verify captcha only when captcha keys present

app/controllers/application_controller.rb

@@ -7,4 +7,9 @@ class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
+
+  def verify_captcha?(resource)
+    return true unless recaptcha_keys?
+    verify_recaptcha(model: resource)
+  end
 end

app/controllers/debates_controller.rb

@@ -25,7 +25,7 @@ class DebatesController < ApplicationController
   def create
     @debate = Debate.new(debate_params)
     @debate.author = current_user
-    if verify_captcha? and @debate.save
+    if verify_captcha?(@debate) and @debate.save
       redirect_to @debate, notice: t('flash.actions.create.notice', resource_name: 'Debate')
     else
       render :new
@@ -51,9 +51,4 @@ class DebatesController < ApplicationController
       raise ActiveRecord::RecordNotFound unless @debate.editable_by?(current_user)
     end
 
-    def verify_captcha?
-      return true unless recaptcha_keys?
-      verify_recaptcha(model: @debate) 
-    end
-
 end

app/controllers/registrations_controller.rb

@@ -1,7 +1,8 @@
 class RegistrationsController < Devise::RegistrationsController
+  include RecaptchaHelper
 
   def create
-    if verify_recaptcha
+    if verify_captcha?(resource)
       super
     else
       build_resource(sign_up_params)