我对 DRF 有点陌生。我有看起来像这样的记录模型:
class Records(models.Model):
owner = models.ForeignKey(User, null=True)
activity = models.ForeignKey(Activity, null=True)
time_start = models.DateTimeField(null=True)
time_end = models.DateTimeField(null=True)
...
RecordSerializer 是这样的:
class RecordSerializer(serializers.ModelSerializer):
now = datetime.today()
owner = serializers.Field(source='owner.username')
time_start = serializers.DateTimeField(source='now')
class Meta:
model = Records
fields = ("owner", "activity", "time_start")
这是观点:
class StartApiView(generics.CreateAPIView):
model = Records
serializer_class = RecordSerializer
def pre_save(self, obj):
obj.owner = self.request.user
POST 请求是从 Backbone 发送的,它包含一个带有事件 ID 的字段,例如“{activity:12}”。如果想让view保存Record,将activity设置为id为12的Activity怎么办?
最佳答案
Django REST 框架 provides a PrimaryKeyRelatedField
对于这个用例。
class RecordSerializer(serializers.ModelSerializer):
activity = serializers.PrimaryKeyRelatedField()
owner = serializers.CharField(read_only=True, source='owner.username')
time_start = serializers.DateTimeField(source='now')
class Meta:
model = Records
fields = ("owner", "activity", "time_start")
这将产生与您正在寻找的类似的输出,并且它将接受
id
想要更新它时的事件。
关于Django Rest Framework如何根据ID保存带有相关字段的模型,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27028832/