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
15932	related_name='+' ignored in ManyToManyField validation	Fredde	nobody	"According to the documentation (http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ForeignKey.related_name) setting related_name='+' to any relation field should prevent django from creating a related field. This also seems to be the case in the ''contribute_to_related_class'' functions. However the validation of ManyToMany fields ignors this and gives an error message anyway.

To reproduce:
{{{
#!python
class A(models.Model):
	pass

class B(models.Model):
	# This works
	fk1 = models.ForeignKey(A, related_name = '+')
	fk2 = models.ForeignKey(A, related_name = '+')
	
	# This gives a ""Accessor for m2m field 'm2m1' clashes with related m2m field 'A.+'"" error
	m2m1 = models.ManyToManyField(A, related_name = '+')
	m2m2 = models.ManyToManyField(A, related_name = '+')
}}}

The attached patch will make the validator check f.rel.is_hidden() before doing any further validation of related field names.
"	Bug	closed	Documentation	1.4-beta-1	Normal	fixed		fredrik.kers@… jann@… sean@…	Accepted	1	0	0	0	0	0