[英]How to give validations for a PrimaryKeyRelatedField serializer
如何将 required=true 之类的验证添加到 primarykeyrelated 序列化程序?
模型.py
class WorkLocation(models.Model):
city = models.CharField(max_length=255)
latitude = models.FloatField()
longtitude = models.FloatField()
序列化程序.py
class WorkLocationField(serializers.PrimaryKeyRelatedField):
queryset = WorkLocation.objects.all()
def to_internal_value(self, data):
if type(data) == dict:
location, created = WorkLocation.objects.get_or_create(**data)
data = location.pk
return super().to_internal_value(data)
class JobPostSerializer(serializers.ModelSerializer):
work_location = WorkLocationField()
class Meta:
model = JobPost
fields = "__all__"
我的部分数据如下所示:
"hourly_pay": 10,
"yearly_pay": 120,
"work_location": {
"city": "kottayam",
"latitude": 0.00001,
"longtitude": 0.0012
},
"Benefit": [
1
],
我需要对嵌套的 JSON 数据进行验证。
从你的情况来看JobPostSerializer
,好像你JobPost
模式有一个OneToOne
有关系WorkLocation
。这意味着你的models.py
如下所示:
class WorkLocation(models.Model):
city = models.CharField(max_length=255)
latitude = models.FloatField()
longtitude = models.FloatField()
class JobPost(models.Model):
work_location = models.OneToOneField(WorkLocation, on_delete=models.CASCADE)
为了提供work_location现场验证的JobPostSerializer
,您可以创建WorkLocationSerializer
如下:
class WorklocationSerializer(serializers.ModelSerializer):
class Meta:
model = WorkLocation
fields = "__all__"
# field level validation
def validate_city(self, value):
# value validation
return value
def validate(self, data):
# data validation
return data
class JobPostSerializer(serializers.ModelSerializer):
class Meta:
model = JobPost
fields = "__all__"
work_location = WorkLocationSerializer()
通过这种方式,您可以在WorkLocationSerializer
执行所有验证,并且当作为字段添加到另一个序列化器上时,嵌套验证会起作用。
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