如何在树中显示嵌套数据? [英] How do I show nested data into a tree?

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问题描述

进一步进展。请参阅 http://www.sencha.com/forum/showthread.php?153986-Empty-column-something-I-can-t-get-with-Ext。 data.TreeStore-and-or-Ext.tree.Panel



我总是感谢任何进一步的建议。






我正在尝试开发一个简单的extJS Ext 4.0.2a脚本,将一些嵌套数据显示为Drag& Drop树。
要尝试,我使用一个简单的例子从 http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader



数据以users.json文件形式给出:

  {
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树,其第一级节点是用户,第二级节点是订单,等等。



从同一个文档,我学习如何定义我的模型(我相信):

  Ext.define(User,{
扩展:'Ext.data.Model',
fields:[
'id','name'
],

hasMany:{model:'Order' ,名称:'orders'},

proxy:{
type:'ajax',// rest
url:'users.json',
reader: {
type:'json',
root:'users'
}
}
})

;

Ext.define(Order,{
extends:'Ext.data.Model',
fields:[
'id','total'
],

hasMany:{model:'OrderItem',name:'orderItems',associationKey:'order_items'},
belongsTo:'User'
}) ;

Ext.define(OrderItem,{
extends:'Ext.data.Model',
fields:[
'id','price' 'number','order_id','product_id'
],

belongsTo:['Order',{model:'Product',associationKey:'product'}]
});

Ext.define(Product,{
extends:'Ext.data.Model',
fields:[
'id','name'
],

hasMany:'OrderItem'
});

接下来,我定义树存储和树面板(对于某些选定的字段):

  var store = Ext.create('Ext.data.TreeStore',{
model:'User',
autoLoad:true,
autoSync:true,
root:{
name:Root node,
id:'0',
expanded:true
},
分类:[{
属性:'id',
direction:'ASC'// DESC
}]
});

var tree = Ext.create('Ext.tree.Panel',{
store:store,
displayField:'name',//什么节点显示(default- > text)
列:[{
xtype:'treecolumn',
text:'name',
dataIndex:'name',
width:
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
}],
可折叠:true,
viewConf ig:{
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',
项目:[{
文本:全部展开,
处理程序:function(){
tree.expandAll();
}
},{
文本:'全部折叠',
处理程序:function(){
tree.collapseAll();
}
}]
}]
});
});

我看到面板,根和第一级用户(作为根的子节点)。我看不到任何子节点(orders,order_items等)。



我仔细看了一些帖子,改进了很多东西,但仍然想念得到一个工作的解决方案。

解决方案

我正面对同样的任务,首先很高兴遇到你的帖子!
经过5个小时的正式文件浏览:





我能够填充我的嵌套树存储没有什么比这更好:



(在我的情况下,主要模型是Camgroup它有许多相机作为凸轮:允许为每个组使用.cams())

  Ext.define('AV .store.sCamgroups',{
extends:'Ext.data.TreeStore',
model:'AV.model.Camgroup',
autoLoad:true,
root:{
展开:true,
文本:分组相机
},
代理:{
类型:'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返回smth这样:

  {
success:true,
camgroups:[{
id:group1,
name:外观摄像头,
cam:[{
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
}]
}]
}

希望这个将帮助您,不断寻找一个更好的解决方案(概念定义适当的读者)。



再次,在Ext.data.reader.Reader中,我可以看到Reader具有config属性implicitIncludes,这被认为是自动解析嵌套在o中的模型反应对象中的其他模型,但是我不能使其工作=(



干杯,
Ilya


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

I always appreciate any further advise.


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

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"
                        }
                    }
                ]
            }
        ]
    }
]
}

I wish to display data as a tree, whose first level nodes are users, second level nodes are orders, and so on.

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'
});

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();
                }
            }]
        }]
    });
});

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).

I looked carefully at a number of posts, improved things quite a lot, but still miss to get a working solution.

解决方案

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:

I was able to populate my nested treestore with nothing better than this:

(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 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
        }]
    }]
}

Hope this will help you though keep looking for a better solution (prob defining a proper reader).

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 =(

Cheers, Ilya

这篇关于如何在树中显示嵌套数据?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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