Thanks for the follow up! On Wednesday, December 12, 2012 4:21:59 PM UTC-8, Mike Dewhirst wrote: > > I'm getting an unexpected validation error in Admin which baffles me. > Any hints appreciated ... here is the traceback > > http://dpaste.com/844972/ > > At the bottom of the traceback where the error is raised, the local vars > are ... > > self <django.forms.models.ModelChoiceField object at 0x02414890> > value u'33' > key 'pk' > > When I save the item, it auto-generates many-to-many connections to a > few standard images in the database via a through table. However there > is a rule which says "if ever these two images are connected to an item, > only keep this one and drop that one." > > I use a post-save signal to "drop that one" using ... > > Item_Pictogram.objects.filter(item=instance, pictogram=pic, > via='auto').delete() > > The local var value above being u'33' happens to be the exact pk of the > Item_Pictogram record I want to delete - I checked in Postgres. > > The pk should be an integer but I suppose that's nothing. > > Thanks for any help > > Mike >
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