EXTJS hasone协会 [英] Extjs hasone association

问题描述

我有Person模型，它包含了ID，名字，姓氏等和 merital_id 字段。我也有Merital模型只包含2场：ID和标题。
服务器响应JSON如下：

I have Person model, it contains id, first_name, last_name etc and merital_id field. I also have Merital model contains only 2 field: id and title. Server responses JSON like:

{
    success: true,
    items: [
        {
            "id":"17",
            "last_name":"Smith",
            "first_name":"John",
            ...
            "marital_id":1,
            "marital": {
                "id":1,
                "title":"Female"
            }
        },
        ...
    ]
}

因此​​，如何能连接我的机型联想？我仍然可以在我的column.renderer使用record.raw.merital.title，但我不能在模板中使用这样的字段，如{姓氏} {} FIRST_NAME（{} merital.title）。
协会的王什么，我需要用，我trye​​d的belongsTo，但是当我尝试使用record.getMarital（）我得到一个错误在记载中没有这样的方法。

So how can I connect my models with association? I still can use record.raw.merital.title in my column.renderer, but I cannot use such fields in templates like {last_name} {first_name} ({merital.title}). What king of association do I need to use, I tryed belongsTo, but when I try to use record.getMarital() I get an error "no such method on record".

我使用ExtJS的4

I use extjs 4

推荐答案

您应该使用ExtJS的模型和协会，特别是HasOne关联。

You should be using ExtJS Models, and Associations, in particular the HasOne association.

文件：

的http：//文档.sencha.com / EXT-JS / 4-1 /＃！/ API / Ext.data.association.HasOne

例如：

http://jsfiddle.net/el_chief/yrTVn/2/

Ext.define('Person', {
    extend: 'Ext.data.Model',
    fields: [
        'id',
        'first_name',
        'last_name'
        ],

    hasOne: [
        {
        name: 'marital',
        model: 'Marital',
        associationKey: 'marital' // <- this is the same as what is in the JSON response
        }
    ],

    proxy: {
        type: 'ajax',
        url: 'whatever',
        reader: {
            type: 'json',
            root: 'items' // <- same as in the JSON response
        }
    }
});

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