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
17879	Regression in serializers when using natural keys	Dan Fairs	Karen Tracey	"The Python serializer's `handle_fk_field()` method now no longer handles the case where a related object is None and natural keys are in use. The problem appears to have been introduced in this changeset:

 https://code.djangoproject.com/changeset/17439

The code now no longer checks to see if the `related` object is not `None` before attempting to call `natural_key()` on it."	Bug	closed	Core (Serialization)		Release blocker	fixed			Accepted	1	0	0	0	0	0