MinValueValidator在Django中的DecimalField上不起作用 [英] MinValueValidator not working on DecimalField in Django

问题描述

我有一个使用Django和Django Rest Framework开发的API。我有一个带有DecimalField的模型，该模型应存储至少一个值。因此，我以以下方式定义了该字段：

I have an API developed with Django and Django Rest Framework. I've got a model with a DecimalField which should store values of at least one. Therefore, I've defined the field in the following way:

goal = models.DecimalField(decimal_places=2, max_digits=16, validators=[MinValueValidator(1)])

当我创建调用API的对象时（使用DRF的ModelViewSet ），我可以创建带有负目标的对象，因此验证器似乎不起作用（我将其包含在模型序列化器中）。

When I create objects calling the API (using DRF's ModelViewSet), I can create objects with negative "goal", so the validator doesn't seem to work (I've got it included in the model serializer).

任何

推荐答案

from django.db import models
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _


class MyModel(models.Model):
    goal = models.DecimalField(decimal_places=2, max_digits=16, 
              validators=[MinValueValidator(1)])

    def clean(self):
        if self.goal < 1:
            raise ValidationError(_('Only numbers equal to 1 or greater are accepted.'))

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