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上下文:我有問題訪問其通過嵌套串行驗證字段。 我有一個非常簡單的示例模型,如下所示。 對於其中的2個字段,我有他們特定的序列化器。當我嘗試訪問數據時,它將返回除特定序列化器驗證的字段之外的所有字段。serializer.data丟失某些數據
模型看起來像這樣
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')
現在我做
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
任何幫助,將不勝感激!感謝
如何訪問數據?如果不是'serializer.data' –
我按照你的說法做了上述操作。刪除了'read_only = True',然後實現了序列化器的創建。但現在它給了我錯誤「to_internal_value()必須實現」 我不太明白爲什麼那個錯誤! –
這可能是RecursiveField的一個問題。 – Linovia