#33335: Detecting uniqueness doesn't work for models with functional unique
constraints.
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Reporter: Hervé Le Roy | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: 4.0
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 Mariusz Felisiak):
[https://github.com/django/django/blob/d3f4c2b95d2a13a5d9bc0e6413dfdbab21388822/django/db/models/base.py#L1063-L1119
Model._get_unique_checks()] and related methods don't handle unique
constraints with expressions, because `_get_unique_checks()` returns a
constraint without fields which is violated when there are any rows. I can
try to solve it on Monday, unless someone does on the weekend.
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Ticket URL: <https://code.djangoproject.com/ticket/33335#comment:6>
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