#12769: Pickle fails if fields have lazy verbose name translations
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Reporter: jtiai | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: SVN
Keywords: orm pickle query | Stage: Unreviewed
Has_patch: 0 |
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If declared model as:
{{{
from django.db import models
from django.utils.translation import ugettext_lazy as _
class TestModel(models.Model):
name = models.CharField(_('name'), max_length=12)
}}}
Using query pickle like:
{{{
from models import TestModel
import pickle
qs = TestModel.objects.filter(name__contains='foobar')
s = pickle.dumps(qs.query)
}}}
Fails with exception:
{{{
Traceback (most recent call last):
File "/home/KEYPRO/jtiai/src/django-
tests/pickle_error/showcase/tests.py", line 15, in test_pickle_query
s = pickle.dumps(qs.query)
File "/usr/lib/python2.6/pickle.py", line 1366, in dumps
Pickler(file, protocol).dump(obj)
File "/usr/lib/python2.6/pickle.py", line 224, in dump
self.save(obj)
File "/usr/lib/python2.6/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.6/pickle.py", line 419, in save_reduce
save(state)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.6/pickle.py", line 663, in _batch_setitems
save(v)
File "/usr/lib/python2.6/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.6/pickle.py", line 419, in save_reduce
save(state)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.6/pickle.py", line 663, in _batch_setitems
save(v)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 600, in save_list
self._batch_appends(iter(obj))
File "/usr/lib/python2.6/pickle.py", line 615, in _batch_appends
save(x)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 562, in save_tuple
save(element)
File "/usr/lib/python2.6/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.6/pickle.py", line 419, in save_reduce
save(state)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.6/pickle.py", line 663, in _batch_setitems
save(v)
File "/usr/lib/python2.6/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.6/pickle.py", line 419, in save_reduce
save(state)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib/python2.6/pickle.py", line 663, in _batch_setitems
save(v)
File "/usr/lib/python2.6/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.6/pickle.py", line 401, in save_reduce
save(args)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 562, in save_tuple
save(element)
File "/usr/lib/python2.6/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.6/pickle.py", line 748, in save_global
(obj, module, name))
PicklingError: Can't pickle <class 'django.utils.functional.__proxy__'>:
it's not found as django.utils.functional.__proxy__
}}}
This works perfectly with 1.1.1 so it must be a regression.
--
Ticket URL: <http://code.djangoproject.com/ticket/12769>
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