Move private method to a more reusable location

This method will be used by any translatable model that uses pg_search
feature so it's better to have it within globalizable model concern so
all translatable models can use it.

app/models/concerns/globalizable.rb

@@ -20,6 +20,18 @@ module Globalizable
     if self.paranoid? && translation_class.attribute_names.include?("hidden_at")
       translation_class.send :acts_as_paranoid, column: :hidden_at
     end
+
+    private
+
+    def searchable_globalized_values
+      values = {}
+      translations.each do |translation|
+        Globalize.with_locale(translation.locale) do
+          values.merge! searchable_translations_definitions
+        end
+      end
+      values
+    end
   end
 
   class_methods do

app/models/debate.rb

@@ -165,16 +165,4 @@ class Debate < ApplicationRecord
     orders << "recommendations" if Setting["feature.user.recommendations_on_debates"] && user&.recommended_debates
     return orders
   end
-
-  private
-
-    def searchable_globalized_values
-      values = {}
-      translations.each do |translation|
-        Globalize.with_locale(translation.locale) do
-          values.merge! searchable_translations_definitions
-        end
-      end
-      values
-    end
 end