#16299: Django model-module doesn't support unicode_literals
-------------------------------------+-------------------------------------
Reporter: martijn.bastiaan@… | Owner: nobody
Type: Bug | Status: new
Milestone: | Component: Database layer
Version: SVN | (models, ORM)
Keywords: unicode, ForeignKey, | Severity: Normal
AttributeError | Triage Stage: Unreviewed
Has patch: 1 | Easy pickings: 1
UI/UX: 0 |
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Hello all,
When using
{{{
from __future__ import unicode_literals
}}}
in a model file, Django fails to recognize a model referenced by a string
and raises a quite obscure error message:
{{{
Traceback (most recent call last):
File "test.py", line 5, in <module>
a = article.Article.objects.get(id=57220255)
File "/usr/local/lib/django/django/db/models/manager.py", line 132, in
get
return self.get_query_set().get(*args, **kwargs)
File "/usr/local/lib/django/django/db/models/query.py", line 341, in get
clone = self.filter(*args, **kwargs)
File "/usr/local/lib/django/django/db/models/query.py", line 550, in
filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/usr/local/lib/django/django/db/models/query.py", line 568, in
_filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/usr/local/lib/django/django/db/models/sql/query.py", line 1172,
in add_q
can_reuse=used_aliases, force_having=force_having)
File "/usr/local/lib/django/django/db/models/sql/query.py", line 1060,
in add_filter
negate=negate, process_extras=process_extras)
File "/usr/local/lib/django/django/db/models/sql/query.py", line 1226,
in setup_joins
field, model, direct, m2m = opts.get_field_by_name(name)
File "/usr/local/lib/django/django/db/models/options.py", line 307, in
get_field_by_name
cache = self.init_name_map()
File "/usr/local/lib/django/django/db/models/options.py", line 339, in
init_name_map
for f, model in self.get_all_related_objects_with_model():
File "/usr/local/lib/django/django/db/models/options.py", line 371, in
get_all_related_objects_with_model
self._fill_related_objects_cache()
File "/usr/local/lib/django/django/db/models/options.py", line 393, in
_fill_related_objects_cache
if f.rel and not isinstance(f.rel.to, str) and self == f.rel.to._meta:
AttributeError: 'unicode' object has no attribute '_meta'
}}}
Model example:
{{{
insert_user = models.ForeignKey("models.User",
db_column='insertuser_id')
# Or without from __future__ import unicode_literals
insert_user = models.ForeignKey(u"models.User",
db_column='insertuser_id')
}}}
I've attached a patch.
Yours,
Martijn
--
Ticket URL: <https://code.djangoproject.com/ticket/16299>
Django <https://code.djangoproject.com/>
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