Django的選擇。如何設置默認選項？

Question

如何設置默認STATUSES選項？

class Order(models.Model): 
    STATUSES = (
     (u'E', u'Expected'), 
     (u'S', u'Sent'), 
     (u'F', u'Finished'), 
    ) 

    status = models.CharField(max_length=2, null=True, choices=STATUSES) 

Answer 1

status = models.CharField(max_length=2, null=True, choices=STATUSES, default='E') 

或避免，如果狀態變化設置一個無效的默認：

status = models.CharField(max_length=2, null=True, choices=STATUSES, default=STATUSES[0][0])