Django如何写正片Cimalfield
我想写一封肯定的信 这是我的密码:Django如何写正片Cimalfield,django,django-models,django-validation,Django,Django Models,Django Validation,我想写一封肯定的信 这是我的密码: from django.core.exceptions import ValidationError from django.utils.translation import ugettext_lazy as _ from django.db.models import DecimalField from decimal import * def validate_positive_decimal(value): try: deci
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _
from django.db.models import DecimalField
from decimal import *
def validate_positive_decimal(value):
try:
decimal_value = Decimal(value)
if decimal_value < 0:
raise ValidationError(_('{val} should be a positive decimal number'.format(val = decimal_value)), code='negative decimal')
except (ValueError, TypeError):
raise ValidationError(_('Enter a valid decimal or integer value'), code='invalid decimal')
class PositiveDecimalField(DecimalField):
default_validators = [validate_positive_decimal]
def __init__(self, *args, **kwargs):
super(DecimalField, self).__init__(*args, **kwargs)
def validators(self):
return super(PositiveDecimalField, self).validators + [validate_positive_decimal]
我得到的错误是:
super(DecimalField, self).__init__(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'max_digits'
我在文档中查看了Django的DecimalField的源代码。我还试图将验证器validate_positive_decimal传递给DecimalField,但它没有针对它进行验证
我需要在这里做什么?我通常定义以下字段:
pos_float_field = models.FloatField(validators=[MinValueValidator(0.0)])
这样比较干净
Doc:您在\uuuu init\uuu
中对super()
的调用应该是
super(PositiveDecimalField, self).__init__(*args, **kwargs)
而不是
super(DecimalField, self).__init__(*args, **kwargs)
super(DecimalField, self).__init__(*args, **kwargs)