#36773: ManyToMany related manager .count() returns 0 while .all().count()
returns
correct value (Django 5.2.9 and 6.0.0)
-------------------------------------+-------------------------------------
Reporter: Daniel Davtyan | Owner: (none)
Type: Bug | Status: new
Component: Database layer | Version: 6.0
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: count, django, orm | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Description changed by Daniel Davtyan:
Old description:
> Environment
>
> Django: 5.2.9
>
> Python: 3.12.x
>
> Database: PostgreSQL
>
> OS: (e.g. Ubuntu 22.04 – fill in)
>
> The same code previously worked correctly on Django 4.x. After upgrading
> to Django 5.x (now 6.0), I see a discrepancy between ManyToMany related
> manager .count() and .all().count() in tests.
>
> This looks similar to the regression tracked as #36197, which was fixed
> for ManyToManyField related managers using a through model with to_field,
> but I am still seeing the same symptom on Django 5.2.9.
New description:
Environment
Django: 5.2.9
Python: 3.12.x
Database: PostgreSQL
OS: Ubuntu 22.04
The same code previously worked correctly on Django 4.x. After upgrading
to Django 5.x (now 6.0), I see a discrepancy between ManyToMany related
manager .count() and .all().count() in tests.
This looks similar to the regression tracked as #36197, which was fixed
for ManyToManyField related managers using a through model with to_field,
but I am still seeing the same symptom on Django 5.2.9.
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Ticket URL: <https://code.djangoproject.com/ticket/36773#comment:1>
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