Backbone MVC视图不会在同步时更新

Question

我一直在努力学习Backbone。

我设置了模型集合，每个模型都有自己的视图，每次模型与服务器同步时都应该呈现。服务器发回模型的ID。 似乎是在设置模型ID 之前渲染。如果你查看console.log（）输出，我会在它呈现之前打印模型的id。我也有它打印每个事件发生。我明白了：

undefined (model id)
add
change:id
change (not sure what changes here?)
sync

此外，我在暂停2秒model.save('name', 'New Name')后更改了模型的名称属性。这会导致另一个同步事件，但视图不会更新。

以下是工作代码：http://jsfiddle.net/flackend/brB7y/1/

或者在这里看到：

var game_library;

(function($) {

    _.templateSettings = {
        interpolate: /\{(.+?)\}/g
    };    

    var GameModel = Backbone.Model.extend({
        url: '/gh/gist/response.json/2895708/',
        name: undefined,
        initialize: function() {

            // Create a view for this model
            this.view = new GameView({model: this});

            // Sync model with server
            this.save();

            // Bind events
            this.on('sync', this.view.render());
            this.on('all', this.console);
        },
        console: function(event, model, changes) {

            console.log('['+ ++this.i +']-------------(event[:attr], model, changes)----------------');
            console.log(event);
            console.log(model);
            console.log(changes);
        },
        i: 0
    });

    var GameCollection = Backbone.Collection.extend({
        model: GameModel
    });

    var GameView = Backbone.View.extend({
        el: $('#holder'),
        template: $('#game-template').html(),
        render: function() {

            var template = _.template(this.template);
            console.log(this.model.id);
            this.$el.html(template(this.model.toJSON()));
        }
    });

    // Instantiate new game collection
    game_library = new GameCollection;

    // Add a game
    // Note: can only pass in 1 ID from gist, so only add 1 game.
    var games = [
        new GameModel({name: 'Skyrim'})
    ];

    // Note: `game_library.add(new GameModel({name: 'Skyrim'}));` does
    // not work for some reason having to do with instances...
    game_library.add(games);

    // 2 sec later...
    window.setTimeout(function() {

        game_library.get(1).save('name', 'The Elder Scrolls V: Skyrim');
    }, 2000);
})( jQuery );

感谢您的帮助!!

Answer 1

删除括号：

// Bind events
this.on('sync', this.view.render/*()*/);
this.on('all', this.console);

Answer 2

http://jsfiddle.net/brB7y/2/更新了要点。我已将您的刷新调用移动到可运行的本地函数。我不确定这背后的技术原因，但这是我之前使用它的方式。