rails 4 enabled rails to serve static assets: is it correct? (on heroku)

Question

Environment: heroku

Rails: 4

Ruby: 2

We deployed an app to heroku, and it seemed as though anything in the public folder was not accessible (didn\'t see

Answer 1

In previous Rails versions, Heroku injected a plugin that enabled serving of static assets so this issue didn't exist. As this plugin system was removed in Rails 4, they now created a gem which does the same. You enable it in your Gemfile via:

gem 'rails_12factor', group: :production

See Getting Started with Rails 4.x on Heroku

You could also of course use a CDN for your assets, but you're not required to.

For Rails 5+ work on twelve-factor platforms out of the box and the gem is no longer required