Rails 4 Devise 3.1.1 ActionController::UnknownFormat in Devise::RegistrationsController#new

Question

I am working on a Rails 4 app using Devise 3.1.1 for user authentication. When I click on /users/sign_up.user link Rails throws following exception:

ActionCo         


        

Answer 1

I've just resolved this problem also.

The solution is to revert all paths to Devise default ones, meaning to say no _user infix.

Note that we are not able to test in console these code:

user = User.all.sample
app.new_registration_path(user)

because Devise use its helper to transform the url automatically internally so we cannot test from outside.