Re: Object composition in django

There's a way to do what you want to do, but I don't remember out of the top of my head. I can check it out on the week, but you'll need to customize some things on the Producer's ModelAdmin, not just set the list of inlines, because, as it was said, inlines are for "children" objects (i.e. other

Re: Object composition in django

Have you tried using unique_together? You could add unique_together = ( ('type', 'producer',), ) to your Address model. There really isn't any way for the default admin to edit a second table at the same time. https://docs.djangoproject.com/en/1.4/ref/models/options/#unique-together On Feb

Re: Object composition in django

Thanks, but I've omitted related_name and I've used distinct related_names and gotten the same errors. I don't want to reuse addresses. The one-to-one relationship you describe is precisely what I'm trying to do. On Feb 14, 2013, at 1:32 AM, Jani Tiainen wrote: > Hi, > >

Re: Object composition in django

Hi, You're trying to setup one-to-one relationship. It means that producer.mailing_address does have exactly one unique Address entity. Same goes for physical_address. What you want is really ForeignKey to address which means that you reuse addresses to multiple producer.mailing_address.

Re: Object composition in django

I've considered the address-type-and-foreign-key approach you describe — and implemented it and then backed it out again — but that approach bugs me at a philosophical level. Address is then bound explicitly to Producer and instead of having two addresses each with a specific designation I can

Re: Object composition in django

Inlines are for related objects, meaning when I have a foreign key from A to B, on A there is an actual database field that points to B, but on B there's a virtual (related object) field implemented as a python method. When you have a foreign key, the way the admin shows that is just to give you a

Re: Object composition in django

You might try specifying distinct related names, just off the cuff. -Bill On Wed, Feb 13, 2013 at 2:25 PM, Ray Hatfield wrote: > Hi, > > I have a model which requires two addresses: a mailing address and a > physical address. From an OO perspective it makes sense to have

Object composition in django

Hi, I have a model which requires two addresses: a mailing address and a physical address. From an OO perspective it makes sense to have an Address class and the Producer to have Address instances as properties, but I can't seem to achieve this in django while still being able to edit the