Hello Djangousers, I'm quite young with Django, so I apologize for my question.
I just tried to do exactly what is written on OneToOneField (http:// www.djangoproject.com/documentation/models/one_to_one/) and ModelInheritance (http://code.djangoproject.com/wiki/ ModelInheritance). What I want is to retrieve a Restaurant from its Place. On "On-to-one relationships", it is written : # A Restaurant can access its place. >>> r.place <Place: Demon Dogs the place> This obvisouly works, but : # A Place can access its restaurant, if available. >>> p1.restaurant <Restaurant: Demon Dogs the restaurant> Does not work at all, I only get : AttributeError : 'Place' object has no attribute 'restaurant' I don't know where the "restaurant" attribute is defined, and it seems in the example that it's nowhere ! On "ModelInheritance", it is written (under the Part 3 : API) : E. Restaurant.objects.get(2).description 'Yuck!' That obviously works too, but : D. Place.objects.get(2).description 'Yuck!' or AttributeError? I do not get "Yuck!", I indeed get the "AttributeError : 'Place' object has no attribute 'description'" The problem is the same : where is it defined that a "Place" object can access a "description" attribute ? That's absolutely all i need to know for my own project. Currently, I have tried the following workaround : for place in Place.objects.select_related() : for restaurant in place.restaurants.all() : And this works, as in "models.py", I have written : Restaurant(models.Model) : place = models.ForeignKey(Place, db_column='place_id', related_name='restaurants') My workaround works, but needs around 2000 database connexions, where a single "LEFT JOIN" SQL request is enough. What I want is : for place in Place.objects.select_related() : restaurant = place.restaurant And I need your help to succeed. I think it is possible and I'm just too young with Django. If it is possible by "OneToOneField" AND "ModelInheritance", what is the best way ? Thank you for reading, and thank you again if, by any way, you can help me. Anthony. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
