Erik, as stated in documentation
<https://docs.djangoproject.com/en/1.8/ref/models/relations/#direct-assignment>,
what you said is equivalent to what i did
and the error exists yet. to have more details, here is the stack trace:
Traceback (most recent call last):
File "<console>", line 2, in <module>
File "/home/user/Workspace/src/models.py", line 155, in create_from_dict
obj.bars.clear()
File
"/usr/local/lib/python2.7/dist-packages/django/db/models/fields/related.py",
line 1253, in __get__
through=self.field.rel.through,
File
"/usr/local/lib/python2.7/dist-packages/django/db/models/fields/related.py",
line 862, in __init__
source_field = through._meta.get_field(source_field_name)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/options.py",
line 554, in get_field
raise FieldDoesNotExist('%s has no field named %r' % (self.object_name,
field_name))
FieldDoesNotExist: Foo_bars has no field named None
On Monday, August 3, 2015 at 3:01:28 PM UTC+4:30, Erik Cederstrand wrote:
>
>
> > Den 03/08/2015 kl. 08.50 skrev [email protected] <javascript:>:
> >
> > Hello Django community.
> > I have two Django models Foo and Bar that have a ManyToMany relation:
> >
> > Class Foo(models.model):
> >
> > ...
> >
> > bars = models.ManyToManyField('Bar', related_name='foos')
> > somewhere in the code, i do direct assignment to replace the relation
> with a new list:
> >
> > foo_object.bars = [bar_object_list]
>
> You can't do that, AFAIK. You need to do:
>
> foo_object.bars.clear()
> foo_object.bars.add(*bar_object_list)
>
>
> Erik
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