Improve Rails' HTTP manners by either appending or removing trailing slashes in generated URIs.

By default the routes Rails generates are accessible with or without trailing slashes — that makes every one appear as two separate resources, which is suboptimal for caching purposes. In this how-to we're going to append trailing slashes everywhere:

1) Enforce trailing slashes in generated URIs

# config/application.rb
config.action_controller.default_url_options = { trailing_slash: true }

2) Redirect legacy URIs

# Gemfile

gem 'rack-slashenforce'

Then, run bundle install and register the middleware:

# config/application.rb

config.middleware.use Rack::AppendTrailingSlash