Method set_rollback

django/db/backends/base/base.py:502–510

Set or unset the "needs rollback" flag -- for *advanced use* only.

(self, rollback)

        return self.needs_rollback

    def set_rollback(self, rollback):
        """
        Set or unset the "needs rollback" flag -- for *advanced use* only.
        """
        if not self.in_atomic_block:
            raise TransactionManagementError(
                "The rollback flag doesn't work outside of an 'atomic' block."
            )
        self.needs_rollback = rollback

    def validate_no_atomic_block(self):
        """Raise an error if an atomic block is active."""