How to show fields of one model dynamically in Django admin?

Question

Django

Hello. There is a need to hide some fields in the admin panel of the page model. If this is the main page, then show all fields, if not the main page, then hide some fields. That is, when editing or adding pages through the admin panel, some fields were hidden on all pages except the main one. How to implement this?

Answer 1

class SomeModelAdmin(admins.ModelAdmin):
    fields = [...]  # Набор полей для всех страниц

    def get_fields(self, obj):
        fields = super().get_fields(obj)
        if obj.main:
            self.fields += [...]  # Поля только для главной страницы
        return fields