#13155: Iteration of a Many To Many Relationship raises Field Error
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Reporter: callen | Owner: nobody
Status: reopened | Milestone:
Component: Database layer (models, ORM) | Version: 1.1
Resolution: | Keywords: m2m, orm,
field error
Stage: Unreviewed | Has_patch: 0
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Comment (by callen):
Replying to [comment:5 kmtracey]:
> What is the variable bimport? Guessing the obvious -- that it is an
instance of Bimport -- I cannot recreate the problem:
>
> {{{
> >>> from ttt.models import Bimport
> >>> bimport = Bimport.objects.all()[0]
> >>> bimport.newsletters.all()
> [<Newsletter: Newsletter object>]
> >>> import django
> >>> django.get_version()
> u'1.2 beta 1 SVN-12805'
> >>> for nl in bimport.newsletters.all():
> ... print nl.name
> ...
> first
> >>>
> }}}
You're correct that bimport is just a Bimport instance. As I said, the
issue cannot be reproduced in a shell because it works for me as well.
{{{
In [1]: from bimport.models import Bimport
In [2]: bi = Bimport.objects.get(id = 20)
In [3]: for nl in bi.newsletters.all():
...: print nl
...:
Soccer America Classifieds
Youth Soccer Insider
}}}
I can do that too. However, when it's running in the actual web app:
{{{
ipdb>
>
/Users/callen/code/socceramerica/bimport/controllers.py(36)process_bimport()
35 bi.save()
---> 36 if int(bi.content_type.id) == 116:
37 code = import_subs(bi)
ipdb>
>
/Users/callen/code/socceramerica/bimport/controllers.py(37)process_bimport()
36 if int(bi.content_type.id) == 116:
---> 37 code = import_subs(bi)
38 if code == 1:
ipdb> bi
Out[0]: <Bimport: Bimport object>
ipdb> pdoc bi
Bimport(id, content_type_id, source_id, import_date, datafile, error,
status)
ipdb> pinfo bi
Type: Bimport
Base Class: <class 'bimport.models.Bimport'>
String Form: Bimport object
Namespace: Locals
File: /Users/callen/code/socceramerica/bimport/models.py
Source:
class Bimport(models.Model):
content_type = models.ForeignKey(ContentType)
source = models.ForeignKey(Source)
import_date = models.DateField(auto_now_add = True)
datafile = models.FileField(upload_to='bimport/uploads')
newsletters = models.ManyToManyField(Newsletter, help_text=None,
null=True)
error = models.CharField(max_length=200)
status = models.CharField(choices=STATUS_CHOICES, default='N',
max_length=100)
ipdb> bi.newsletters.all()
*** FieldError: Cannot resolve keyword 'bimport' into field. Choices are:
archive_column, archive_order, article, construct, day, edition,
frequency, frequency_text, from_email, html_template, id, is_public,
list_name, name, newsletterarticle, newsletterarticles, slug, subject,
subject_type, subscription, text_template, time
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/13155#comment:6>
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