Method get_source_fields

django/db/models/expressions.py:1685–1687

(self)

        return c

    def get_source_fields(self):
        # We're only interested in the fields of the result expressions.
        return [self.result._output_field_or_none]

    def as_sql(self, compiler, connection, template=None, **extra_context):
        connection.ops.check_expression_support(self)