def delete(self, doc):
        if doc.id is None:
            raise DatabaseException('Document does not have id')
        if doc.sid is None:
            try:
                rs = self.db.docs.remove({'id': doc.id}, safe=True)
                assert rs['n'] == 1
            except Exception as e:
                raise DatabaseException(e)
            return None
        doc.data = None
        return self.update(doc)
def reverse(self, request, view_name):
        """
        Returns the URL of this tenant.
        """
        http_type = 'https://' if request.is_secure() else 'http://'

        domain = get_current_site(request).domain

        url = ''.join((http_type, self.schema_name, '.', domain, reverse(view_name)))

        return url