Emberjs 异步路由 [英] Emberjs async routing

问题描述

我的问题与 #1183 和 #1268 emberjs.

My problem is related with the issues #1183 and #1268 of emberjs.

我在路线上有动态元素.如果我通过应用程序导航，一切都很好.问题是当我重新加载页面或键入 url 时.在这种情况下，应用程序输入反序列化函数并通过它们的 ID 加载和对象，但此加载是异步的.

I have dynamic element at routes. All is ok if I navigate throuht application. The problem is when I reload a page or when a type the url. In that case the app enter in the deserialize function and load and object by their id, but this load is asynchronous.

问题 #1268 lukemelia 说你需要让你的结果反序列化方法实现了承诺模式".

At issue #1268 lukemelia says "you will need to make the result of your deserialize method implement the promises pattern".

我尝试过，但总是松散的上下文.我的代码类似于:

I try it but always loose context. My code is similar to:

page: Ember.Route.extend
route: '/:alias'
deserialize: (router, params) -> page=App.Page.find(params.alias)
$.when( page.get("isLoaded") ).done( () -> console.debug(page.get("alias")) return page)
loading: Em.State.extend

路由器进入加载状态，但返回时没有上下文数据.我想我做错了什么.可能一切都错了.

The router goes to loading state but then return with no context data. I think i doing something wrong. Possibly all is wrong.

有人可以帮我吗?有没有例子?

Can anybody help me? Is there and example?

谢谢！

已解决:

page: Ember.Route.extend
    route: '/:id'
    deserialize: (router, params) ->
        page=App.Page.find(params.id})
        deferred = $.Deferred()
        page.addObserver("isLoaded", -> deferred.resolve(page))
        return deferred.promise()
    serialize: (router, page) ->
        return {id: page.get("id") }
    connectOutlets: (router, page) ->
        router.get('applicationController').connectOutlet
            context: page
            name: "page"
loading: Em.State.extend
    connectOutlets: (router, context) ->
        router.get('applicationController').connectOutlet(context: context, name: "loading")

页面加载时活动状态为l​​oading，页面加载完成后，路由器自动加载页面状态.

While page is loading the active state is loading, when page finish loading, router load page state automatically.

我希望这可以帮助某人

推荐答案

@leroj7 您已经找到了一个可行的解决方案.感谢分享.我创建了一个 mixin，将其添加到需要具有此行为的模型中:

@leroj7 you've figured out a workable solution. Thanks for sharing it. I've created a mixin that I add to models that I need to have this behavior:

Editor.ModelPromise = {
  init: function() {
    this._super();
    this._deferred = $.Deferred();
    this._deferred.promise(this);
    this.one('didLoad', this, '_resolveModelPromise');
    this.one('becameError', this, '_rejectModelPromise');
  },
  _resolveModelPromise: function() {
    this._deferred.resolve(this);
  },
  _rejectModelPromise: function() {
     this._deferred.reject(this);
  }
};

也可在 https://gist.github.com/1b54f0956ba10195a3bc

这样的方法最终会被嵌入到 ember-data 中，尽管它很可能不会依赖 jQuery，因为 ember-data 目前不依赖于 jQuery.

An approach like this will eventually be baked into ember-data, though it will most likely NOT have a jQuery dependence, since ember-data does not currently depend on jQuery.

这篇关于Emberjs 异步路由的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！