Heroku和Rails 4：一些javascript无法正常工作

问题描述

我正在尝试在Heroku Rails 4应用程序上显示一个javascript项目。在我的本地开发机器上，一切都运行得很好。无法让它在Heroku上运行。

I'm trying to get a javascript item displaying on Heroku Rails 4 applicarion. On my local development machine, everything is running perfectly. Can't get it to work on Heroku.

在我的application.html.erb文件中，我添加了：

In my application.html.erb file I have added:

<%= javascript_include_tag "application" %>

和另一个视图文件（events.html.erb）我有：

and in another view file (events.html.erb) I have:

<script type="text/javascript">
   $(document).ready(function()
   ...code to add data to a timeline using getjson()...
</script>`

指的是assets> javascripts文件夹中的timeline.js文件。添加事件时（使用Rails CRUD操作） ，javascript代码调用getJson（）方法，并将事件添加到时间轴。这在本地计算机上正常工作。

which is referring to a timeline.js file in the assets>javascripts folder. When an event is added (using Rails CRUD operation, the javascript code is calling a getJson() method and is adding the event to a timeline. This is working as expected on local machine.

当我推送到Heroku时，我可以通过rails添加事件，但不会显示时间轴。

When I push to Heroku, I can add events through rails, but the timeline is not displayed.

我最初的想法是没有在Heroku上加载Javascript，所以我添加了一个简单的：

My initial idea was that Javascript was not being loaded on Heroku, so therefore I added a simple:

<script type="text/javascript">
   alert('Displays OK')
</script>

调用，这在Heroku（以及我的本地机器）上显示正常）。

call and this displays just fine on Heroku (as well as on my local machine).

在Heroku上查看页面源代码时，我可以看到：

When looking at the page source on Heroku, I can see:

<script src="/assets/application-6da332d35efc3706e98f87ead9900f20.js">

因此看来timeline.js文件是预编译的（它似乎是时间线js的最小化版本） ）。

so it appears that the timeline.js file is precompiled (it seems a minimized version of the timeline js).

在我的本地机器上，我没有看到预编译的js文件，但是我看到了：

On my local machine, I don't see the precompiled js file, but I see:

<script src="/assets/timeline.js?body=1"></script>
<script src="/assets/timeline.min.js?body=1"></script>

在Heroku上，它显示javascript警报，但不显示时间轴，这似乎表明有些东西搞砸了预编译中的javascript代码。

The fact that on Heroku, it displays the javascript alert, but not the timeline, seems to indicate that something is messed up with the javascript code in the precompilation.

我在heroku日志中看不到任何明显的东西。它说slug编译成功完成，我看不到错误消息。

I can't see anything obvious in the heroku logs. It says slug compilation was finished successfully and I can't see error messages.

有没有办法可以强制Heroku不使用预编译的js文件，所以我可以拥有Heroku：

Is there a way I can enforce Heroku to not use the precompiled js file, so I can have on Heroku:

   <script src="/assets/timeline.js?body=1"></script>
   <script src="/assets/timeline.min.js?body=1"></script>

我在production.rb文件中有以下内容：

I have the following in production.rb file:

config.serve_static_assets = false
config.assets.js_compressor = :uglifier
config.assets.compile = true
config.assets.compress = true
config.assets.digest = true
config.assets.debug = false

希望有人可以帮助我。这已经困扰了我几天了。任何帮助赞赏。
谢谢！

Hope someone can help me on this. This has been bugging me for couple of days now. Any help appreciated.Thanks!

推荐答案

我认为您需要指定必须预编译timeline.js。
在config / environments / production.rb上，添加：

I think you need to specify that timeline.js must be precompiled.On config/environments/production.rb, add this :

config.assets.precompile += %w( timeline.js )

在你看来，包括你的时间线js：

In you view, include you timeline js with :

<%= javascript_include_tag "timeline" %>

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