Rails 7 + Devise Not seeing flash messages from devise

I have a new rails 7 app [rails new devisetest], a simple controller with static page and added devise [gem 'devise' + rails g devise user]. All defaults. Flash messages added to the application.html.erb as per devise instructions

Devise error messages are not being shown, but I see them being generated in the console (or at least, I see the rendered message but they don't show, and I see rendered for the _links partial and that does show) In another test using a quick scaffold (and having copied the devise views into the app but not modified them), flash messages show for the scaffold but still not for devise.

If I visit http://localhost:3000/users/sign_up and create a user with a too short password I see this in the log

Started POST "/users" for ::1 at 2021-12-24 08:02:10 +0000
Processing by Devise::RegistrationsController#create as TURBO_STREAM
  Parameters: {"authenticity_token"=>"[FILTERED]", "user"=>{"email"=>"[email protected]", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
  TRANSACTION (0.1ms)  begin transaction
  User Exists? (2.7ms)  SELECT 1 AS one FROM "users" WHERE "users"."email" = ? LIMIT ?  [["email", "[email protected]"], ["LIMIT", 1]]
  TRANSACTION (0.2ms)  rollback transaction
  Rendering layout layouts/application.html.erb
  Rendering /home/sroot/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/devise-4.8.1/app/views/devise/registrations/new.html.erb within layouts/application
  Rendered /home/sroot/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/devise-4.8.1/app/views/devise/shared/_error_messages.html.erb (Duration: 0.7ms | Allocations: 582)
  Rendered /home/sroot/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/devise-4.8.1/app/views/devise/shared/_links.html.erb (Duration: 0.2ms | Allocations: 92)
  Rendered /home/sroot/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/devise-4.8.1/app/views/devise/registrations/new.html.erb within layouts/application (Duration: 3.9ms | Allocations: 2199)
  Rendered layout layouts/application.html.erb (Duration: 77.5ms | Allocations: 4429)
Completed 200 OK in 473ms (Views: 78.7ms | ActiveRecord: 3.1ms | Allocations: 15288)

Can anyone point out my mistake please? Or suggest other steps I can follow to get closer to my error?

Thanks

Solution 1:

I have the same issue. It is someway linked with the compatibility of Rails 7.0 and Devise 4.8.1. I am unable to sign up a user. The sqlite3 database also remains empty, so I don't think its just the issue of flash messages and the users aren't being entered. Some people have addressed various issue with Rails 7 / Devise by adding the following to config/initializers/devise.rb:

config.navigational_formats = ['*/*', :html, :turbo_stream]