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import functools
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from django.db import transaction
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from celery.app.task import Task
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class DjangoTask(Task):
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"""
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Extend the base :class:`~celery.app.task.Task` for Django.
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Provide a nicer API to trigger tasks at the end of the DB transaction.
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"""
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def delay_on_commit(self, *args, **kwargs) -> None:
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"""Call :meth:`~celery.app.task.Task.delay` with Django's ``on_commit()``."""
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transaction.on_commit(functools.partial(self.delay, *args, **kwargs))
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def apply_async_on_commit(self, *args, **kwargs) -> None:
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"""Call :meth:`~celery.app.task.Task.apply_async` with Django's ``on_commit()``."""
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transaction.on_commit(functools.partial(self.apply_async, *args, **kwargs))
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