Quote problem with string primary keys in the admin panel

[jedie]

I have a table with a CharField primary key:

class PagesInternal(models.Model):
    name = models.CharField(primary_key=True, maxlength=150)
    ...

I get a error, if i edit a entry (with pk='page_admin.edit_page') with the django admin panel:

Traceback (most recent call last):
File "./django/core/handlers/base.py" in get_response
  72. response = middleware_method(request, callback, callback_args, callback_kwargs)
File "./PyLucid/middlewares/pagestats.py" in process_view
  45. response = view_func(request, *view_args, **view_kwargs)
File "./django/contrib/admin/views/decorators.py" in _checklogin
  55. return view_func(request, *args, **kwargs)
File "./django/views/decorators/cache.py" in _wrapped_view_func
  39. response = view_func(request, *args, **kwargs)
File "./django/contrib/admin/views/main.py" in change_stage
  324. manipulator = model.ChangeManipulator(object_id)
File "./django/db/models/manipulators.py" in __init__
  261. self.original_object = self.manager.get(pk=obj_key)
File "./django/db/models/manager.py" in get
  73. return self.get_query_set().get(*args, **kwargs)
File "./django/db/models/query.py" in get
  258. obj_list = list(clone)
File "./django/db/models/query.py" in __iter__
  111. return iter(self._get_data())
File "./django/db/models/query.py" in _get_data
  478. self._result_cache = list(self.iterator())
File "./django/db/models/query.py" in iterator
  186. cursor.execute("SELECT " + (self._distinct and "DISTINCT " or "") + ",".join(select) + sql, params)
File "./django/db/backends/util.py" in execute
  23. 'sql': smart_unicode(sql) % convert_args(params),
File "./django/db/backends/util.py" in convert_args
  50. return tuple([to_unicode(val) for val in args])
File "./django/db/backends/util.py" in
  48. to_unicode = lambda s: force_unicode(s, strings_only=True)
File "./django/utils/encoding.py" in force_unicode
  42. s = unicode(s, encoding, errors)

  UnicodeDecodeError at /_admin/PyLucid/pagesinternal/page_admin.edit_page/
  'utf8' codec can't decode byte 0xad in position 4: unexpected code byte

The problem is not directly this UnicodeDecodeError! It's a problem with the quote()/unquote() routines in django.contrib.admin.views.main.py and the character combination "_ad" (a valid hex digits).

The real problem is: The primary key string runs through unquote(), but it doesn't run through quote() previously! Probably the error is in change_stage(). I don't known why quote() is not used.

btw. I use a work-a-round and replace all underscores to spaces :-/

A discuss exists here:
​http://groups.google.com/group/django-developers/browse_thread/thread/e1ed7f81e54e724a/aacfe0f3d49217c9

[Brian Rosner]

This should be fixed before the merge of newforms-admin into trunk. Marking as a blocker.