:200px;">
- </body>
- </html>
tree_data1.json：
[{
"id":1,
"text":"My Documents",
"children":[{
"id":11,
"text":"Photos",
"state":"closed",
"children":[{
"id":111,
"text":"Friend"
},{
"id":112,
"text":"Wife"
},{
"id":113,
"text":"Company"
}]
},{
"id":12,
"text":"Program Files",
"children":[{
"id":121,
"text":"Intel"
},{
"id":122,
"text":"Java",
"attributes":{
"p1":"Custom Attribute1",
"p2":"Custom Attribute2"
}
},{
"id":123,
"text":"Microsoft Office"
},{
"id":124,
"text":"Games",
"checked":true
}]
},{
"id":13,
"text":"index.html"
},{
"id":14,
"text":"about.html"
},{
"id":15,
"text":"welcome.html"
}]
}]
思路：想要实现动态加载，必须从数据库返回具有父子层级关系的数据格式，(涉及到三级菜单以上的话要使用多级关联查询，)才能正确显示。
数据表Xzq：id,name,parentId （菜单为自关联）
1，中国，0
2，安徽，1
3，浙江，1
Thinkphp代码实现：
模型层：
<?php
namespace HomeModel;
use ThinkModelRelationModel;
class XzqModel extends RelationModel{
protected $_link = array(
'children' =>array(
'mapping_type' => self::HAS_MANY, //关联关系
'class_name' => 'Category', //要关联的模型类名
'parent_key' => 'parentId', //自引用关联的关联字段
'mapping_fields'=>'id,name as text,parentId', //关联要查询的字段
'relation_deep'=>true, //支持多级查询设置
)
);
控制器：
$result=$category->field('id,name as text')->relation(true)
->where('companyUserId='.session('id').' and parentId=0')->select();
这样得到的关联数组即是一个符合easyUI组合树ComboTree要求的数据格式。