javascript - 使用 TreeStore 和 TreePanel 更正 JSON 和模型

Question

我有一个来自服务器端的 JSON 字符串:

{"success":"true","total":"6","list":
  [{"id":"1","name":"folder1","parentid":"null","type":"0"},
   {"id":"2","name":"r1","parentid":"1","type":"1"},
   {"id":"3","name":"folder2","parentid":"1","type":"0"},
   {"id":"4","name":"r2","parentid":"3","type":"1"},
   {"id":"5","name":"r3","parentid":"null","type":"1"},
   {"id":"6","name":"folder3","parentid":"null","type":"0"}]}

如何将它变成一棵树？谁能建议我如何获取列表中的元素(id、name、parentid、type)？

Answer 1

我使用了以下结构:

型号

Ext.define('MyApp.model.MyTreeModel', {
    extend: 'Ext.data.Model',
    fields: [
         'someStringIdentifier',
         'children',
         'dataForThisNode',
    ],
});

商店

Ext.define('MyApp.store.MyTreeStore', {
    extend: 'Ext.data.TreeStore',
    model: 'MyApp.model.MyTreeModel',
    storeId: 'cubeDynamicStoreId',
    autoLoad: false,

    proxy: {
        type: 'ajax',
        api: {
            read : '/myapp/rest/myquery',
        },
        reader: {
            type: 'json',
            root: 'children',
            successProperty: 'success',
            idProperty: 'id',
        },
    },

    // bug in extjs4.1 autoLoad is ignored
    // specifying "loaded: true" resolves the problem
    root: {
        expanded: true,
        loaded: true,
    },
});

示例 JSON(使用 http://jsonviewer.stack.hu/ 可视化)

使用叶属性在任何节点停止扩展

{"children":{"leaf":false,"someStringIdentifier":"Total","dataForThisNode":{},"children":[{"leaf":true,"someStringIdentifier":"data1","dataForThisNode":{},"children":[{"leaf":false,"someStringIdentifier":"2012","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2013","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2014","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2015","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2016","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2017","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2018","dataForThisNode":{},"children":null}]},{"leaf":true,"someStringIdentifier":"data2","dataForThisNode":{},"children":[{"leaf":false,"someStringIdentifier":"2012","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2013","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2014","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2015","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2016","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2017","dataForThisNode":{},"children":null},{"leaf":false,"someStringIdentifier":"2018","dataForThisNode":{},"children":null}]}]},"success":true}