我有一个模型类，我希望有两个字段作为选项字段，所以为了填充这些选项，我使用一个枚举，如下所示
#models.py
class Transaction(models.Model):
trasaction_status = models.CharField(max_length=255, choices=TransactionStatus.choices())
transaction_type = models.CharField(max_length=255, choices=TransactionType.choices())
#enums.py
class TransactionType(Enum):
IN = "IN",
OUT = "OUT"
@classmethod
def choices(cls):
print(tuple((i.name, i.value) for i in cls))
return tuple((i.name, i.value) for i in cls)
class TransactionStatus(Enum):
INITIATED = "INITIATED",
PENDING = "PENDING",
COMPLETED = "COMPLETED",
FAILED = "FAILED"
ERROR = "ERROR"
@classmethod
def choices(cls):
print(tuple((i.name, i.value) for i in cls))
return tuple((i.name, i.value) for i in cls)
然而，当我试图通过admin访问此模型时，我得到以下错误:
Django Version: 1.11
Exception Type: ValueError
Exception Value:
too many values to unpack (expected 2)
我阅读了两篇描述如何使用枚举的文章: