无法使用Backbone.js将数据保存到localStorage

时间:2013-03-09 04:04:40

标签: javascript jquery backbone.js local-storage requirejs

我正在尝试将一些数据保存到localStorage,同时与Require.js一起处理Backbone.js框架。

但是,我收到以下错误:

Uncaught Error: A "url" property or function must be specified

任何可能导致此错误的线索? 一个快速的谷歌透露,必须设置Backbone.sync,但localStorage适配器是否已经为我做了这个?我错过了什么?

以下是一些相关的代码段:

require.config({
  paths: {
    // Major libraries
    jquery: 'libs/jquery/jquery.min',
    underscore: 'libs/underscore/underscore.min',
    backbone: 'libs/backbone/backbone.min',

    // Require.js plugins
    text: 'libs/require/text',

    // Backbone.js plugins
    localstorage: 'libs/backbone/localstorage.min',

    // Just a short cut so we can put our html outside the js dir
    // When you have HTML/CSS designers this aids in keeping them out of the js directory
    templates: '../templates'
  }
});

...

define([
    'underscore',
    'backbone',
    'models/score',
    'localstorage'
], function(_, Backbone, ScoreModel, Store){
    var ScoreCollection = Backbone.Collection.extend({
        model: ScoreModel,
        localStorage: new Store("ScoreCollection")
    });
    return ScoreCollection;
});

...

define([
    'underscore',
    'backbone'
], function(_, Backbone){
    var ScoreModel = Backbone.Model.extend({
    });
    return ScoreModel;
});

- 编辑 -

路线如下:

define([
    'jquery',
    'underscore',
    'backbone',
    'views/scores/list',
    'views/scores/add'
], function($, _, Backbone, ScoreListView, ScoreAddView){
    var AppRouter = Backbone.Router.extend({
        routes: {
            'scores': 'showScores',
            'scores/add': 'addScore',
            '*actions': 'defaultAction'
        }
    });

    var initialize = function(){
        var app_router = new AppRouter;

        app_router.on('route:showScores', function(){
            var scoreListView = new ScoreListView();
            scoreListView.render();
        });

        app_router.on('route:addScore', function(){
            var scoreAddView = new ScoreAddView();
            scoreAddView.render();
        });

        app_router.on('route:defaultAction', function(){
            console.log('No route');
        });

        Backbone.history.start();
    }
    return {
        initialize: initialize
    };
});

- 更新 -

显然,该模型似乎与该集合无关。因此,集合中设置的localStorage不会应用于模型。在模型上显式设置localStorage使其工作。但有人知道我错过了什么吗?

1 个答案:

答案 0 :(得分:0)

在模型上调用它并且其url函数未定义时,Backbone.sync的默认实现抛出

This errorBackbone.sync由其他函数隐式调用,例如保存模型。

如果您使用的是服务器端存储,则需要在模型上设置网址。但是,使用localStorage,您需要完全覆盖Backbone.sync方法,以便save,update和destroy函数转换为localStorage适配器上的操作。我没有使用骨干localStorage插件,但看起来它应该覆盖Backbone.synchttps://github.com/jeromegn/Backbone.localStorage/blob/master/backbone.localStorage.js#L208

尝试一些健全性检查以确保插件已加载并且正在执行覆盖功能。