为共享样式表创建gem并在Rails应用程序中使用它

Question

I'm trying to create a gem to put all my common stylesheets in. I can't to figure out how to import the stylesheets in a Rails application. Here's what I've done so far (following this guide ):

1. I ran bundle gem apple_core .

2. I modified apple_core.rb to contain a rails engine class like so:

    require "apple_core/version" module AppleCore class Engine < Rails::Engine end end 

3. I created the apple_core stylesheets directory using mkdir -p lib/apple_core/app/assets/stylesheets/apple_core .

4. I created an index file inside the apple_core stylesheets directory and added the following to it:

    /* *= require_self *= require_tree . */ 

5. I made a test.css.scss file in the same directory and added:

    a { color: red; } 

6. I created a GitHub repository for the gem and pushed it.

7. In my Rails application, I added the gem to my Gemfile in the assets group.

8. I ran bundle install .

I tried to include my gem in one of my files using @import "apple_core"; , but when I attempted to load the page I received a couldn't find file 'apple_core' error. What am I missing here?

Answer 1

You just have to mirror the directories in your gem as they are in a rails project. So you can put assets to app/assets , lib/assets and vendor/assets . You then have to make sure that these files are included in your gemspec, for example:

  s.files = Dir["{app,config,db,lib,vendor}/**/*"] + ["MIT-LICENSE", "Rakefile", "Readme.md"]

So the Path should then be vendor/assets/stylesheets/apple_core .