如何将嵌套数据显示到树中? [英] How do I show nested data into a tree?
问题描述
Further progress. Please see at http://www.sencha.com/forum/showthread.php?153986-Empty-column-something-I-can-t-get-with-Ext.data.TreeStore-and-or-Ext.tree.Panel
我总是很感激任何进一步的建议.
I always appreciate any further advise.
我正在尝试开发一个简单的 extJS Ext 4.0.2a 脚本，以将一些嵌套数据显示为拖放树.为了尝试，我使用了一个来自 http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader
I am trying to develop a simple extJS Ext 4.0.2a script to display some nested data as a Drag&Drop tree. To try, I use a simple example from http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader
数据以 users.json 文件的形式给出:
Data are given as a users.json file:
{
"users": [
{
"id": 123,
"name": "Ed",
"orders": [
{
"id": 50,
"total": 100,
"order_items": [
{
"id" : 20,
"price" : 40,
"quantity": 2,
"product" : {
"id": 1000,
"name": "MacBook Pro"
}
},
{
"id" : 21,
"price" : 20,
"quantity": 3,
"product" : {
"id": 1001,
"name": "iPhone"
}
}
]
}
]
}
]
}
我希望将数据显示为一棵树，其一级节点为用户，二级节点为订单，依此类推.
I wish to display data as a tree, whose first level nodes are users, second level nodes are orders, and so on.
从同一个文档中，我学习了如何定义我的模型(我相信):
From the same doc, I learn how to define my models (I believe):
Ext.define("User", {
extend: 'Ext.data.Model',
fields: [
'id', 'name'
],
hasMany: {model: 'Order', name: 'orders'},
proxy: {
type: 'ajax', // rest
url : 'users.json',
reader: {
type: 'json',
root: 'users'
}
}
})
;
Ext.define("Order", {
extend: 'Ext.data.Model',
fields: [
'id', 'total'
],
hasMany : {model: 'OrderItem', name: 'orderItems', associationKey: 'order_items'},
belongsTo: 'User'
});
Ext.define("OrderItem", {
extend: 'Ext.data.Model',
fields: [
'id', 'price', 'quantity', 'order_id', 'product_id'
],
belongsTo: ['Order', {model: 'Product', associationKey: 'product'}]
});
Ext.define("Product", {
extend: 'Ext.data.Model',
fields: [
'id', 'name'
],
hasMany: 'OrderItem'
});
接下来，我定义了一个树存储和一个树面板(对于一些选定的字段):
next, I define a tree store and a tree panel (for some selected fields):
var store = Ext.create('Ext.data.TreeStore', {
model: 'User',
autoLoad: true,
autoSync: true,
root: {
name: "Root node",
id: '0',
expanded: true
},
sorters: [{
property: 'id',
direction: 'ASC' // DESC
}]
});
var tree = Ext.create('Ext.tree.Panel', {
store: store,
displayField: 'name', // what nodes display (default->text)
columns: [{
xtype: 'treecolumn',
text: 'name',
dataIndex: 'name',
width: 150,
sortable: true
}, {
text: 'total',
dataIndex: 'total',
width: 150,
flex: 1,
sortable: true
}, {
text: 'price',
dataIndex: 'price',
width: 50,
flex: 1,
sortable: true
},{
text: 'quantity',
dataIndex: 'quantity',
width: 150,
flex: 1
}, {
text: 'id',
dataIndex: 'id',
flex: 1,
width: 15,
sortable: true
}],
collapsible: true,
viewConfig: {
plugins: {
ptype: 'treeviewdragdrop', // see Ext.tree.plugin.TreeViewDragDrop
nodeHighlightColor : '7B68EE',
nodeHighlightOnDrop : true,
nodeHighlightOnRepair: true,
enableDrag: true,
enableDrop: true
}
},
renderTo: 'tree-div',
height: 300,
width: 900,
title: 'Items',
useArrows: true,
dockedItems: [{
xtype: 'toolbar',
items: [{
text: 'Expand All',
handler: function(){
tree.expandAll();
}
}, {
text: 'Collapse All',
handler: function(){
tree.collapseAll();
}
}]
}]
});
});
我看到面板、根和第一级用户(作为根的子节点).我没有看到任何子节点(订单、订单项等).
I see the panel, the root and the first level users (as subnodes of the root). I do not see any subnodes (orders, order_items and so on).
我仔细查看了一些帖子，改进了很多，但仍然没有找到可行的解决方案.
I looked carefully at a number of posts, improved things quite a lot, but still miss to get a working solution.
推荐答案
我面临同样的任务，首先很高兴遇到您的帖子！经过 5 个小时的探索官方文档后:
I am facing the same task, and first was glad to run into your post! After 5 hours of exploring the official docs regarding to it:
- http://docs.sencha.com/ext-js/4-0/#!/guide/data
- http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader
我能够用比这更好的东西填充我的嵌套树存储:
I was able to populate my nested treestore with nothing better than this:
(在我的例子中，主要模型是 Camgroup，其中有许多相机作为cams":它允许对每个组使用 .cams())
(in my case the main model is Camgroup which hasMany Camera as 'cams': which allows to use .cams() for every group)
Ext.define('AV.store.sCamgroups', {
extend: 'Ext.data.TreeStore',
model: 'AV.model.Camgroup',
autoLoad: true,
root: {
expanded: true,
text: "Grouped Cameras"
},
proxy: {
type: 'ajax',
url: 'data/camgroups.json',
reader: {
type: 'json',
root: 'camgroups',
successProperty: 'success'
}
},
listeners: {
load: function(thisStore, rootnode, records, successful, eOpts){
records.forEach(function(group){
group.cams().each(function(cam) {
group.appendChild({
text: cam.get('name'),
leaf: true
});
});
});
}
}
});
camgroups.json 像这样返回:
camgroups.json returns smth like this:
{
success: true,
camgroups: [{
"id" : "group1",
"name" : "Exterior cams",
"cams" : [{
"id" : "cam3",
"name" : "Camera three",
"url" : "...",
"img" : "images/cams/3.png",
"ratio" : 1.33
},{
"id" : "cam4",
"name" : "Camera four",
"url" : "...",
"img" : "images/cams/4.png",
"ratio" : 1.33
}]
}]
}
希望这能帮助您继续寻找更好的解决方案(可能定义一个合适的阅读器).
Hope this will help you though keep looking for a better solution (prob defining a proper reader).
同样，在Ext.data.reader.Reader"中，我可以看到 Reader 具有配置属性implicitIncludes"，它应该自动解析嵌套在响应对象中其他模型中的模型"，但我无法使其工作=(
Again, in "Ext.data.reader.Reader" I can see that Reader has config property 'implicitIncludes' which is supposed 'to automatically parse models nested within other models in a response object', but I cannot make it working =(
干杯，伊利亚
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