对于ExtJS的Sencha文档,我感到非常困惑。该文档从入门指南开始,该指南重点介绍了适用于您的应用程序的类和源代码的合适结构的重要性。但是,提供的示例将打破“入门指南”中规定的所有约定。代码不是分解成适当的Model,Store,View等类文件,而是将示例作为单个文件提供,其中的示例源代码在单独的源文件中不易重复使用。Sencha ExtJS REST风格的网格示例混淆
我开始遵循门户示例(http://docs.sencha.com/ext-js/4-1/#!/example/portal/portal.html),因为这是我想要创建的应用程序。我想增强Portal示例并添加一个屏幕,该屏幕将显示网格并使用RESTful Web服务作为数据后端。我创建了后端,我只是想创建前端。所以我看了一下RESTful示例(http://docs.sencha.com/ext-js/4-1/#!/example/restful/restful.html)
我试图将RESTful示例复制到单独类的推荐模式中,例如型号,存储,显示:
型号:
Ext.define('MyLodge.model.Member', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'email', type: 'string'},
{name: 'href', type: 'string'}
]
});
商店:
Ext.require('MyLodge.model.Member');
Ext.define('MyLodge.store.Members', {
autoLoad: true,
autoSync: true,
model: 'MyLodge.model.Member',
proxy: {
type: 'rest',
url: 'http://localhost:8888/rest/memberapi/members' ,
reader: {
type: 'json',
root: 'data'
},
writer: {
type: 'json'
}
},
listeners: {
write: function(store, operation){
var record = operation.getRecords()[0],
name = Ext.String.capitalize(operation.action),
verb;
if (name == 'Destroy') {
record = operation.records[0];
verb = 'Destroyed';
} else {
verb = name + 'd';
}
Ext.example.msg(name, Ext.String.format("{0} member: {1}", verb, record.getId()));
}
}
});
查看:
Ext.define('MyLodge.view.content.MemberGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.membergrid',
initComponent: function(){
var store = Ext.create('MyLodge.store.Members');
Ext.apply(this, {
height: this.height,
store: store,
stripeRows: true,
columnLines: true,
columns: [{
id : 'name',
text : 'Name',
flex: 1,
sortable : true,
dataIndex: 'name'
},{
text : 'E-Mail',
width : 150,
sortable : true,
dataIndex: 'email'
},{
text : 'Href',
width : 200,
sortable : true,
dataIndex: 'href'
}],
dockedItems: [{
xtype: 'toolbar',
items: [{
text: 'Add',
iconCls: 'icon-add',
handler: function(){
// empty record
store.insert(0, new MyLodge.model.Member());
rowEditing.startEdit(0, 0);
}
}, '-', {
itemId: 'delete',
text: 'Delete',
iconCls: 'icon-delete',
disabled: true,
handler: function(){
var selection = grid.getView().getSelectionModel().getSelection()[0];
if (selection) {
store.remove(selection);
}
}
}]
}]
});
this.callParent(arguments);
}
});
但我不知道在哪里把代码控制网格行选择并启用删除按钮:
grid.getSelectionModel().on('selectionchange', function(selModel, selections){
grid.down('#delete').setDisabled(selections.length === 0);
});
此外,当我点击添加按钮我得到以下错误:
Uncaught TypeError: Object [object Object] has no method 'insert'.
任何帮助,将不胜感激。