Question

我拥有的是：

models.py：

class Address(custom_mixins.SiteAwareAbstractModel):
states = State.objects.all()

CHOICES = list()

for state in states:
    CHOICES.append((state.code, state.name))

CHOICES = tuple(CHOICES)
state_name = models.CharField(max_length=80, choices=CHOICES)

然后是州立课程

class State(models.Model):
name = models.CharField(max_length=256)
code = models.CharField(max_length=2, null=True)
created_at = models.DateTimeField(auto_now_add=True)
modified_at = models.DateTimeField(auto_now=True)

class Meta:
    ordering = ['-id']

def __str__(self):
    return '{}'.format(self.name)

这将呈现所有存储在表中的状态。我想要的是按字母顺序显示所有状态。我尝试这样做：

states = State.objects.all().order_by(
    'name').values_list(
    'code', flat=True)

但这引发了错误

CHOICES.append（（state.code，state.name）） AttributeError：“ str”对象没有属性“ code”

Answer 1

尝试：

states = State.objects.all().values_list('code', 'name', named=True).order_by('name')

for state in states:
    CHOICES.append((state.code, state.name))

More information on the values_list method

django：按字母顺序对表数据进行排序

1 个答案: