如何设置默认值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)
status = models.CharField(max_length=2, null=True, choices=STATUSES, default='E')
或者避免在 STATUSES 更改时设置无效的默认值:
status = models.CharField(max_length=2, null=True, choices=STATUSES, default=STATUSES[0][0])
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