When your Rails controller calls render, you can pass a :status option for the HTTP status code:
render 'results', status: 400
All important status codes also have a symbol alias, which makes your code easier to read:
render 'results', status: :bad_request
Attached is a
list
Show archive.org snapshot
of available symbol values for :status.
Posted by Henning Koch to makandra dev (2018-02-01 13:32)