def build_rdn(self):
        """
        Build the Relative Distinguished Name for this entry.
        """
        bits = []
        for field in self._meta.fields:
            if field.db_column and field.primary_key:
                bits.append("%s=%s" + (field.db_column,
                                       getattr(self, field.name)))
        if not len(bits):
            raise Exception("Could not build Distinguished Name")
        return '+'.join(bits)
dataset/ETHPy150Open django-ldapdb/django-ldapdb/ldapdb/models/base.py/Model.build_rdn/operator `%` -> `+`