Ext.data.GroupingStore
繼承自Ext.data.Store,爲Store增加了分組功能.其它用法與Store一致,惟一需要注意的是使用GroupingStore時必須指定sortInfo信息
增加了配置屬性
groupField : String//用於分組的字段
groupOnSort : Boolean//如果爲真,將依排序字段重新分組,默認爲假
remoteGroup : Boolean//遠程排序
當然也會多一個group方法
groupBy( String field, [Boolean forceRegroup] ) : void
顧名思義都是重新排序用的
下面是個簡單的示例
var arr=[ [1, '本', '拉登'], [2, '笨', '拉登'],[3, '笨', '拉燈'] ];
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時必須指定sortInfo信息
});
store.loadData(arr);
//GridPanel以後會討論,這兒使用它是爲了直觀的表現GroupingStore
var grid = new Ext.grid.GridPanel( {
ds: store,
columns: [
{header: "name", width: 20, sortable: true,dataIndex: 'name'},
{header: "occupation", width: 20,sortable: true, 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子類,目標是更方便的使用json對象做數據源
構造中多了fields,root,用法如下例所示
/*
這是使用遠程對象,返回內容與下面本地對象的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,
root:'rows',
fields:['id','name','occupation']
})
//目前請先略過gridpanel,以後再說
var grid = new Ext.grid.GridPanel( {
ds: store,
columns: [
{header: "id", width: 200, sortable: true,dataIndex: 'id'},
{header: "name", width: 200, sortable: true,dataIndex: 'name'},
{header: "occupation", width: 200,sortable: true, dataIndex: 'occupation'}
],height:350,
width:620,
title:'Array Grid',
renderTo: 'Div_GridPanel'
});
Ext.data.SimpleStore
從數組對象更方便的創建Store對象,
例
var store=new Ext.data.JsonStore( {
data:[
[1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist']
],
autoLoad:true,
fields:[ {name: 'name', mapping: 1}, {name:'occupation',mapping:2}]
})
var grid = new Ext.grid.GridPanel( {
ds: store,
columns: [
{header: "name", width: 200, sortable: true,dataIndex: 'name'},
{header: "occupation", width: 200,sortable: true, dataIndex: 'occupation'}
],height:350,
width:620,
renderTo: 'Div_GridPanel'
});