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app/helpers/application_helper.rb

@@ -5,6 +5,11 @@ module ApplicationHelper
     "tag:#{LOCAL_DOMAIN},#{date.strftime('%Y-%m-%d')}:objectId=#{id}:objectType=#{type}"
   end
 
+  def unique_tag_to_local_id(tag, expected_type)
+    Regexp.new("objectId=([\d]+):objectType=#{expected_type}").match(tag)
+    return match[1] unless match.nil?
+  end
+
   def subscription_url(account)
     add_base_url_prefix subscriptions_path(id: account.id, format: '')
   end