Question

考虑到以下关系模式模式:

var Server = Backbone.RelationalModel.extend({
    relations: [{
        type: Backbone.HasMany,
        key:  databases ,
        relatedModel:  Database ,
        collectionType:  DatabaseCollection ,
        includeInJSON:  id 
    }],

    defaults: {
        databases: []
    },
});

var Database = Backbone.RelationalModel.extend({});
var DatabaseCollection = Backbone.Collection.extend({
    model: Database
});

这些物体:

new Database({
    id: 1,
    name:  DB1 
});

new Database({
    id: 2,
    name:  DB2 
});

var s1 = new Server({
    id: 3,
    name:  S1 ,
    databases: [1,2]
});

将这种模式系列化或成型, 以何种最容易/最推荐的方式来质疑JSON的架构?

{
    databases: [
        { id: 1, name:  DB1  }
        { id: 2, name:  DB2  }
    ],

    servers: [
        { id: 3, name:  S1 , databases: [1, 2] }                 
    ]
}

这样就可以将数据发送到 / 从服务器上读取。

谢谢!

蒂姆·蒂姆

Answer 1

我用你的例子制作了你描述的JSON 我刚刚创建的这个小提琴小提琴小提琴有小小的改变 http://jsfiddle.net/scottluskcis/LQbjE/" rel=“nofollow” >example 。

我做了这些修改,是因为调试器显示一些警告,并取得了你描述的结果。希望这有帮助。

Moved the declaration of Database Model and DatabaseCollection to top before Server since Servers relatedModel and CollectionType point to those Models.
For relatedModel and collectionType instead of using Strings used the reference to Database and DatabaseCollection
Created a collection for Servers called ServerCollection
Added a few more examples

以下是你最后使用的代码, 我刚刚创建了一个普通的 Backbone 模型, 将两个收藏合并为一个。呼叫JSON后, JSON给了你一个向服务器传输的单个 JSON 对象。

var Database = Backbone.RelationalModel.extend({});
var DatabaseCollection = Backbone.Collection.extend({
    model: Database
});

var Server = Backbone.RelationalModel.extend({
    relations: [{
        type: Backbone.HasMany,
        key:  databases ,
        relatedModel: Database,
        collectionType: DatabaseCollection, 
        includeInJSON:  id  
    }],

    defaults: {
        databases: []
    } 
});
var ServerCollection = Backbone.Collection.extend({
    model: Server 
});

var allDatabases = new DatabaseCollection(); 
allDatabases.add([
    new Database({ id: 1, name:  DB1  }),  
    new Database({ id: 2, name:  DB2  }),
    new Database({ id: 3, name:  DB3  }),
    new Database({ id: 4, name:  DB4  })
]);   

var allServers = new ServerCollection(); 
allServers.add([
    new Server({
        id: 30,
        name:  S1 , 
        databases: [
          allDatabases.get(1),
          allDatabases.get(2)
        ]
    }),
    new Server({
        id: 40,
        name:  S2 ,
        databases: [
          allDatabases.get(3),
          allDatabases.get(4)
        ]
    })
]);  

// combine into an object to transfer to server as one 
var serverObject = new Backbone.Model({
     servers : allServers,
     databases : allDatabases
});  
console.log(serverObject.toJSON());

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