Thanks, Tom. So, I've changed my code slightly.....but I'm still getting an
error. I'm pretty much following exactly what is in the Django docs as well.
I'm wondering if it's because I have my models in different modules. That
shouldn't matter though should it? Maybe I'm doing something wrong with the
string syntax. More help would be appreciated.
Updated files:
*models/hoods.py*
<import Restaurant>
class Hood(AbstractDateModel):
name = models.CharField(unique=True)
restaurants=models.ManyToManyField(Restaurant,
through='restaurant_hood_map.RestaurantHoodMap')
class Meta:
db_table = "hoods"
managed=False
app_label="delivery"
*models/restaurants.py*
class Restaurant(AbstractDateModel):
name=models.ForeignKey(CompanyName)
class Meta:
db_table="restaurants"
managed=False
app_label="delivery"
*models/restaurant_hood_map.py*
<import Restaurant and Hood>
class RestaurantHoodMap(models.Model):
restaurant = models.ForeignKey(Restaurant)
hood = models.ForeignKey(Hood)
class Meta:
db_table="restaurant_hood_map"
managed=False
app_label="delivery"
.....Ok, so that's exactly what is in the Django Doc:
https://docs.djangoproject.com/en/1.3/topics/db/models/#intermediary-manytomany
However, here's the error I am getting this thing at the command line:
>>> from models.restaurant_hood_map import RestaurantHoodMap
>>> RestaurantHoodMap.objects.all()
[<RestaurantHoodMap: RestaurantHoodMap object>]
>>> RestaurantHoodMap.objects.all()[0]
<RestaurantHoodMap: RestaurantHoodMap object>
>>> RestaurantHoodMap.objects.all()[0].hood
<Hood: Hood object>
>>> RestaurantHoodMap.objects.all()[0].hood.name
u'Westlands'
>>> RestaurantHoodMap.objects.all()[0].hood.restaurants
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "C:\Python\lib\site-packages\django\db\models\fields\related.py",
line 722, in __get__
RelatedManager = create_many_related_manager(superclass, self.field.rel)
File "C:\Python\lib\site-packages\django\db\models\fields\related.py",
line 478, in create_many_related_manager
class ManyRelatedManager(superclass):
File "C:\Python\lib\site-packages\django\db\models\fields\related.py",
line 501, in ManyRelatedManager
if rel.through._meta.auto_created:
AttributeError: 'str' object has no attribute '_meta'
Please help if you can!
Thanks.
-Jamie
On Thu, Sep 29, 2011 at 11:38 AM, Tom Evans <tevans...@googlemail.com>wrote:
> On Thu, Sep 29, 2011 at 5:20 PM, James DeMichele
> <james.demich...@redfin.com> wrote:
> > Thanks for the response, that's a completely inaccurate statement.
> >
> > Here's an example from the Django docs:
> >
> >
> https://docs.djangoproject.com/en/1.3/topics/db/models/#intermediary-manyt
> > omany
> >
> > The Group object has through="Membership".
> >
> > Although, one thing I notice is that it looks like in the Django example
> > it is only using 1 ManyToMany field (e.g. the Person model does not have
> a
> > manytomany field). Is that required? Only one of the related items can
> > have a ManyToMany declared?
> >
> > That wouldn't make a lot of sense though, right? I would want to ask for
> > all Restaurants a Hood as....and vice versa. I'd want all of the Hoods
> > that belong to a Restaurant.
> >
>
> You only place it on one side of the relationship. Django magic adds
> the appropriate methods to the other side of the relationship. DRY -
> Dont Repeat Yourself.
>
> Cheers
>
> Tom
>
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