Make supplier signup working as expected

app/controllers/confirmations_controller.rb

@@ -1,4 +1,16 @@
 class ConfirmationsController < Devise::ConfirmationsController
+
+  # GET /resource/confirmation?confirmation_token=abcdef
+  # hack described by:
+  #   https://github.com/plataformatec/devise/pull/2728
+  # restore sign_in after confirmation behaviour. More unsafe, but
+  # customer satisfaction is dominant here
+  def show
+    super do |resource|
+      sign_in(resource_name, resource) if resource && resource.errors.empty?
+    end
+  end
+
   private
 
   def after_confirmation_path_for(resource_name, resource)

app/controllers/registrations_controller.rb

@@ -0,0 +1,9 @@
+class RegistrationsController < Devise::RegistrationsController
+
+  private
+
+  # override devise internal to allow name as sign_up param
+  def sign_up_params
+    params.require(resource_name).permit resource_class.authentication_keys + [:name, :password, :password_confirmation]
+  end
+end