#29321: when instance.delete() while cause memory leak
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Reporter: yywing | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 2.0
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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{{{
class A(models.Model):
xxxxxxx
class B(models.Model):
a = models.ForeignKey(A, on_delete=models.CASCADE)
xxxxx
class C(models.Model):
b = models.ForeignKey(B, on_delete=models.CASCADE)
xxxxxx
A.objects.first().delete()
}}}
When I delete an instance of A, if A has is related with many B and B is
related with many C, then it will cause memory leak.
And I found django on_delete has no effect at SQL level.
And I really want that when I delete A ,related B is deleted.
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Ticket URL: <https://code.djangoproject.com/ticket/29321>
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