(Original question was asked here: http://stackoverflow.com/questions/11506734/routing-error-no-route-matches-when-omniauth-failed-on-registration )
I am using omniauth-identity and configure its "fail on registration". My files: config/initializers/omniauth.rb OmniAuth.config.logger = Rails.logger Rails.application.config.middleware.use OmniAuth::Builder do #... provider :identity, on_failed_registration: lambda { |env| IdentitiesController.action(:new).call(env) } end config/routes.rb Wie::Application.routes.draw do root to: 'categories#index' ActiveAdmin.routes(self) devise_for :admin_users, ActiveAdmin::Devise.config match 'auth/:provider/callback', to: 'sessions#create' match 'auth/failure', to: 'sessions#failure' match 'signout', to: 'sessions#destroy', as: 'signout' resources :identities#, only: [:new] resources :categories, path: '', only: [:index] do resources :entries, path: '', only: [:index, :show] end end app/controllers/identities_controller.rb class IdentitiesController < ApplicationController def new ariane.add "New Account" @identity = env['omniauth.identity'] end end *When I have a failure on registration (passing incorrect mail), I get the following:* in browser: Routing Error No route matches {} Try running rake routes for more information on available routes. in server log: Started POST "/auth/identity/register" for 127.0.0.1 at 2012-07-16 17:35:48 +0300 (0.1ms) begin transaction Identity Exists (0.2ms) SELECT 1 AS one FROM "identities" WHERE "identities"."email" = 'foo' LIMIT 1 (0.1ms) rollback transaction Processing by IdentitiesController#new as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"HIDDEN :)>=", "name"=>"", "email"=>"foo", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "commit"=>"Register"} Rendered identities/new.html.erb within layouts/application (11.2ms) Completed 500 Internal Server Error in 44ms ActionController::RoutingError (No route matches {}): app/views/layouts/application.html.erb:35:in_app_views_layouts_application_html_erb___1224394470845933684_70120630781720' config/initializers/omniauth.rb:8:incall' config/initializers/omniauth.rb:8:in `block (2 levels) in ' Rendered /Users/ayia/.rvm/gems/ruby-1.9.3-p125@global/gems/actionpack-3.2.6/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (0.6ms) *What can be the reason for this? What did I wrong?* -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/Kq8Fm7O8oQsJ. For more options, visit https://groups.google.com/groups/opt_out.