def _analytics_script(self, tags, caller):
     # TODO: filter by current site
     # when m2m relations will be ready)
     #code_pieces = Analytics.query().on_site() 
     code_pieces = Analytics.query();
     if tags:
         names = tags.split(',')
         code_pieces = code_pieces.filter(name__in=names)
     code = code_pieces.values_list('code', flat=True)
     return "\r\n".join(code)