3. How to mark a field as readonly in admin?

UMSRA has temporarily decided to stop tracking the family trees of mythological entities. You have been asked to make the father, mother and spouse fields readonly.

You can do this by:

@admin.register(Hero)
class HeroAdmin(admin.ModelAdmin, ExportCsvMixin):
    ...
    readonly_fields = ["father", "mother", "spouse"]

Your create form looks like this: