Hello, I realize this post is from 2010, but I also had this problem as of July 12 2012. It's still one of the first results in a search for the error, so I'm posting for future googlers.
According to the Django Model reference<https://docs.djangoproject.com/en/dev/ref/models/instances/?from=olddocs>, you should avoid overriding the __init__ method when inheriting from Model, especially if the signature changes. They recommend to instead add a custom manager to handle this. On Monday, July 5, 2010 7:51:51 PM UTC-7, jcage wrote: > > Hi everyone. I'm quite new to python and django. I was wondering if > anyone could shed some light on this topic : > > My models.py contains the classes QuestionSet and Question, which > inherits the former. > In the shell, I define a Question object as follows > > q1 = Question(script = "How are you?", comment = "no comment", order = > 1) > > > but an attempt to run q1.save() results in the following error : > > >>> q1.save() > Traceback (most recent call last): > File "<console>", line 1, in <module> > File "/Library/Frameworks/Python.framework/Versions/2.6/lib/ > python2.6/site-packages/django/db/models/base.py", line 435, in save > self.save_base(using=using, force_insert=force_insert, > force_update=force_update) > File "/Library/Frameworks/Python.framework/Versions/2.6/lib/ > python2.6/site-packages/django/db/models/base.py", line 447, in > save_base > using = using or router.db_for_write(self.__class__, > instance=self) > File "/Library/Frameworks/Python.framework/Versions/2.6/lib/ > python2.6/site-packages/django/db/utils.py", line 133, in _route_db > return hints['instance']._state.db or DEFAULT_DB_ALIAS > AttributeError: 'Question' object has no attribute '_state' > > > > The class definitions are : > > class QuestionSet(models.Model): > title = models.CharField(max_length=100) > description = models.TextField() > order = models.IntegerField() > > def __init__(self, *args, **kwargs): > self.title = kwargs.get('title','Default Title') > self.description = kwargs.get('description', 'DefDescription') > self.order = kwargs.get('order', 0) > > > class Question(QuestionSet): > script = models.CharField(max_length=200) > comment = models.TextField() > > > def __init__(self, *args, **kwargs): > QuestionSet.__init__(self, args, kwargs) > self.script = kwargs.get('script', "undefined") > self.comment = kwargs.get('comment', "no comment") > > > > > Would greatly appreciate any suggestions -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/S6Q6RbkKMNYJ. To post to this group, send email to django-users@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.
