1

如果我想将以下数据呈现给一个主干.js 集合，我创建的 JSON 应该是什么样的？：

id: 1
fname: "John"
surname: "Lennon"
email: "john@beatles.com"
age: 22

id: 2
fname: "Paul"
surname: "McCartney"
email: "paul@beatles.com"
age: 22

id: 3
fname: "George"
surname: "Harrison"
email: "george@beatles.com"
age: 20

id: 4
fname: "Ringo"
surname: "Starr"
email: "ringo@beatles.com"
age: 24

我一直按如下方式导出它：

[{
    "id":1,
    "fname":"John",
    "surname":"Lennon",
    "email":"john@beatles.com",
    "age":22
},{
    "id":2,
    "fname":"Paul",
    "surname":"McCartney",
    "email":"paul@beatles.com",
    "age":22
},{
    "id":3,
    "fname":"George",
    "surname":"Harrison",
    "email":"george@beatles.com",
    "age":20
},{
    "id":4,
    "fname":"Ringo",
    "surname":"Starr",
    "email":"ringo@beatles.com",
    "age":24
}]

当出现上面的 JSON 时，我的收藏似乎只包含最后的披头士乐队 (Ringo)。

这是我的观点：

var app = app || {};

app.BeatleView = Backbone.View.extend({

        el: '#page',

        template: Handlebars.getTemplate( 'account_statement' ),

        initialize: function() {
                console.info('init:',this.collection);
                this.render();
                this.listenTo(this.collection, 'add', this.render);
                this.listenTo(this.collection, 'reset', this.render);
                this.collection.fetch();
        },

        // render library by rendering each book in its collection
        render: function() {
                var data = this.collection.toJSON();
        console.log('col', this.collection );  // added
                this.$el.html( this.template( {beatles: data} ));
                return this;
        }
});

这是我的收藏

var app = app || {};

app.BeatlesCollection = Backbone.Collection.extend({
        model: app.Beatle,
        url: 'http://localhost/path/to/beatles',

        initialize: function() {
                console.log('Init Collection');
        }
});

这是我的模特

var app = app || {};

// create a model to represent a single transaction on a statement
app.Transaction = Backbone.Model.extend({});

这就是console.log('col', this.collection );我认为的渲染方法显示的内容：

col child {length: 1, models: Array[1], _byId: Object, _listenerId: "l2", _events: Object…}
_byId: Object
_events: Object
_listenerId: "l2"
length: 1
models: Array[1]
0: child
_changing: false
_events: Object
_pending: false
_previousAttributes: Object
attributes: Object
amount: 205.99
currency: "USD"
date: "2013-05-13"
id: 13
vendor: "Reebok Outlet"
__proto__: Object
changed: Object
cid: "c3"
collection: child
id: 13
__proto__: Surrogate
length: 1
__proto__: Array[0]
__proto__: Surrogate

我的车把模板如下所示：

<h1>Your Statement</h1>
<table border="1">
    <thead>
        <th>Name</th>
        <th>Email</th>
        <th>Age</th>
    </thead>
    <tbody>
    {{#each beatle}}
        <tr>
            <td>{{this.fname}} {{this.surname}}</td>
            <td>{{this.email}}</td>
            <td>{{this.age}}</td>
        </tr>
    {{/each}}
    </tbody>
</table>
4

1 回答 1

1

看起来我上面发布的 JSON 是正确的。

问题是我发布的 JSON 是伪代码，而我实际上从后端系统输出的 JSON 是错误的——我输出中的所有 ID 都是相同的数字（复制/粘贴问题）。

对于任何想要创建 Backbone / Handlebars 应用程序的人来说，上面的代码似乎是一个很好的起点。

于 2013-09-06T08:15:54.783 回答