Rails 5.2 has landed and it brings some pretty cool new additions to the Rails stack.
However while upgrading one of my apps, I ran
rails routes and noticed some new Active Storage routes had appeared:
rails_service_blob GET /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs#show rails_blob_representation GET /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show rails_disk_service GET /rails/active_storage/disk/:encoded_key/*filename(.:format) active_storage/disk#show update_rails_disk_service PUT /rails/active_storage/disk/:encoded_token(.:format) active_storage/disk#update rails_direct_uploads POST /rails/active_storage/direct_uploads(.:format) active_storage/direct_uploads#create
As I didn’t intend to have any uploaded content in this app, I wanted to remove them. The documentation unfortunately doesn’t mention much about these new routes. So I got digging through the rails core code & found a solution.
How to remove these routes
config/application.rb file, find the line:
And replace it with:
require "rails" # Include each railties manually, excluding `active_storage/engine` require "active_model/railtie" require "active_job/railtie" require "active_record/railtie" # require "active_storage/engine" require "action_controller/railtie" require "action_mailer/railtie" require "action_view/railtie" require "action_cable/engine" require "sprockets/railtie" require "rails/test_unit/railtie"
What this will do is instead of requiring rails/all, it’ll just require the railties we’re planning to use.
active_storage/engine, the Active Storage railties is no longer required and the routes it requires are no longer mounted. 👍
Undefined method `active_storage’
If you’re running into an error that looks a little bit like:
NoMethodError: undefined method `active_storage' for #<Rails::Application::Configuration
You have a reference to ActiveStorage in one of your
config/environments/*.rb files which looks like:
# Store uploaded files on the local file system (see config/storage.yml for options) config.active_storage.service = :local
Remove that line and also the
config/storage.yml if it is present, and you should be good to go.
Skip adding ActiveStorage on new builds
If you’re starting a new project and you’d like to skip having ActiveStorage be added from the get go, add the
--skip-active-storage argument when you generate a new project. For example:
rails new AwesomeProject --skip-active-storage