No concern named active_scaffold was found!

[silambarasanmuthuvel]

i've changed the my app to rails 4.2 to 5.2 so
as_routes is not worked instead of that i put
resources :model, concerns: :active_scaffold
now it is showing the error as
No concern named active_scaffold was found!

[scambra]

Run rails g active_scaffold:install, it should add concerns definition to your routes. It may change your application.js and application.css manifests, check them.

Or just add concerns to your routes, at top of draw block:

concern :active_scaffold, ActiveScaffold::Routing::Basic.new(association: true)
concern :active_scaffold_association, ActiveScaffold::Routing::Association.new