# I have the following class structure.

class A( models.Model ):
	pass

class B( models.Model ):
	a = models.ForeignKey(A)

class C( models.Model ):
	b = models.ForeignKey(B)
	d = models.ForeignKey(D) 

class D( models.Model ):
	pass

# How do I get all objects of type D that are associated with A (all D's associated with C's associated with B's associated with A's)?