如何不要求application.css.scss两次？

Question

刚为我的应用做了一些基本的样式。使用Twitter Bootstrap ....应用程序部署到Heroku并正在工作但现在使用Bootstrap样式更新我收到此错误：

ActionView :: Template :: Error（/app/app/assets/stylesheets/application.css已被要求）：

任何人都有任何想法。现在已经忙了几个小时了。尝试过一堆东西。其中一些提到：

Why do I get an ActionView::Template::Error only when trying to upload an App to Heroku?

2013-07-17T15:12:26.494137+00:00 app[web.1]: Started GET "/" for 71.203.124.202 at 2013-07-17 15:12:26 +0000
2013-07-17T15:12:27.403656+00:00 app[web.1]:     4:     %title
2013-07-17T15:12:27.403656+00:00 app[web.1]: 
2013-07-17T15:12:27.403656+00:00 app[web.1]: ActionView::Template::Error (/app/app/assets/stylesheets/application.css has already been required):
2013-07-17T15:12:27.403656+00:00 app[web.1]:     3:   %head                              
2013-07-17T15:12:27.403656+00:00 app[web.1]:     5:       Current Lines and Analysis
2013-07-17T15:12:27.403656+00:00 app[web.1]:     6:     = stylesheet_link_tag    "application", :media => "all"
2013-07-17T15:12:27.403656+00:00 app[web.1]:     7:     = javascript_include_tag "application"
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/navigation/_main_nav.html.haml (1.4ms)
2013-07-17T15:12:27.403656+00:00 app[web.1]:   app/views/layouts/posts.html.haml:6:in `_app_views_layouts_posts_html_haml___3387163029388442478_46287060'
2013-07-17T15:12:27.403656+00:00 app[web.1]:     8:     = csrf_meta_tags                                          
2013-07-17T15:12:27.403656+00:00 app[web.1]:     9:     :javascript
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_events_sort_toggle.html.haml (1.0ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_main_flash.html.haml (0.1ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_header.html.haml (4.5ms)
2013-07-17T15:12:27.403892+00:00 app[web.1]: 
2013-07-17T15:12:27.403892+00:00 app[web.1]: 
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_events_sidebar.html.haml (22.6ms)
2013-07-17T15:12:27.404248+00:00 app[web.1]: Completed 500 Internal Server Error in 904ms
2013-07-17T15:12:27.404086+00:00 app[web.1]: Processing by PostsController#index as HTML
2013-07-17T15:12:27.404248+00:00 app[web.1]:   Rendered posts/index.html.haml within layouts/posts (40.5ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_posts_sort_toggle.html.haml (1.5ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_posts_multi.html.haml (2.2ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_hot-events-box.html.haml (2.0ms)
2013-07-17T15:12:27.404086+00:00 app[web.1]:   Rendered shared/_leagues_toggle.html.haml (2.6ms)
2013-07-17T15:12:27.404248+00:00 app[web.1]:   Rendered shared/_top_users_sidebar.html.haml (1.7ms)
2013-07-17T15:12:27.404215+00:00 heroku[router]: at=info method=GET path=/ host=www.webxxxxx.com fwd="xx.203.124.xxx" dyno=web.1 connect=1ms service=918ms status=500 bytes=643

---

application.css.scss文件

---

/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
 * or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the top of the
 * compiled file, but it's generally better to create a new file per style scope.
 *
 *= require_self
 *= require bootstrap
 *= require_tree .
 */

@import "bootstrap";

---

当我从帖子布局中取出这两行时，网站呈现但没有样式......

---

= stylesheet_link_tag    "application", :media => "all"
= javascript_include_tag "application"

有什么想法吗？

Answer 1

检查application.css目录中是否有app/assets/stylesheets个文件。默认情况下，rails会将application.css.scss中的内容放在application.css中。您可能已创建此文件但错过了删除默认application.css。

Answer 2

也许与你的问题有关，但是如果你使用源代码控制并且你在过去完成了合并，那么你将拥有一个类似于application.css.orig的样式表，它将包含在require_tree中。我有同样的错误，通过删除* .orig文件，它立即解决了。

基本上，任何名为* .css。*的东西都可能对Rails造成严重破坏。

Answer 3

我发现删除require_tree。单独添加文件就可以了。也许我有冲突因为我使用rails_admin ???

为遇到此问题的其他人提供此服务。

Answer 4

我遇到了同样的问题，我通过运行＆＃34; rake资产来修复它：预编译RAILS_ENV =生产＆＃34;在当地，然后推回到heroku。