id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
6818	Generic Relations, doesn't seem to delete all related objects.	Niklas Collin	nobody	"Django doesn't seem to delete all related objects.[[BR]]
Below: an owner has property has 2 resource.[[BR]]
Deleting the owner will delete the property but not the resources[[BR]]

{{{
#!python
class Property(models.Model):
    owner = generic.GenericForeignKey()        
    content_type = models.ForeignKey(ContentType)
    object_id = models.PositiveIntegerField()

class Resource(models.Model):
    property = models.ForeignKey(Property, edit_inline=models.STACKED, num_in_admin=10) 
    language_id = models.IntegerField(default=1, core=True)
    class Meta:
        unique_together = ((""property"", ""language_id""),)   

class AnExampleOwner(models.Model):
    properties = generic.GenericRelation(Property) 
}}}

An example from the interpreter

{{{
#!python
In [2]: AnExampleOwner.objects.all().count()
Out[2]: 0L

In [3]: Property.objects.all().count()
Out[3]: 0L

In [4]: Resource.objects.all().count()
Out[4]: 0L

In [5]: o=AnExampleOwner()

In [6]: o.save()

In [7]: p=Property(owner = o)

In [8]: p.save()

In [9]: r=Resource(property=p, language_id = 1)

In [10]: r.save()

In [11]: r=Resource(property=p, language_id = 2)

In [12]: r.save()

In [13]: AnExampleOwner.objects.all().count()
Out[13]: 1L

In [14]: Property.objects.all().count()
Out[14]: 1L

In [15]: Resource.objects.all().count()
Out[15]: 2L

In [16]: o.delete()

In [17]: AnExampleOwner.objects.all().count()
Out[17]: 0L

In [18]: Property.objects.all().count()
Out[18]: 0L

In [19]: Resource.objects.all().count()
Out[19]: 2L

}}}"	Bug	closed	contrib.contenttypes	dev	Normal	duplicate	GenericForeignRelation, deletion	niklas@…	Accepted	0	0	0	0	0	0