Heroku / Ruby-on-Rails错误：图像不能预编译 [英] Heroku / Ruby-on-Rails error: image not precompiling

问题描述

  ----->我知道Heroku正在运行rake资产：预编译任务：编写config / database.yml以从DATABASE_URL读取
 ----->为Rails资产管道准备应用程序
运行：rake资产：预编译
 -----> Rails插件注入
注入rails_log_stdout 
注入rails3_serve_static_assets 
 ----->发现过程类型
 Procfile声明类型 - > （无）
 Ruby / Rails的默认类型 - >控制台，耙子，网络，工人
 ----->编译的段塞大小为17.7MB 
 ----->启动...完成
  

我告诉它在production.rb中预编译图像

 ＃来自：http://stackoverflow.com/questions/8052865/rails-3-1-asset-pipeline-why-my-images-不要预编译生产
 config.assets.precompile + =％w [*。png * .jpg * .jpeg * .gif] 
  

那么为什么我仍然会得到这个500错误？

  2012 -05-29T02：57：15 + 00：00 app [web.1]：在2012-05-29 02:57:15 +0000 
开始GET/ signin为46.114.68.16 2012-05- 29T02：57：15 + 00：00 app [web.1]：通过SessionsController处理＃new as HTML 
 2012-05-29T02：57：15 + 00：00 app [web.1]：渲染会话/在布局/应用程序中的new.html.erb（25.4ms）
 2012-05-29T02：57：15 + 00：00应用程序[web.1]：在27ms内完成500次内部服务器错误
 2012- 05-29T02：57：15 + 00：00 app [web.1]：
 2012-05-29T02：57：15 + 00：00 app [web.1]：ActionView :: Template :: Error twitter_64.png未预编译）：
 2012-05-29T02：57：15 + 00：00 app [web .1]：25：< div id =auths> 
 2012-05-29T02：57：15 + 00：00 app [web.1]：27：< a href =/ auth / twitterclass =provider> 
 2012-05-29T02：57：15 + 00：00 app [web.1]：26：< h2>或通过以下其中一种登录：< / h2> 
 2012-05-29T02：57：15 + 00：00 app [web.1]：28：<％= image_tagtwitter_64.png，：size => 64x64，：alt => Twitter％> Twitter< / a> 
  

有趣的是，我在其他页面上显示的图像显示得很好。不知道为什么一些图像不起作用，但有些会... ...

解决方案

首先，确保你有这个设置为：

  config.assets.initialize_on_precompile = false 
  

如果这不起作用，那么在构建slug之前尝试手动运行预编译任务是值得的;我认为这样做会有细微的差别：

  RAILS_ENV =生产包exec rake资产：预编译
  code> 

最后，这不是一个解决方案，但如果所有其他方法都失败了，临时解决方法是设置



  config.assets.compile = true 
  




I know that Heroku is running the rake assets:precompile task:

-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
-----> Rails plugin injection
       Injecting rails_log_stdout
       Injecting rails3_serve_static_assets
-----> Discovering process types
       Procfile declares types      -> (none)
       Default types for Ruby/Rails -> console, rake, web, worker
-----> Compiled slug size is 17.7MB
-----> Launching... done

And I told it to precompile images in production.rb

# from: http://stackoverflow.com/questions/8052865/rails-3-1-asset-pipeline-why-my-images-do-not-precompile-for-production
config.assets.precompile += %w[*.png *.jpg *.jpeg *.gif] 

So why do I still get this 500 error?

2012-05-29T02:57:15+00:00 app[web.1]: Started GET "/signin" for 46.114.68.16 at 2012-05-29 02:57:15 +0000
2012-05-29T02:57:15+00:00 app[web.1]: Processing by SessionsController#new as HTML
2012-05-29T02:57:15+00:00 app[web.1]:   Rendered sessions/new.html.erb within layouts/application (25.4ms)
2012-05-29T02:57:15+00:00 app[web.1]: Completed 500 Internal Server Error in 27ms
2012-05-29T02:57:15+00:00 app[web.1]: 
2012-05-29T02:57:15+00:00 app[web.1]: ActionView::Template::Error (twitter_64.png isn't precompiled):
2012-05-29T02:57:15+00:00 app[web.1]:     25: <div id="auths">
2012-05-29T02:57:15+00:00 app[web.1]:     27:   <a href="/auth/twitter" class="provider">
2012-05-29T02:57:15+00:00 app[web.1]:     26:   <h2>Or sign in through one of these:</h2>
2012-05-29T02:57:15+00:00 app[web.1]:     28:     <%= image_tag "twitter_64.png", :size => "64x64", :alt => "Twitter" %>Twitter</a>

Interestingly, I have images on other pages that show just fine. Don't know why some images wouldn't work, but some would...

解决方案

First, be sure you have this set as well:

config.assets.initialize_on_precompile = false

If that doesn't work, it's worth trying to manually run the precompile task before building the slug; I think there are subtle differences when done this way:

RAILS_ENV=production bundle exec rake assets:precompile

Last, it's not a solution, but if all else fails, a temporary workaround would be to set

config.assets.compile = true

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