regression in django-admin: list_editable doesn't work when pagination

[Velmont]

Given the following code:

from django.db import models

class Member(models.Model):
    name = models.CharField(max_length=200, unique=True)

from django.contrib import admin

class MemberAdmin(admin.ModelAdmin):
    list_display = ('pk', 'name')
    list_editable = ('name',)
    list_per_page = 2

admin.site.register(Member, MemberAdmin)

And add 3 items (so that it paginates, you could also add 101 objects in standard conf if that floats your boat).

Et voilá:

AssertionError: Cannot reorder a query once a slice has been taken.

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/admin/mytestapp/member/?p=0

Django Version: 1.4b1
Python Version: 2.7.2
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'mytestapp',
 'django.contrib.admin')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/home/odin/tmp/django-list_editable/env/src/django/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/contrib/admin/options.py" in wrapper
  368.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/views/decorators/cache.py" in _wrapped_view_func
  89.         response = view_func(request, *args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/contrib/admin/sites.py" in inner
  196.             return view(request, *args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/utils/decorators.py" in _wrapper
  25.             return bound_func(*args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/home/odin/tmp/django-list_editable/env/src/django/django/utils/decorators.py" in bound_func
  21.                 return func(self, *args2, **kwargs2)
File "/home/odin/tmp/django-list_editable/env/src/django/django/contrib/admin/options.py" in changelist_view
  1215.             formset = cl.formset = FormSet(queryset=cl.result_list)
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/models.py" in __init__
  424.         super(BaseModelFormSet, self).__init__(**defaults)
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/formsets.py" in __init__
  50.         self._construct_forms()
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/formsets.py" in _construct_forms
  114.         for i in xrange(self.total_form_count()):
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/formsets.py" in total_form_count
  90.             initial_forms = self.initial_form_count()
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/models.py" in initial_form_count
  429.             return len(self.get_queryset())
File "/home/odin/tmp/django-list_editable/env/src/django/django/forms/models.py" in get_queryset
  471.                 qs = qs.order_by(self.model._meta.pk.name)
File "/home/odin/tmp/django-list_editable/env/src/django/django/db/models/query.py" in order_by
  753.                 "Cannot reorder a query once a slice has been taken."

Exception Type: AssertionError at /admin/mytestapp/member/
Exception Value: Cannot reorder a query once a slice has been taken.

[Velmont]

small test project

[Carl Meyer]

Confirmed that this bug is present in trunk, and not in 1.3.X, which makes it a regression and a release blocker. Thanks for the report!

[anonymous]

This was actually already reported in #16819.

[Julien Phalip]

Oops, that was me.