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上下文:我有问题访问其通过嵌套串行验证字段。 我有一个非常简单的示例模型,如下所示。 对于其中的2个字段,我有他们特定的序列化器。当我尝试访问数据时,它将返回除特定序列化器验证的字段之外的所有字段。serializer.data丢失某些数据
模型看起来像这样
class Sampler(models.Model):
sample_name = models.CharField(unique=True, max_length=100)
sampling_by = JSONField(max_length=100)
extractions = JSONField(max_length=100)
max_samples = models.IntegerField(default=100)
串行器
class ExtractionsSerializer(serializers.BaseSerializer):
table_name = serializers.CharField()
extraction_type = serializers.ChoiceField(["ABC"])
dependencies = serializers.ListField(child=RecursiveField(), allow_empty=True, required=False)
class SamplingBySerializer(serializers.BaseSerializer):
"""
Validate sampling_by
"""
def to_internal_value(self, samples):
methods = ["ABC"]
sampling_not_supported = [sample for sample in samples
if sample['by'] not in methods]
if sampling_not_supported:
raise ValidationError("{} not in {}".format(sampling_not_supported, methods))
class SamplerSerializer(serializers.ModelSerializer):
extractions = ExtractionsSerializer(read_only=True)
sampling_by = SamplingBySerializer(read_only=True)
class Meta:
model = Sampler
fields = ('sample_name', 'database', 'schema', 'sampling_by', 'extractions', 'max_samples')
现在我做
data = {
"database": "postgresql://..",
"sampling_by":[{
"by":"ABC",
"value": ["l32=turn_the"]
}],
"max_samples":3,
"extractions" : [{
"table_name": "person",
"extraction_type": "ABC"
}]
}
sampler = SamplerSerializer(data=data)
sampler.is_valid() #returns True
sampler.data => does not contain data of the nested fields. Like the `sampling_by` and `extractions`. Contains all other fields
sampler.validated_data => same problem as above
任何帮助,将不胜感激!感谢
如何访问数据?如果不是'serializer.data' –
我按照你的说法做了上述操作。删除了'read_only = True',然后实现了序列化器的创建。但现在它给了我错误“to_internal_value()必须实现” 我不太明白为什么那个错误! –
这可能是RecursiveField的一个问题。 – Linovia