Django 代理模型中的附加 models.CharField

Question

Can anyone help me with adding an additional models.CharField to my Django cities_light_region table.

This is what i want to implement:

class MyRegion(Region):
    state_code = models.CharField(max_length=100, default='XXX', blank=True)

    class Meta:
        proxy = True

Error: ?: (models.E017) Proxy model 'MyRegion' contains model fields.

Answer 1

好吧，错误消息说明了一切：代理模型不能包含模型字段，原因很明显， 代理模型是一个使用另一个模型的表并且只添加或覆盖行为的类。

Answer 2

We can do this with below trick

class Model(object):
    '''
    Skip extra field validation "models.E017"
    '''

    @classmethod
    def _check_model(cls):
        errors = []
        return errors

class MyRegion(Model, Region):
    state_code = models.CharField(max_length=100, default='XXX', blank=True)

    class Meta:
        proxy = True