django-sortedm2m 0.5.0

Drop in replacement for Django's many to many field with sorted relations

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What's new in django-sortedm2m 0.5.0:

  • Django 1.5 support. Thanks to Antti Kaihola for the patches.
  • Dropping Django 1.3 support. Please use django-sortedm2m
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BSD License 
Gregor Mullegger
ROOT \ Internet \ Django Plugins
django-sortedm2m is a drop in replacement for Django's own ManyToManyField. The provided SortedManyToManyField behaves like the original one but remembers the order of added relations.

sortedm2m requires at least django 1.2. Django 1.1 or earlier is not supported.


Imagine that you have a gallery model and a photo model. Usually you want a relation between these models so you can add multiple photos to one gallery but also want to be able to have the same photo on many galleries.

This is where you usually can use many to many relation. The downside is that django's default implementation doesn't provide a way to order the photos in the gallery. So you only have a random ordering which is not suitable in most cases.

You can work around this limitation by using the SortedManyToManyField provided by this package as drop in replacement for django's ManyToManyField.


Use SortedManyToManyField like ManyToManyField in your models:

from django.db import models
from sortedm2m.fields import SortedManyToManyField

class Photo(models.Model):
 name = models.CharField(max_length=50)
 image = models.ImageField(upload_to='...')

class Gallery(models.Model):
 name = models.CharField(max_length=50)
 photos = SortedManyToManyField(Photo)

If you use the relation in your code like the following, it will remember the order in which you have added photos to the gallery.

gallery = Gallery.objects.create(name='Photos ordered by name')
for photo in Photo.objects.order_by('name'):


SortedManyToManyField provides a custom widget which can be used to sort the selected items. It renders a list of checkboxes that can be sorted by drag'n'drop.

It's also possible to use the SortedManyToManyField with admin's raw_id_fields option in the ModelAdmin definition. Add the name of the SortedManyToManyField to this list to get a simple text input field. The order in which the ids are entered into the input box is used to sort the items of the sorted m2m relation.


from django.contrib import admin

class GalleryAdmin(admin.ModelAdmin):
 raw_id_fields = ('photos',)

Last updated on June 27th, 2012


#Django sortedm2m #sorted relations #SortedManyToManyField #ManyToManyField #Django #sortedm2m

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