python - 如何覆盖父类中的字段

Question

我在 Django 模型中有父类和子类。我想在初始化子类时在父类中填充一个字段。或者在子类中覆盖此字段。

    class Parent(models.Model):
        type = models.CharField()

    class Child(Parent):
        type = models.CharField()  //Doesn't work

也尝试覆盖 init 方法，但它也不起作用。我怎样才能做到这一点？

Answer 1

In normal Python class inheritance, it is permissible for a child class to override any attribute from the parent class. In Django, this is not permitted for attributes that are Field instances (at least, not at the moment). If a base class has a field called author, you cannot create another model field called author in any class that inherits from that base class.

你不能。 Reference