Benjamin W. wrote: > 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)
This statement returns a QuerySet, but in order to use the fields of CarModel surely you want a CarModel instance. Therefore you should use model = CarModel.objects.get(pk=modelId) (It's better Python style to write the keyword arguments with no spaces around the "=", reserving the space-delimited form for assignments). > 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! The error message was trying to be helpful - you just didn't realize that you don't need a QuerySet, but a model instance. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon is coming! Atlanta, Feb 2010 http://us.pycon.org/ Holden Web LLC http://www.holdenweb.com/ UPCOMING EVENTS: http://holdenweb.eventbrite.com/ -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
