Adding icon to rails application

Question

How can I add an icon to my Rails application (to show in tabs when opened in a browser, etc.)?

Answer 1

After reading and trying all this answers without success I ended up doing this

1. Add a file favicon.png to your public/assets folder
2. In your $/app/views/layouts/application.html.erb modify the content of the tag adding this

No need to change the web_server configuration file (nginx, apache, etc) no need to precompile the assets.

Just stop and run/debug your web site, clear the cache from your browser and reopen the page. It should work