db_column for EmbeddedModelField

[adriencog]

Hello,

I use a lot "db_column" in my model classes, mainly to shorten field names in mongodb.
But by reinstalling django_nonrel on my environnement, I noticed that the db_column doesn't work anymore for the EmbeddedModelField.
It worked very well before and I think that the last changes on djangotoolbox broke it.

For example, with the following classes:

class MyClass (models.Model):
comments = ListField(EmbeddedModelField('Comment'))

class Comment (models.Model):
text = models.TextField(db_column='t')
date = models.DateTimeField(db_column='d')

Everytime I query MyClass, I get the following error:
'" t' is an invalid keyword argument for this function"
If I remove the db_column in the fields, it works again, but with "text" as the field name ...

Can you make a fix ?
Thanks a lot

[jonashaag]

Can you please show your particular query?

[adriencog]

The query has no particularity : sc = Score.objects.get(_id=score_id)
The error only happens when my Score instance has comments.
Besides, my class "Score" has no field "t". And when I remove all the "db_column" of the Comment class, it works just fine

[jonashaag]

Right. Could you poste a traceback? It's probably a simple typo somewhere. btw are you using the latest develop branches?

[adriencog]

I've just following these instructions : http://django-mongodb.org/topics/setup.html
I realize now that djangotoolbox comes from bitbucket and not github. This doc is still up to date ?
Anyway, this is the traceback:

Environment:

Request Method: GET
Request URL: (-- url --)

Django Version: 1.3
Python Version: 2.7.2
Installed Applications:
['django_mongodb_engine',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django_mongodb_engine',
'jn.search',
'jn.upload',
'jn.registration',
'compressor']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')

Traceback:
File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

1.                     response = callback(request, _callback_args, *_callback_kwargs)
   

   File "/Users/adriencog/Development/master/jn/../jn/search/views.py" in display_score

2.     sc = Score.objects.get(_id=int(score_id))
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/manager.py" in get

3.     return self.get_query_set().get(_args, *_kwargs)
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/query.py" in get

4.     num = len(clone)
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/query.py" in len

5.             self._result_cache = list(self.iterator())
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/query.py" in iterator

6.                 obj = model(_row[index_start:aggregate_start], *_{'**entity_exists': True})
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/base.py" in __init**

7.             setattr(self, field.attname, val)
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/djangotoolbox/fields.py" in set

8.     obj.**dict**[self.field.name] = self.field.to_python(value)
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/djangotoolbox/fields.py" in to_python

9.     return self._convert(self.item_field.to_python, value)
   

   File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/djangotoolbox/fields.py" in _convert

10.         return self._type(func(value, _args, *_kwargs) for value in values)
    

    File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/djangotoolbox/fields.py" in

11.         return self._type(func(value, _args, *_kwargs) for value in values)
    

    File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/djangotoolbox/fields.py" in to_python

12.     return self.embedded_model(**values)
    

    File "/Users/adriencog/Development/jn/env/lib/python2.7/site-packages/django/db/models/base.py" in init

13.             raise TypeError("'%s' is an invalid keyword argument for this function" % kwargs.keys()[0])
    

Exception Type: TypeError at /score/ (...)
Exception Value: 't' is an invalid keyword argument for this function

[thomasbrueggemann]

Any solution found yet? Having the same issue!

[adriencog]

I don't have any solution, I decided to switch to MongoEngine : http://mongoengine.org/
It works very well and it's not a fork of Django. I'm using it as a replacement for Django Models.
Django-nonrel was cool but as a fork, I don't think it's maintained enough (for my use case anyway)