我有一个通过 json 存储获取数据的网格。我想显示网格中的总行数。问题是 store.count() 函数在商店加载之前运行,所以它返回 0。我怎样才能让我的 count 函数只在商店加载后运行?我在 MVC 中工作,这是我的 app.js,其中包含我的计数逻辑。
感谢您的任何帮助
Ext.application({
name: 'AM',
appFolder: 'app',
controllers: [
'Users'
],
launch: function(){
Ext.state.Manager.setProvider(Ext.create('Ext.state.CookieProvider'));
Ext.create('Ext.container.Viewport', {
resizable: 'true',
forceFit: 'true',
layout: 'fit',
items:[{
xtype: 'userpanel',
}]
});
var port = Ext.ComponentQuery.query('viewport')[0],
panel = port.down('userpanel'),
grid = panel.down('userlist'),
label = panel.down('label');
var count = grid.store.getCount();
var labelText = "Number of people in list: " + count;
label.setText(labelText);
}
});
店铺代码:
Ext.define('AM.store.Users', {
extend: 'Ext.data.Store',
model: 'AM.model.User',
autoLoad: true,
autoSync: true,
purgePageCount: 0,
proxy: {
type: 'rest',
url: 'json.php',
reader: {
type: 'json',
root: 'queue',
successProperty: 'success'
}
},
sortOnLoad: true,
//autoLoad: true,
sorters: [
{
property: 'PreReq',
direction: 'DESC'
},
{
property: 'Major1',
direction: 'ASC'
},
{
property: 'UnitsCompleted',
direction: 'DESC'
}
],
listeners:{
onload: function(){
var port = button.up('viewport'),
grid = port.down('userlist'),
panel = port.down('userpanel'),
label = panel.down('label'),
count = grid.store.getCount(),
labelText = "Number of people in list: " + count;
label.setText(labelText);
},
scope: this
}
});
网格代码:
Ext.define('AM.view.user.List' , {
extend: 'Ext.grid.Panel',
alias: 'widget.userlist',
store: 'Users',
height: 'auto',
width: 'auto',
//resizable: 'true',
features:[{
ftype: 'grouping'
}],
autoFill: 'true',
layout: 'fit',
autoScroll: 'true',
initComponent: function() {
function renderTip(value, metaData, record, rowIdx, colIdx, store) {
metaData.tdAttr = 'data-qtip="' + value + '"';
return value;
};
var dateRender = Ext.util.Format.dateRenderer('m/d/Y');
this.columns=[
//code for all my columns
]
];
this.callParent(arguments);
}
});