Never can pass Django model objects to Celery tasks?

Using Django
1

I am grateful for Celery integration with Django. It is great for things

like Celery tasks that send emails.

I understand that Celery tasks cannot accept Django model objects as arguments. Is that a

big limitation? There are lots of things that would be nice to push to Celery if possible that

involve Django model objects like updates and deletions no?

Thanks,

chris

2

Typically you pass just the primary key(s) of the model. The first line then does a Model.objects.get(pk=model_pk)

If it doesn’t exist then you can trigger a retry of the task.

The benefit of this approach is you get the latest version of the model over a potentially stale version passed through memory. Also data needs to be serialized and deserialized to be stored on the queue, so sticking to simpler data types will make future maintenance/upgrades easier.

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