Rails app automatically loading asset files

In the process of developing my Rails application with Twitter Bootstrap, I encountered an interesting situation. After adding a blank "custom.css" file to the "app/assets/stylesheets" folder, everything seemed normal. It wasn't until I customized the ".btn" class that I noticed the changes reflected on the webpage without explicitly linking the "custom.css" file in any HTML code.

It raised a question: Is it standard behavior for files added to the "app/assets/stylesheets" folder to be automatically loaded in the web app? Why is the "custom.css" file being applied automatically, even though no direct link has been established?

htmlcssruby-on-railstwitter-bootstrap

Answer №1

If you're working with the default application.css file, you'll likely come across a line like this:

 *= require_tree .

This particular line is responsible for recursively including all stylesheets found under app/assets/stylesheets.

If you prefer not to include all stylesheets in this manner, you can opt to remove that line and individually specify each stylesheet that you do want to include like so:

 *= require_self
 *= require foo
 *= require bar

Answer №2

That's correct! Within your application.css file, you will likely find the following line of code:

*= require_tree

This code snippet is responsible for including all files located within your app/assets/stylesheets folder.

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