def _load_exclude_users(self, site_id):
"""Load user ids from login in the range. Used for performing negative logic"""
exclude = self._form.get('exclude', '')
if exclude:
results = Session.query(distinct(LoginRecord.user_id)).filter(
LoginRecord.plone_site_id==site_id,
LoginRecord.timestamp>=self._start,
LoginRecord.timestamp<=self._end).all()
return [user[0] for user in results]
return None
