I have two models, model1 and model2, where model1 has a ForeignKey
reference to model2.
Given a list of model1 objects, I need to determine which of these are
used as a foreign key by a model2 object, and return that list. This
is my current effort:
returnList=[]
for model1 in modelList:
model2List=model1.model2_set.distinct()
if len(model2List) !=0:
returnList.append(model1)
return returnList
There are quite many model2 objects in my database, so this approach
is rather slow. I'm guessing there is a more clever way to solve my
problem, but I'm quite new to both django and python. Can anybody
please give me a hint of a better solution?
Thanks!
Odd-R.
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