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
12760	related models with Foreignkey.null=True must not get deleted on delete of their relation	defaultwombat	nobody	"The ""delete related objects"" process appears bugged to me.
In some lines of the code it looks like the intention was to set foreignkeys of related objects to null if possible, instead of deleting the object. Nevertheless the deletion does happen.

This is only about Realtions with Foreignkey(..,null=True). Other relations work as intended.

=== Problem 1: ===
Related Objects get deleted during delete_objects()

=== Problem 2: ===
Subrelation of related objects get collected during _collect_sub_objects()


Please have a look at the test file. 


"		closed	Database layer (models, ORM)	1.1		duplicate	delete foreignkey null	kanu@… plandry@…	Unreviewed	0	0	0	0	0	0