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
34090	ordering of ManyToManyField in admin shows objects multiple times	spechtx	nobody	"I might came across a possible optimization in the admin:

When there is a model with a ManyToManyField and you set this field in the ""ordering"" setup in the admin setup, the object will we shown as many times in the admin, as there are relations stored in the m2m field.

In this example, when the ""type"" field has 5 relations, the object will be shown 5 times in the admin.

models.py:



{{{
class RelatedM2M(models.Model):
choice = models.CharField(max_length=255, unique=True)
description = models.TextField(blank=True)

class ModelName(models.Model):
id_uuid = models.UUIDField(...)
timestamp_created = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=255)
type = models.ManyToManyField(RelatedM2M, related_name='type')
type_intermediate = models.ManyToManyField(AnotherRelatedM2M, through='RelatedIntermediate')
geometry = models.GeometryField(...)
}}}



admin.py:


{{{
@admin.register(ModelName)
classModelNameAdminView(admin.GISModelAdmin):
inlines = (RelatedIntermediateInline,)
autocomplete_fields = ['...']
ordering = ['name', 'type', 'timestamp_created', ]
}}}


"	Cleanup/optimization	new	contrib.admin	4.1	Normal				Unreviewed	0	0	0	0	0	0