Auto sign up after registration

Auto Sign Up after registration

# config/doorkeeper
resource_owner_authenticator do
  user = # ... the_code_that_finds_user, varies from app to app, warden.user works if you do Devise
  if user
    user
  else
    redirect_to(login_or_register_path(after_login_path: request.full_path)
  end
end

# in login controller
def login
  user = the_code_to_login_user # varies from app to app

  if user
    login(user)

    if params[:after_login_path] # this you need to make sure to pass from links to initial redirect path
      redirect_to(params[:after_login_path]
    end
  else
    # handle bad username and password
  end
end

# in register user controller
def create
  user = User.new(permitted_user_params)
  if user.save
    login(user)

    if params[:after_login_path] # this you need to make sure to pass from links to initial redirect path
      redirect_to(params[:after_login_path]
    end
  else
    # handle invalid user
  end
end

Check out for additional info: https://github.com/doorkeeper-gem/doorkeeper/issues/955