ActionController::InvalidAuthenticityToken in RegistrationsController#create

Question

Hi I am using Devise for my user authentication suddenly my new user registration was not working.

this was error I am getting.

ActionController::In         


        

Answer 1

Just spent the entire morning debugging this, so I thought I should share this here in case someone faces a similar issue when updating rails to 5.2 or 6.

I had 2 problems

1) Can't verify CSRF token authenticity.

and, after added skipping verification,

2) request would go through but user still wasn't logged in.

I wasn’t caching in development

  if Rails.root.join('tmp', 'caching-dev.txt').exist?
    config.action_controller.perform_caching = true
    config.action_controller.enable_fragment_cache_logging = true

    config.cache_store = :memory_store
    config.public_file_server.headers = { 'Cache-Control' => "public, max-age=#{2.days.to_i}" }
  else
    config.action_controller.perform_caching = false

    config.cache_store = :null_store
  end

And in session_store

config.session_store :cache_store,  servers: ... 
    
    

I guess app was trying to store session in cache, but it was null - so it wasn’t logging in. 

after I ran

bin/rails dev:cache

which started caching - login started to work.

You may need to

• Rotate master.key
• Rotate credentials.yml.enc
• remove secrets.yml