Move account deletion to Sidekiq worker, fixes #11

app/controllers/user/registrations_controller.rb

@@ -0,0 +1,10 @@
+class User::RegistrationsController < Devise::RegistrationsController
+
+  def destroy
+    DeletionWorker.perform_async(resource.id)
+    Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name)
+    set_flash_message :notice, :destroyed if is_flashing_format?
+    yield resource if block_given?
+    respond_with_navigational(resource){ redirect_to after_sign_out_path_for(resource_name) }
+  end
+end

app/workers/deletion_worker.rb

@@ -0,0 +1,14 @@
+class DeletionWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :deletion
+
+  # @param resource_id [Integer] user id passed from Devise
+  def perform(resource_id)
+    begin
+      User.find(resource_id).destroy!
+    rescue => e
+      Rails.logger.error "failed to delete user: #{e.message}"
+    end
+  end
+end

config/routes.rb

@@ -46,7 +46,7 @@ Rails.application.routes.draw do
     get '/settings/account' => 'devise/registrations#edit', as: :edit_user_registration
     patch '/settings/account' => 'devise/registrations#update', as: :update_user_registration
     put '/settings/account' => 'devise/registrations#update'
-    delete '/settings/account' => 'devise/registrations#destroy'
+    delete '/settings/account' => 'user/registrations#destroy'
   end
 
   match '/settings/profile', to: 'user#edit', via: 'get', as: :edit_user_profile

config/sidekiq.yml

@@ -8,4 +8,5 @@ production:
 :queues:
   - share
   - paperclip
-  - mailer
+  - mailer
+  - deletion