Überschreiben Sie devise create controller action

Question

Ich erstelle eine Anwendung (der Benutzer hat viele Gruppen), in der ein bestehender Benutzer Einladungen senden kann, um Leute zum Beitritt zu einer Gruppe einzuladen. Wenn die sign_up url ein Einladungstoken hat, muss ich die standardmäßige devise Controller-Aktion für erstellen überschreiben.

Routen.rb

devise_for :users do 
  match '/users/sign_out', :to => 'devise/sessions#destroy'
  match '/users/sign_up/:invitation_token', :to => 'registrations#create'

registrations_controller.rb

class RegistrationsController < Devise::RegistrationsController
#after_filter :add_user_to_group

def new
    super
end

def create
  if !params[:invitation_token].nil?
    token = params[:invitation_token]
    @invitation = Invitation.where "token" => token 
      if !@invitation.nil?
            build_resource
            if resource.save
              if resource.active_for_authentication?
                set_flash_message :notice, :signed_up if is_navigational_format?
                sign_up(resource_name, resource)
                respond_with resource, :location => after_sign_up_path_for(resource)
              else
                set_flash_message :notice, :"signed_up_but_#{resource.inactive_message}" if is_navigational_format?
                expire_session_data_after_sign_in!
                respond_with resource, :location => after_inactive_sign_up_path_for(resource)
               end
             else
               clean_up_passwords resource
               respond_with resource
             end
    else
      flash[:notice] = "Invalid Token. Cannot signup with this Link." 
    end
  else
    super
  end
end

def after_sign_up_path_for(resource_or_scope)
  @user = current_user
  raise @user.inspect
  @invitation = Invitation.where "recipient_email" => @user.email
  if !@invitation.nil?
    @user.update_attribute(:invitation_id, @invitation.id)
    @user_group = UserGroup.new
    @user_group.user_id = @user.id
    @userGroup.group_id = @invitation.group_id
    @userGroup.save!  
  end
  after_sign_in_path_for(resource)
end

Ende

Protokolle

Started GET "/users/sign_up/83003a4fab004ef4c1934c15f7215e8dc6a57718" for 127.0.0.1 at 2012-12-11 14:53:18
Processing by RegistrationsController#create as HTML
  Parameters: {"invitation_token"=>"83003a4fab004ef4c1934c15f7215e8dc6a57718"}
  SQL (0.1ms)  BEGIN
  User Exists (1.0ms)  SELECT 1 AS one FROM `users` WHERE `users`.`name` IS NULL LIMIT 1
  User Exists (0.1ms)  SELECT 1 AS one FROM `users` WHERE `users`.`email` = '' LIMIT 1
   (0.1ms)  ROLLBACK

Dies leitet mich zum sign_up-Pfad um, führt aber die Validierungen beim Laden der Seite aus.

Email can't be blank
Password can't be blank
Name can't be blank

Logs nach der Anmeldung mit der zuvor gerenderten Seite

Started POST "/users" for 127.0.0.1 at 2012-12-11 14:56:37 +0530
Processing by Devise::RegistrationsController#create as HTML
  Parameters: {"utf8"=>"", "authenticity_token"=>"gUmNDb1Sj/ZVnXMG8t/Av0QlAYg7nAMTsSU5ZBW+s60=", "user"=>{"name"=>"Prashanth2", "email"=>"sample@sampleee.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
  SQL (0.1ms)  BEGIN
  User Exists (0.4ms)  SELECT 1 AS one FROM `users` WHERE `users`.`email` = BINARY 'sample@sampleee.com' LIMIT 1
  User Exists (0.3ms)  SELECT 1 AS one FROM `users` WHERE `users`.`name` = 'Prashanth2' LIMIT 1
  User Exists (0.2ms)  SELECT 1 AS one FROM `users` WHERE `users`.`email` = 'sample@sampleee.com' LIMIT 1
  SQL (1.1ms)  INSERT INTO `users` (`created_at`, `current_sign_in_at`, `current_sign_in_ip`, `email`, `encrypted_password`, `invitation_id`, `invitation_limit`, `last_sign_in_at`, `last_sign_in_ip`, `name`, `remember_created_at`, `reset_password_sent_at`, `reset_password_token`, `sign_in_count`, `updated_at`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)  [["created_at", Tue, 11 Dec 2012 09:26:37 UTC +00:00], ["current_sign_in_at", nil], ["current_sign_in_ip", nil], ["email", "sample@sampleee.com"], ["encrypted_password", "$2a$10$jcaLbYWNqp2sbUlAZWb38.Ls7Ku90ImOQ11k0fxJSq/mD4Zm2U1JO"], ["invitation_id", nil], ["invitation_limit", 5], ["last_sign_in_at", nil], ["last_sign_in_ip", nil], ["name", "Prashanth2"], ["remember_created_at", nil], ["reset_password_sent_at", nil], ["reset_password_token", nil], ["sign_in_count", 0], ["updated_at", Tue, 11 Dec 2012 09:26:37 UTC +00:00]]
   (108.5ms)  COMMIT
  SQL (0.1ms)  BEGIN
   (0.3ms)  UPDATE `users` SET `last_sign_in_at` = '2012-12-11 09:26:38', `current_sign_in_at` = '2012-12-11 09:26:38', `last_sign_in_ip` = '127.0.0.1', `current_sign_in_ip` = '127.0.0.1', `sign_in_count` = 1, `updated_at` = '2012-12-11 09:26:38' WHERE `users`.`id` = 12
   (127.8ms)  COMMIT