bankid-suggestion.rb

# Obs inte testat såklart.

class BankidAuthController
  def callback # omniauth? callback
    personnummer = params[:personnummer] # from bankid callback
    bankid_user = BankidUser.first_or_create(personnummer: personnummer)
    
    if bankid.user.present?
      sign_in_and_redirect bankid_user.user # Devise method
    else
      session[:bankid_user_id] = bankid_user.id
      redirect_to custom_registration_path
    end
  end
end

class CustomRegistrationController
  before_action do
    # Redirecta till vanlig signup om det inte finns bankid_user_id i session
    redirect_to new_user_session_path unless session[:bankid_user_id].present?
  end

  def new
    @user = User.new
  end

  def create
    user = current_bankid_user.user.create(user_params)
    sign_in_and_redirect user # Devise method
  end

  private
    def current_bankid_user
      @current_bankid_user ||= BankidUser.find(session[:bankid_user_id])
    end

    def user_params
      # ...
    end
end