use inspectdb to start

On Sun, Mar 8, 2015 at 5:31 PM, Nan <ringe...@gmail.com> wrote:

>
> Hi folks --
>
> I'm building out Django models to represent a legacy PHP app's database in
> order to throw together a quick admin panel.  Everything's working great
> except that the ORM of the other application represents generic relations
> slightly differently than Django's does.  I can't modify the DB schema
> because the legacy application has to continue to run.
>
> Django uses:
>
> int content_type_id
> int object_id
>
> The existing DB essentially uses:
>
> string model_class_name
> int object_id
>
> Is there a way to get Django's ORM to use these fields to represent a GFK
> relationship so I can use it in the admin?  I can add tables, just not
> modify existing ones.  Maybe an extra 1-to-1 mapping content types to
> legacy model names would help?  Maybe writing a GenericForeignKey
> subclass?  A quick look at the source suggests there are a lot of methods
> that will need to be overridden (by copy-pasting 40 lines and changing
> one), which doesn't sound like fun to maintain in the long run.
>
> Just wondering if anyone's done this before or has any tips before I dive
> in.
>
> Thanks!
>
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