Method output_field

django/db/models/expressions.py:326–333

Return the output type of this expressions.

(self)

    @cached_property
    def output_field(self):
        """Return the output type of this expressions."""
        output_field = self._resolve_output_field()
        if output_field is None:
            raise OutputFieldIsNoneError(
                "Cannot resolve expression type, unknown output_field"
            )
        return output_field

    @property
    def _output_field_or_none(self):