We needed to override the default QuerySet delete function to deal with a client problem that we were facing
Yes This is monkey-patching, and probably bad practice but if anyone needs to conditionally override the cascading delete that django does at the application level from a queryset, this is how to do it
from django.db.models.query import QuerySet
#save original delete method
orrigdelete = QuerySet.delete
def showdelete(self):
#add on to delete method
for test in self:
if isinstance(test, YourObject):
raise Exception('someone tried to delete your object')
return
else:
break
#call original delete
return orrigdelete(self)
#set the queryset delete as our new method
QuerySet.delete = showdelete