子类化Models.Charfield为自己的自定义模型字段

Question

我想叫状态的自定义字段，这foreinkey是在另一个模型 阅读文档的https://docs.djangoproject.com/en/dev/howto/custom-model-fields/

1class TransactionStateModelField(models.CharField): 
    description = 'What state is this transaction' 

    def __init__(self, *args, **kwargs): 
     kwargs['status'] = 'initiated' # additional options for status could be accepted and delivered 
     super(TransactionStateModelField, self).__init__(*args, **kwargs) 

2:11:42 web.1 | File "/home/talisman/virt_env/tempilo/local/lib/python2.7/site-packages/Django-1.5.4-py2.7.egg/django/db/models/fields/__init__.py", line 626, in __init__ 
12:11:42 web.1 |  super(CharField, self).__init__(*args, **kwargs) 
12:11:42 web.1 | TypeError: __init__() got an unexpected keyword argument 'status' 

我不知道如果我后去正确的方法， 基本上我想改变一个交易的状态，从发起>接受>交付> |取消

Answer 1

似乎并不需要根本创建一个自定义字段。只要使用正规CharField与choices和default，例如：

from django.db import models 

class MyModel(models.Model): 
    STATUSES = (
     ('i', 'Initiated'), 
     ('a', 'Accepted'), 
     ('d', 'Delivered'), 
     ('c', 'Cancelled'), 
    ) 
    status = models.CharField(choices=STATUSES, default='i') 

希望有所帮助。