ember-data：如何进行保存/保存的Flash消息 [英] ember-data: How to make a Saving/Saved flash message

问题描述

为了使我的应用程序顶部有一个黄色的保存/保存指示符消息，我想要一个布尔属性，指示是否有任何ember数据记录正在运行。

In order to make a little yellow "Saving"/"Saved" indicator message at the top of my app, I'd like to have a boolean property indicating if any ember-data records are currently in flight.

我尝试过：

App.store = DS.Store.create
  isSaving: (->
    for record in this.get('recordCache')
      if record?.getPath('stateManager.currentState.name') == 'inFlight'
        return true
    return false
  ).property('[e-mail]')

但是我发现 recordCache 是不可观察的。

but then I discovered that recordCache is not observable.

t使用交易，只有 App.store.commit（），所以我看了 App.store.get（'defaultTransaction'），但它没有任何有用的东西。

I don't use transactions, only App.store.commit(), so I looked at App.store.get('defaultTransaction'), but it didn't yield anything useful.

我正在使用RESTAdapter，所以如果我可以将其扩展到给我这个信息，那么也会工作。

I'm using the RESTAdapter, so if I can extend it into giving me this piece of information, that would work too.

推荐答案

嗯，你可以用一个doUpdate属性创建一个基本模型，它处理显示你的通知消息，然后让你的每一个模型都扩展。这实际上是一个暂时的解决方案，但它暂时适用：

Well, you could simply create a base model with a didUpdate property that handles showing your notification message, then have each of your models extend it. It's really a stop-gap solution, but it works for the time being:

App.Model = DS.Model.extend
    didUpdate: ->
        # invoke your notification
        alert("All changes saved!")

App.User = App.Model.extend()

但是....这将触发已更新的每个记录。因此，您可能希望创建通知类，使其不会立即打开多于一个保存的通知，但这取决于您。

However....this will fire for EVERY record that is updated. So you'd probably want create your notification class in such a way that it will not open more then one saved notification at once...but that's up to you.

我目前正在从这个拉动请求中 https：//实现一些基本的服务器验证方法。 github.com/emberjs/data/pull/376 ，我希望我能提出一个更好的方式来观察提交的状态（如果我这样做，当然会发布到这里）。

I'm currently working on implementing some of the basic server-validation methods from this pull request https://github.com/emberjs/data/pull/376, and I'm hoping that I'll come up with a better way to observe the status of commits (and will of course post back here if I do).

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