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[英]Include foreign key in saving Django-Rest-Framework serializer
[英]django-rest-framework: Setting up serializer for foreign key
在我的模型中,我有两个名为Vtable
和Vdata
Vtable
。 每个虚拟表(在Vtable
)具有存储在Vdata
的虚拟数据条目。
我正在尝试创建一个视图,显示与每个Vtable
对应的Vdata
列表
我的序列化器不工作,我认为这是因为我正在向后做。 我认为问题在于这一行: table_id = serializers.RelatedField(many=True)
作为参考,我得到这个错误: 'Vtable' object is not iterable
这是我的models.py:
from django.db import models
from django.contrib.auth.models import User
class Vtable(models.Model):
user = models.ForeignKey(User)
table_name = models.CharField(max_length=200)
added_date = models.DateTimeField('date added')
def __unicode__(self):
return self.table_name
class Vdata(models.Model):
table_id = models.ForeignKey(Vtable)
table_pk = models.IntegerField()
column_1 = models.CharField(max_length=200)
column_2 = models.CharField(max_length=200)
added_date = models.DateTimeField('date added')
def __unicode__(self):
return str(self.added_date)
这是我的serializers.py:
from django.contrib.auth.models import User, Group
from rest_framework import serializers
from vtables.models import Vtable, Vdata
class TableSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.Field(source='user.username')
class Meta:
model = Vtable
fields = ('table_name', 'added_date', 'user')
class EntrySerializer(serializers.HyperlinkedModelSerializer):
table_id = serializers.RelatedField(many=True)
class Meta:
model = Vdata
fields = ('table_id', 'table_pk', 'column_1', 'column_2', 'added_date')
这是调用它的视图:
class EntryList(APIView):
def get(self, request, format=None):
entries = Vdata.objects.all()
serializer = EntrySerializer(entries, many=True)
return Response(serializer.data
class Meta:
model = Vdata
fields = ('table_id', 'table_pk', 'column_1', 'column_2', 'added_date')
以下是如何执行此操作的示例:
class TableSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.Field(source='user.username')
entries = EntrySerializer(many=True)
class Meta:
model = Vtable
fields = ('table_name', 'added_date', 'user', 'entries')
class EntrySerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Vdata
fields = ('table_id', 'table_pk', 'column_1', 'column_2', 'added_date')
对于观点:
class EntryList(GenericAPIView):
queryset = Vtable.objects.all()
serializer_class = TableSerializer
别忘了:
在模型外键字段定义中设置related_name='entries'
。
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