Question

serializer.py ：

% bigArray has dim: [npolv,nz,nsv]
% npolv=68961 > nsv=200 > nz=81
for qq=1:nsv
    for j=1:nz
        % the output of fun is a vector with dim npolv
        bigArray(:,j,qq) = fun();
    end
end

views.py ：

class ExamTermSerializer(serializers.Serializer):
    name = serializers.CharField()
    start_date = serializers.DateField()
    end_date = serializers.DateField()
    course = serializers.IntegerField()
    _class = serializers.IntegerField()

def validate(self,data):
    if data['start_date'] > data['end_date']:
        raise serializers.ValidationError("Start Date Should be smaller") 
    return data

当我在DRF中搜索对象级别验证时，我发现我已经在序列化程序（即###Bunch of code.. _exm,c = ExamTerm.objects.get_or_create(name = data['name'], defaults = { 'start_date':data['start_date'], 'end_date':data['end_date'], 'course_id':data['course'], '_class_id':data['_class'] }) if not c: raise serializers.ValidationError({ "Detail":['Exam With This name Already Exist'] }) return Response(data , status=status.HTTP_201_CREATED)）中编写了该验证功能。

我的实际问题是如何从视图中实现此validate函数，以使validate始终小于start_date。

Answer 1

您需要覆盖save()模型的ExamTerm方法

def save(self,*args,**kwargs):
    if not self.start_date > self.end_date:
        super(ExamTerm,self).save(*args,**kwargs)
    else:
        raise ValidationError('start date can not be greater than end date')

如何在Django Rest Framework中执行对象级验证？

1 个答案: