Ext.data.GroupingStore
继承自Ext.data.Store,为Store增加了分组功能.其它用法与Store一致,惟一需要注意的是使用GroupingStore时必须指定sortInfo信息
增加了配置属性
groupField : String//用于分组的字段
groupOnSort : Boolean//如果为真,将依排序字段重新分组,默认为假
remoteGroup : Boolean//远程排序
当然也会多一个group方法
groupBy( String field,[Boolean forceRegroup] ) : void
顾名思义都是重新排序用的
下面是个简单的示例
var arr=[ [1,'本','拉登'],[2,'笨',[3,'拉灯'] ];
var reader = new Ext.data.ArrayReader(
{id: 0},
[
{name: 'name',mapping: 1},
{name: 'occupation',mapping: 2}
]);
var store=new Ext.data.GroupingStore( {
reader:reader,
groupField:'name',
groupOnSort:true,
sortInfo: {field: 'occupation',direction: "ASC"} //使用GroupingStore时必须指定sortInfo信息
});
store.loadData(arr);
//GridPanel以后会讨论,这儿使用它是为了直观的表现GroupingStore
var grid = new Ext.grid.GridPanel( {
ds: store,
columns: [
{header: "name",width: 20,sortable: true,dataIndex: 'name'},
{header: "occupation",dataIndex: 'occupation'}
],
view: new Ext.grid.GroupingView( {
forceFit:true,
groupTextTpl: '{text} ({[values.rs.length]} {[values.rs.length > 1 ? "Items" : "Item"]})'
}),
frame:true,
width: 700,
height: 450,
collapsible: true,
animCollapse: false,
title: 'Grouping Example',
renderTo: 'Div_GridPanel'
});
Ext.data.JsonStore
也是Store子类,目标是更方便的使用json对象做数据源
构造中多了fields,root,用法如下例所示
/*
这是使用远程对象,返回内容与下面本地对象的data一致
var store=new Ext.data.JsonStore({
url:'jsoncallback.js',
root:'rows',
fields:['id','name','occupation']
});
store.load();
*/
var store=new Ext.data.JsonStore( {
data: { 'results': 2,'rows': [
{ 'id': 1,'name': 'Bill',occupation: 'Gardener' },
{ 'id': 2,'name': 'Ben',occupation: 'Horticulturalist' }
]},
autoLoad:true,'occupation']
})

//目前请先略过gridpanel,以后再说 var grid = new Ext.grid.GridPanel( { ds: store,columns: [ {header: "id",width: 200,dataIndex: 'id'},{header: "name",{header: "occupation",dataIndex: 'occupation'} ],height:350,width:620,title:'Array Grid',renderTo: 'Div_GridPanel' }); Ext.data.SimpleStore 从数组对象更方便的创建Store对象,例 var store=new Ext.data.JsonStore( { data:[ [1,'Bill','Gardener'],'Ben','Horticulturalist'] ],autoLoad:true,fields:[ {name: 'name',{name:'occupation',mapping:2}] }) var grid = new Ext.grid.GridPanel( { ds: store,columns: [ {header: "name",renderTo: 'Div_GridPanel' });