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
1855	Using a custom default manager can lead to un-editable objects in admin	James Bennett	nobody	"When a model's default manager overrides `get_query_set()` with anything which filters out certain objects, then those objects will be uneditable via the admin app regardless of which manager is specified for the admin to use. This is because the admin `change_stage` view uses the automatic ChangeManipulator for the model, which in turn uses the model's default manager to fetch the object to change. So if the model's default manager happens to filter in a way which excludes that object from the returned QuerySet, the ChangeManipulator will raise ObjectDoesNotExist, which in turn causes the admin to return a 404.

The only thing I can think of to solve this would be for the admin to use its own ChangeManipulator class which uses the manager specified in the model's inner Admin class to fetch the object to edit."	defect	closed	contrib.admin	dev	major	invalid			Design decision needed	0	0	0	0	0	0