/Python/Django/Cant use foreign key in list_display django

Cant use foreign key in list_display django

List_display django foreign key

class UserAdmin(admin.ModelAdmin):
    list_display = (..., 'get_author')

    def get_author(self, obj):
        return obj.book.author
    get_author.short_description = 'Author'
    get_author.admin_order_field = 'book__author'

Source: stackoverflow.com

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