Opened 8 years ago
Closed 8 years ago
#27636 closed Bug (invalid)
The filter queryset is dynamic?
| Reported by: | renpj | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 1.10 |
| Severity: | Normal | Keywords: | queryset |
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | yes | UI/UX: | no |
Description
Here is an example:
q = ModelA.objects.filter(attr=None)
print q
Ans: <QuerySet:[]>
instance1 = ModelA.objects.create()
print q
Ans: <QuerySet:[instance1]>
It seems that the queryset is dynamic and vary with the model. Is this a bug or not?
Note:
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This is not a bug, it's documented behavior, see: https://docs.djangoproject.com/en/dev/ref/models/querysets/#when-querysets-are-evaluated
(In the future please ask questions on the django-users mailing list: https://groups.google.com/forum/#!forum/django-users rather than opening a ticket in the bug tracker.)