Django的选择。如何设置默认选项？

Question

如何设置默认STATUSES选项？

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，如果状态变化设置一个无效的默认：

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