How to give fingerprint css path in production rails 4

Question

I am using `imgkit` to take snapshot of my webpage. I run: `RAILS_ENV=production bundle exec rake assets:precompile` To precompile my assets. All file of `app/assets` directory are compiled to `public/assets` `application.css` compiled as `application-7a23a105125768e41d9d24aee4553615.css`. My controller code is: ``` kit = IMGKit.new(render_to_string(:partial => 'form', :height => 200, :transparent => true, :quality => 10, :layout => false,:locals => {:project => @project})) # t = kit.to_img(:png) kit.stylesheets << "#{Rails.root.to_s}/public/assets/application.css" #file = kit.to_file(Rails.root + "public/pngs/" + "screenshot.png") file = kit.to_file(Rails.root + "public/assets/" + "screenshot.png") #send_file("#{Rails.root.to_s}/public/pngs/screenshot.png", :filename => "screenshot.png", :type => "image/png",:disposition => 'attachment',:streaming=> 'true') ``` I don't know how to resolve `/public/assets/application.css` not found error... No such file or directory - public/assets/ap…

Accepted Answer

You can use `Sprockets::Rails::Helper#asset_digest_path`, found here. Since you are in the controller, you have access to it with

```
self.class.helpers.asset_digest_path('application.css')
# => "application-7a23a105125768e41d9d24aee4553615.css"
```

Similarly, `asset_path` will yield the path to the application.css file

```
self.class.helpers.asset_path('application.css')
# => "/assets/application-7a23a105125768e41d9d24aee4553615.css"
```

How to give fingerprint css path in production rails 4

Solution

Problem