OrderedModel intends to help you create models which can be moved up\down (or left\right) with respect to each other.

There are a few simple steps to follow to make your models orderable:

1. git clone git://github.com/kirelagin/django-orderedmodel.git orderedmodel
2. Add orderedmodel application to your project
3. Derive your Model from orderedmodel.OrderedModel
4. Derive your ModelAdmin from orderedmodel.OrderedModelAdmin
5. Set modelClass variable in your ModelAdmin
6. Add reorder field to yout ModelAdmin's list_display
7. Enjoy!

Now you can use order_by('order') in your query to get instances of your model in desired order (actually it is not neccessary to call order_by explicitly unless you have changed default ordering in your model's Meta).

Suppose you have a django app called testapp. You need an orderable model TestModel.

models.py:

from django.db import models
from orderedmodel import OrderedModel

class TestModel(OrderedModel):
  name = models.CharField(max_length=30)

admin.py:

from django.contrib import admin
from orderedmodel import OrderedModelAdmin

from testapp.models import TestModel


class TestModelAdmin(OrderedModelAdmin):
  modelClass = TestModel

  list_display = ['name', 'reorder']

admin.site.register(TestModel, TestModelAdmin)

Yep! Now if you create several instances of your model and look into admin site you'll see something like this: