php - 如何设置 Backbone Model.idAttribute？

我正在使用带有主干的MongoDb / Lithium php框架。

我希望我的所有模型ID和IDAttribute与我的数据库文档ID相同(即'_id'/ mongoid)

问题:

当我打印model.idAttribute的值时，它仅显示为_id。

当我打印model.get('idAttriubte')时，它是未定义的。

如何确保将idAttribute设置为与数据库id / mongoid相同？

这是模型类:

window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    idAttribute: '_id',
    id: '_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },
});

这是 View 代码，在模型上调用fetch。文档的杂项作为隐藏输入(holiday_id)传递到此页面。

console.log('Holiday URL:' + HOLIDAY_URL );
        var Holiday = new window.app.IHoliday({ _id: holiday_id });
        console.log('HOLIDAY before fetch: \n' + JSON.stringify(Holiday));
        Holiday.fetch(
                {
                    success: function(){
                        //alert('Holiday fetched:' + JSON.stringify(Holiday));
                        console.log('HOLIDAY Fetched: \n' + JSON.stringify(Holiday));
                        console.log('Holiday name:' + Holiday.get('holiday_name'));
                        console.log('Holiday id:' + Holiday.id);
                        console.log('Holiday idAttribute:' + Holiday.idAttribute);
                        console.log('Holiday idAttribute:' + Holiday.get('idAttribute'));
                    }
                });

firebug控制台的输出:

HOLIDAY before fetch:{"_id":"50bcaab24fbe3dfc1700000b"}
GET http://localhost:8080/li3/holidays/load/50bcaab24fbe3dfc1700000b 200 OK

HOLIDAY Fetched:
{"_id":"50bcaab24fbe3dfc1700000b","holiday_name":"eeeeeeeeeeeeeeeee","description":"","star_rating":"3","holiday_type":"family","rooms":"1","adults":"2","child":"0","emails":""}

Holiday name:eeeeeeeeeeeeeeeee
Holiday id:50bcaab24fbe3dfc1700000b
Holiday idAttribute:_id
Holiday idAttribute:undefined

编辑:
在注释掉模型类中id的条目之后，以下工作了...

    window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    //id: '_id',
    idAttribute: '_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },

最佳答案

idAttribute包含将用作ID的类成员的名称。因此，如果使用idAttribute: '_id'，Backbone将使用成员_id作为类的ID。

如果要使用holiday_id属性作为类IHoliday的ID，则可以尝试:

window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    idAttribute: 'holiday_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },
});

var Holiday = new window.app.IHoliday({holiday_id : holiday_id });

Backbone 将使用holiday_id属性代替常规的id属性。