Question

我有两个mongoengine文档模型：

from mongoengine import *

class Doc1(Document):
  doc1_field1 = StringField(max_length=100)
  doc1_field2 = StringField(max_length=100)

class Doc2(Document):
  doc2_field1 = ReferenceField(Doc1)
  doc2_field2 = StringField(max_length=100)

serializers.py ：

中的

from rest_framework_mongoengine import serializers
from .models import Doc1, Doc2

class Doc1Serializer(serializers.DocumentSerializer):

   class Meta:          
      model = Doc1
      fields = '__all__'

class Doc2Serializer(serializers.DocumentSerializer):

   doc2_field1 = Doc1Serializer()

   class Meta:
      model = Doc2
      fields = ('doc2_field1', 'doc2_field2')

views.py

from rest_framework_mongoengine import viewsets
from .models import Doc2
from .serializers import Doc2Serializer

class Doc2ViewSet(viewsets.ModelViewSet):

   lookup_field = 'pk'

   serializer_class = Doc2Serializer

   def get_queryset(self):
     return Doc2.objects.all()

我想要实现的是当我发出 GET 请求时， doc2_field1 应根据 {{1}取消引用} 现在实际情况就是如此。问题是当我尝试使用Doc1Serializer中定义的新ObjectID引用PUT / PATCH doc2_field1 时。这就是我得到以下内容的地方：

“non_field_errors”：[ “数据无效。预计字典，但得到了str。” ]

所以我的问题是，是否有办法在 models.py 中取消引用字段，但允许 GET 中的对象引用。< / p>

预期：

获取：

PUT/PATCH

PUT / PATCH：

{
  "doc2_field1": {
  "doc1_field1": "Text Value 1",
  "doc1_field2": "Text Value 2"
  },
  "doc2_field2": "Text Value"
}

Answer 1

您可以覆盖Doc2Serializer的to_representation方法，仅显示GET请求的详细信息：

class Doc2Serializer(serializers.DocumentSerializer):

   class Meta:
      model = Doc2
      fields = ('doc2_field1', 'doc2_field2')

   def to_representation(self, instance):
      self.fields['doc2_field1'] = Doc1Serializer()
      return super(Doc2Serializer, self).to_representation(instance)

Django Rest Framework Mongoengine - PUT / PATCH vs GET for ReferenceField

1 个答案: