James, I'm thinking about my last question more. If each object of the given type must be unique, there must be a manager in Django which keeps track of uniqueness. I will start searching for how I check for unique objects, but if you have a quick response, that will help.
Jim On Tuesday, May 23, 2017 at 6:44:01 PM UTC-4, [email protected] wrote: > > I have a model class, 'A_base', and a 2nd model class, 'A_derived'. When I > save an object of A_derived, I want the data from both my base and derived > class to be saved. > > Example code looks like this: > > class A_base(models.model): > name = models.CharField(max_length=50) > > class A_derived(A_base): > role = models.CharField(max_length=50) > > > So when I call save(), I want to save an instance of the derived object, > including the data in the base class into my sqlite3 database. I would like > my code to look like this: > > ... > derived_obj = A_derived.objects.get(name="john") > derived_obj.role = "parent" > derived_obj.save() > ... > > My question is whether the save method will save 'role' to the A_derived > table and save 'name' to the A_base table? Or do I have to override the > save method so that it saves 'role' and then calls the base class save > method to save 'name'? > > I tried doing this using the default save method and it created a stack > trace, so I'm guessing that I am expecting too much from the default save > method. > > Jim A. > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/9776663f-45a4-485d-9a2c-4e50c3e6e5f9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
