#14645: Exclude query with multiple conditions for the same multi-value relation
not correct
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Reporter: Ben Buchwald | Owner: nobody
<bb2@…> | Status: new
Type: Bug | Version: master
Component: Database layer | Resolution:
(models, ORM) | Triage Stage: Accepted
Severity: Normal | Needs documentation: 0
Keywords: exclude manytomany | Patch needs improvement: 0
Has patch: 0 | UI/UX: 0
Needs tests: 0 |
Easy pickings: 0 |
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Comment (by chriskrusz):
Please note that this behaviour contradicts the documentation.
According to the documentation (from
[https://docs.djangoproject.com/en/1.5/topics/db/queries/#spanning-multi-
valued-relationships]):
"All of this behavior also applies to exclude(): all the conditions in a
single exclude() statement apply to a single instance (if those conditions
are talking about the same multi-valued relation). Conditions in
subsequent filter() or exclude() calls that refer to the same relation may
end up filtering on different linked objects."
But exclude actually filters each condition on a different linked object.
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Ticket URL: <https://code.djangoproject.com/ticket/14645#comment:8>
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