redirect users back on registration failure

app/controllers/registrations_controller.rb

@@ -18,10 +18,10 @@ class RegistrationsController < Devise::RegistrationsController
       Rails.logger.info("event=registration status=successful user=#{@user.diaspora_handle}")
     else
       @user.errors.delete(:person)
-      
+
       flash[:error] = @user.errors.full_messages.join(" - ")
       Rails.logger.info("event=registration status=failure errors='#{@user.errors.full_messages.join(', ')}'")
-      render :new
+      redirect_to :back
     end
   end
 
@@ -50,6 +50,6 @@ class RegistrationsController < Devise::RegistrationsController
       @invite ||= InvitationCode.find_by_token(params[:invite][:token])
     end
   end
-  
+
   helper_method :invite
 end

spec/controllers/registrations_controller_spec.rb

@@ -112,9 +112,9 @@ describe RegistrationsController do
         flash[:error].should_not be_blank
       end
 
-      it "re-renders the form" do
+      it "redirects back" do
         get :create, @invalid_params
-        response.should render_template("registrations/new")
+        response.should be_redirect
       end
     end
   end