hi
there isnt a many to many relationship here, its down the 'is a ... has a' bit
of OO
one manufacturer makes (one car design that has a number of (models with a set
of features))
class manufacturer
{
list of designs(cardesign)
}
class cardesign
{
list of models(model)
}
class model
{
list of features
}
cheers
michael
----- Original Message ----
From: Benjamin W. <[email protected]>
To: Django users <[email protected]>
Sent: Sun, December 27, 2009 4:37:51 PM
Subject: how to get ManyToMany relations?
Hi there,
I've problems to access manyToMany relartions.
I got the following model:
class ModelType(models.Model):
description = models.CharField(max_length=100)
def __unicode__(self):
return u"%s" % (self.description)
class CarModel(models.Model):
description = models.CharField(max_length=100)
order = models.IntegerField(null=True)
modelTypes = models.ManyToManyField(ModelType)
def __unicode__(self):
return u"%s" % (self.description)
Now I want the ModelTypes for a specfic CarModel.
I thougt it should be something like this:
model = CarModel.objects.filter(pk = modelId)
for m in model.modelTypes.all():
data = data+m.description+'|'
But I get this error:
QuerySet object has no attribute modelType.
Thanks for your help!
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