从Ajax商店读取ExtJS消息 [英] Read ExtJS message from ajax store

问题描述

我有一个带有ajax代理和json阅读器的ExtJS商店:

I have an ExtJS store with an ajax proxy and json reader:

Ext.create('Ext.data.Store', {
    proxy: {
        type: 'ajax',
        url: '...',
        reader: {
            type: 'json',
            root: 'data',
            totalProperty: 'totalCount',
            messageProperty: 'message',
            successProperty: 'success'
        },
    ...

这是我从服务器获得的信息:

This is what I get from the server:

data: [...]
message: "I want to read this string after the store is loaded"
success: true
totalCount: x

现在，我想在商店加载时访问消息"-从哪里获得?我看了很多东西，但是找不到合适的地方吗?代理中唯一的侦听器是例外，对我没有真正的帮助.

Now I want to access the 'message' when the store is loaded - where do I get it? I looked a lot but I can't find a place to hook in? The only listener in the proxy is exception, that doesn't really help me.

推荐答案

使用商店

use store load event:

Ext.create('Ext.data.Store', {
  listeners: {
    'load': function(store, records, successful, operation) {
      alert(operation.resultSet.message);
    }
  },
  proxy: {
  // ...

更新

看来，加载事件的文档是错误的.正确的参数列表是(store, records, successful)(无操作参数).因此，上述解决方案不起作用.

It appears that documentation for load event is wrong. The correct list of arguments is (store, records, successful) (no operation argument). Therefore the solution above wouldn't work.

但是，有读者的 属性，可以提供帮助:

However there is reader's rawData property which can help:

Ext.create('Ext.data.Store', {
  listeners: {
    'load': function(store, records, successful) {
      alert(store.getProxy().getReader().rawData.message);
    }
  },
  proxy: {
  // ...

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