[英]How to conditionally validate in Django REST framework?
如何通過驗證方法檢查數據輸入的正確性?
假設我想向主人注冊一個人。 如果他這次已經有人了,你就不能注冊。 如何通過def validate_work_on (self, value):
完成?
序列化器:
class SerializerCreateServiceCreate(serializers.ModelSerializer):
work_on = serializers.models.CharField(choices=Service.worked_hours)
time_to_work = {}
class Meta:
model = Service
fields = '__all__'
read_only_fields = ('client_to_job',)
def create(self, validated_data):
return Service.objects.create(
name_master=validated_data.get('name_master'),
client_to_job=self.context['request'].user,
work_on=validated_data.get('work_on')
)
**def validate_work_on(self, value):
if value in Service.worked_hours:
raise serializers.ValidationError("выберите другое время")
return value**
class SerializerServiceCreate(SerializerCreateServiceCreate):
name_master = SerializerMasters()
client_to_job = UserSerializerView()
model Service
:
class Service(models.Model):
worked_hours = (
('1', '10:00'),
('2', '11:00'),
('3', '12:00'),
('4', '13:00'),
('5', '14:00'),
('6', '15:00'),
('7', '16:00'),
('8', '17:00'),
('9', '18:00'),
('10', '19:00'),
('11', '20:00'),
)
name_master = models.ForeignKey(Masters, verbose_name='Мастер', on_delete=models.CASCADE)
client_to_job = models.ForeignKey(User, verbose_name='Клиент', on_delete=models.CASCADE)
work_on = models.CharField(verbose_name='Рабочие часы', choices=worked_hours, max_length=30)
class Meta:
verbose_name = 'Сервис'
verbose_name_plural = 'Сервисы'
和 class API 查看:
class ServiceCreateView(CreateAPIView):
permission_classes = [IsAuthenticated]
serializer_class = SerializerCreateServiceCreate
def get_object(self):
return self.request.user
如何驗證這一條件?
您需要覆蓋序列化程序的 save_object(obj) 方法。
class SerializerCreateServiceCreate(serializers.ModelSerializer):
work_on = serializers.models.CharField(choices=Service.worked_hours)
time_to_work = {}
def save_object(self, obj):
###do whatever you want###
obj.save()
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