code: def site_prefixed(path):
      
      if path is None:
          path = ''
      if settings.DEBUG and hasattr(settings, 'APP_NAME'):
          path_prefix = '/%s' % settings.APP_NAME
      else:
          path_prefix = ''
      if path:
          # We have an actual path instead of generating a prefix that will
          # be placed in front of static urls (ie. {{'pricing'|site_prefixed}}
          # insted of {{''|site_prefixed}}{{ASSET_URL}}).
          path_prefix += '/'
          if path.startswith('/'):
              path = path[1:]
      return urljoin(path_prefix, path)
docs: *Mockup*: adds the path prefix when required.