(self, records, field)
Return the ids of ``records`` that have no value for ``field``.
Return the ids of ``records`` that have no value for ``field``.
Return the ids of records that have no value for field .
def get_missing_ids(self, records, field):
        """ Return the ids of ``records`` that have no value for ``field``. """
        field_cache = self._get_field_cache(records, field)
        for record_id in records._ids:
            if record_id not in field_cache:
                yield record_id
def get_missing_ids ( self , records , field ) : field_cache = self . _get_field_cache ( records , field ) for record_id in records . _ids : if record_id not in field_cache : yield record_id