Fwd: [django] Excluir un ítem de un dropdown en el admin de django

I have to make a parent relation between two people (brother/sister, father/mother, etc) in my projec.

I have a Person class and a child class named Firefighter. What I need it's to indicate the parent relation between the selected Firefighter and the selected Person, for that I have two dropdown in my Django Admin.

The trouble it's because Firefighter class is a child of Person class so the Firefighter item are in the two dropdowns and it shouldn't

How can I exclude the selected Firefighter item from Person's dropdown ??

Best regards!!

Rafael E. Ferrero

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