如何配置 extjs 阅读器来读取这个 json? [英] how to configure extjs reader to read this json?

问题描述

我已经配置了 extjs store 来从 useragentstring.com api 加载数据，这个 api 返回这样的数据

I've configured extjs store to load data from useragentstring.com api, this api return data like this

{"agent_type":"Browser","agent_name":"Opera","agent_version":"9.70","os_type":"Linux","os_name":"Linux","os_versionName":"","os_versionNumber":"","os_producer":"","os_producerURL":"","linux_distibution":"Null","agent_language":"English - United States","agent_languageTag":"en-us"}

Ext.define('Oms.model.Userinfo', {
    extend  : 'Ext.data.Model',
    fields  : ['agent_type', 'agent_name', 'agent_version', 'os_type', 'os_name']
});

Ext.define('Oms.store.Userinfo', {
    extend      : 'Ext.data.Store',
    model       : 'Oms.model.Userinfo',
    proxy: {
        type    : 'jsonp',
        reader  : {
            type: 'json',
            root: ''
        }       
    }
});

这家商店抛出一个错误

这可能是因为这个 json 中没有 root 吗?

maybe this happen because there is no root in this json ?

知道如何正确读取此输出并加载存储吗?

any idea how to read this output and load store correctly?

问候

推荐答案

当我未设置 root 或将其设置为 undefined 时，它对我有用.

It works for me when I don't set root or when I set it to undefined.

您还可以扩展 Ext.data.reader.Json 以调整对您的需求的响应.示例:

You may also extend Ext.data.reader.Json to adjust response to your needs. Example:

Ext.define('Ext.data.reader.JsonPWithoutRoot', {
    extend: 'Ext.data.reader.Json',
    read: function(response) {
        return this.callParent([ { root: response } ]);
    },
    root: 'root'
});

然后在代理中像这样定义它:

And then in proxy define it like this:

proxy: {
    type: 'jsonp',
    callbackKey: 'method',
    url: 'http://localhost/ext4/data3.php',
    reader: Ext.create('Ext.data.reader.JsonPWithoutRoot', {})
}

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