I just realized that get_form is already passed the model instance as obj, so that fixes getting he model instance (for this method at least -- hopefully I don't need to override another method that doesn't get obj). Still need a better way to customize how a form instance is initialized, though...
On Thursday, September 15, 2016 at 6:00:02 PM UTC-7, [email protected] wrote: > > Hi Tim, thanks for the reply :) > > It's not that I want to store the model instance on self.instance, it's > just the solution I was able to come up with, given the problem "I need to > get to the model instance for this HTTP request". If there's a better way > to do it, I'm all ears! > > T > > On Thursday, September 15, 2016 at 5:34:50 PM UTC-7, Tim Graham wrote: >> >> I think these ideas have been floated before. If you look through the >> Trac tickets you might find something related. However, your subclass where >> you store "self.instance" on ModelAdmin is a no no due to thread safety. >> See >> http://stackoverflow.com/questions/3388111/modeladmin-thread-safety-caching-issues >> >> for an explanation. >> >> On Thursday, September 15, 2016 at 6:53:15 PM UTC-4, [email protected] >> wrote: >>> >>> I have a ModelAdmin subclass (code at: <https://dpaste.de/0LAt>) and I >>> need to do a couple of things, but the functionality seems to be missing: >>> >>> 1. I need to access the model instance to perform some initialization, >>> but there's no instance member set. There are a few questions on Stack >>> Overflow on this topic, so I know I'm not alone. >>> >>> 2. I need to initialize my form with a parameter derived from the model >>> instance. If this were a View, I could just override get_form_kwargs and be >>> done with it, but ModelAdmin doesn't have it. >>> >>> Is there a reason why those two features are missing from ModelAdmin? >>> Maybe they could be added (and I could open a PR)? Or is there a better way >>> to do what I need to do? >>> >>> -- 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/2a245d08-91b3-4a16-a3b2-4e172d2cbcb4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
