Django中的DecimalField验证 [英] DecimalField Validation in Django

问题描述

我正在尝试在Django中验证 DecimalField

I'm trying to validate a DecimalField in Django

在shell中尝试：

>> from django.forms import DecimalField
>> from django.core.validators import MaxValueValidator
>> f = DecimalField(max_digits=2, decimal_places=1, validators=[MaxValueValidator(10)])
>> f.validate(11) # after this I should get an error
>>

但是它不显示验证错误。

But it does not show validation errors. It should throw an error because 11 is greater that 10, right?

我在做什么错了？

推荐答案

您在字段声明中遇到1个问题。
如果max_digits = 2且十进制_places = 1，则在没有验证者干预的情况下，最大值为9.9。

You are 1 problem in field declaration. if max_digits = 2 and decimal_places = 1, your max is 9.9 without the intervention of validators.

max_digits = 3且对于max = 10.0的验证者

max_digits = 3 and validators for max = 10.0

使用 clean（）函数：

>> from django.forms import DecimalField
>> from django.core.validators import MaxValueValidator
>> f = DecimalField(max_digits=3, decimal_places=1, validators=[MaxValueValidator(10)])
>> f.clean(11.2)

https://docs.djangoproject.com/en/1.10/ref/forms/validation/

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