I have a simple QuerySetPaginator? where I am using a QuerySet? with values() as the source. This used to work before queryset-refactor branch was merged, but now has stopped working.
In [1]: from thebitguru.nodes.models import *
In [2]: from django.core.paginator import QuerySetPaginator
In [3]: queryset = ContentNode.objects.values("id","title")
In [4]: paginator = QuerySetPaginator(queryset, 10)
In [5]: page = paginator.page(1)
---------------------------------------------------------------------------
AssertionError Traceback (most recent call last)
/storage/important/Development/django/thebitguru/<ipython console> in <module>()
/storage/important/Development/django/packages/django_temp_trunk/django/core/paginator.py in page(self, number)
27 def page(self, number):
28 "Returns a Page object for the given 1-based page number."
---> 29 number = self.validate_number(number)
30 bottom = (number - 1) * self.per_page
31 top = bottom + self.per_page
/storage/important/Development/django/packages/django_temp_trunk/django/core/paginator.py in validate_number(self, number)
18 if number < 1:
19 raise InvalidPage('That page number is less than 1')
---> 20 if number > self.num_pages:
21 if number == 1 and self.allow_empty_first_page:
22 pass
/storage/important/Development/django/packages/django_temp_trunk/django/core/paginator.py in _get_num_pages(self)
44 "Returns the total number of pages."
45 if self._num_pages is None:
---> 46 hits = self.count - 1 - self.orphans
47 if hits < 1:
48 hits = 0
/storage/important/Development/django/packages/django_temp_trunk/django/core/paginator.py in _get_count(self)
68 def _get_count(self):
69 if self._count is None:
---> 70 self._count = self.object_list.count()
71 return self._count
72 count = property(_get_count)
/storage/important/Development/django/packages/django_temp_trunk/django/db/models/query.py in count(self)
182 return len(self._result_cache)
183
--> 184 return self.query.get_count()
185
186 def get(self, *args, **kwargs):
/storage/important/Development/django/packages/django_temp_trunk/django/db/models/sql/query.py in get_count(self)
220 obj.select = []
221 obj.extra_select = {}
--> 222 obj.add_count_column()
223 data = obj.execute_sql(SINGLE)
224 if not data:
/storage/important/Development/django/packages/django_temp_trunk/django/db/models/sql/query.py in add_count_column(self)
1343 else:
1344 assert len(self.select) == 1, \
-> 1345 "Cannot add count col with multiple cols in 'select': %r" % self.select
1346 select = Count(self.select[0])
1347 else:
AssertionError: Cannot add count col with multiple cols in 'select': [('nodes_contentnode', 'id'), ('nodes_contentnode', 'title')]
I found a similar report at: http://groups.google.com.au/group/django-users/browse_thread/thread/b39cd188847c4f94
