factorize method

app/models/communication/website/page/with_path.rb

@@ -29,10 +29,8 @@ module Communication::Website::Page::WithPath
     return unless published
     return if website.url.blank?
     # do not use a global Static.clean here because url has protocol with 2 slashes!
-    website_url = website.url
     # remove trailing slash if needed, because path begins with a slash
-    website_url = website_url[0..-2] if website_url.end_with?('/')
-    "#{website_url}#{Static.clean_path path}"
+    "#{Static.remove_trailing_slash website.url}#{Static.clean_path path}"
   end
 
   protected

app/services/static.rb

@@ -4,6 +4,11 @@ class Static
     path.gsub("//", '/')
   end
 
+  def self.remove_trailing_slash(string)
+    string = string[0..-2] if string.end_with?('/')
+    string
+  end
+
   def self.render(template_static, about, website)
     code = ApplicationController.render(
       template: template_static,