Can't stringify UUID

[pwalsh]

I use UUID fields extensively, with this 3rd party package:

https://github.com/dcramer/django-uuidfield

It returns UUID objects, and django-cacheops can't force them to strings.

Exception Value: Can't stringify UUID('0001eb7a-766d-48d6-8ef7-7d7825e5659f')

[Suor]

Did you try last master version?

[pwalsh]

Just did now, and works fine.

Thanks, this is exactly the type of queryset caching library I've been looking for.

[Suor]

I examined django-uuid code and found that you can encounter invalidation problems as UUID there is prepared too late and can be stringified differently. E.g.

SomeModel.objects.filter(uuid=UUID('12345678123456781234567812345678'))
# and
SomeModel.objects.filter(uuid='12345678123456781234567812345678')

would behave differently and one of them can be not invalidated by something like:

SomeModel.objects.create(uuid='12345678123456781234567812345678')

To workaround it you can always use StringUUID from uuidfield.fields with the same hyphenate setting as you use in your models.

I created a pull request to fix that, but it's unclear when and whether it will be merged: dcramer/django-uuidfield#32

[pwalsh]

Ah, good find, thanks.