#34099: update_or_create() not saving data assigned in a model's save() method
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Reporter: Phil Gyford | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: dev
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Florian Apolloner):
Thinking about this more I am wondering if we have to go through a
deprecation path somehow for this feature/fix. The issue here is that
overriding `save` and setting attributes is not reflected in the database
which can be argued to be a dataloss bug. To be 100% clear on this: I
actually do think that the new code is correct and it is up to the user to
properly implement `save`. But since `update_fields` was not so important
in the past I can imagine users not implementing it leading to bugs that
are not discovered for a while etc… So I think this should be (it already
is) a release blocker and should not downgraded to a normal bug. The only
backwards compat fix I can envision is to hide this fix behind a setting
which users need to turn to `True` + a backwards incompatible note in the
release notes. This should pick up everyone reading the release notes or
at least running their tests with warnings enabled. Another option would
be to detect if `save` is overridden or if signals are attached to the
model and act accordingly during the "deprecation".
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Ticket URL: <https://code.djangoproject.com/ticket/34099#comment:9>
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