Sprockets::CircularDependencyError in Store#index

问题

I am following the manual Agile Web Development with Rails 4th edition and I have a problem with sprocket css in rails 3.1.

The code css is:

http://media.pragprog.com/titles/rails4/code/rails31/depot_e/app/assets/stylesheets/application.css.scss

If I modify the css code of app/assets/stylesheets/aplication.css.scss I catch the next error:

Sprockets::CircularDependencyError in Store#index

Showing /home/ubuntu/Desktop/Depot/app/views/layouts/application.html.erb where line #5 raised:

/home/ubuntu/Desktop/Depot/app/assets/stylesheets/application.css.scss has already been required
Extracted source (around line #5):

2: <html>
3: <head>
4:   <title>Pragprog Books Online Store</title>
5: <%= stylesheet_link_tag "application" %>
6: <%= javascript_include_tag "application" %>
7: <%= csrf_meta_tag %>
8: </head>
Rails.root: /home/ubuntu/Desktop/Depot

Application Trace | Framework Trace | Full Trace
app/views/layouts/application.html.erb:5:in`_app_views_layouts_application_html_erb___1008723970_81658620'

I dont understand why if I modify a margin value or a padding value in aplication.css.scss for example I get this error.

Thank you very much.

回答1:

You should remove app/assets/stylesheets/application.css.

回答2:

I had a similar problem:
Asset pipeline not precompiling sass

The circular dependency happens when the manifest file requires the tree files. Sass does this anyway so it's not necessary.

Remove:

 *= require_tree .

回答3:

I was having this same problem after installing SCSS. I fixed the problem by removing the defult comments that rails places in the header. So this:

/*
 * 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_tree .
*/

#wrapper {
    width: 980px;
    margin: 0 auto;
}

Became this:

#wrapper {
    width: 980px;
    margin: 0 auto;
}

回答4:

Just name the application.css as "application.scss". This will solve your problem.

来源：https://stackoverflow.com/questions/7462661/sprocketscirculardependencyerror-in-storeindex

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