Django rest serializer.data 是一个空的 OrderedDict()

Django rest serializer.data is an empty OrderedDict()

这是我的模型:

from django.db import models
from django.contrib.auth.models import User
from datetime import datetime


class Staff(models.Model):
    employer = models.ForeignKey("shops.Shop")
    user = models.ForeignKey(User)

    def __unicode__(self):
        return self.user.username

这是我的序列化程序:

from rest_framework import serializers
from staff.models import Staff 


class StaffSerializer(serializers.Serializer):
    class Meta:
        model = Staff
        fields = ("id", "employer", "user")

这是我的观点:

from staff.models import Staff
from staff.serializers import StaffSerializer
from rest_framework import  generics
from rest_framework.response import Response



class StaffList(generics.ListCreateAPIView):
    queryset = Staff.objects.all()
    serializer_class = StaffSerializer

    def list(self, request):
        queryset = self.get_queryset()
        serializer = StaffSerializer(queryset, many=True)
        print queryset
        print serializer
        print serializer.data
        return Response(serializer.data)

在网络上查看此页面时可浏览 API 这是我看到的:

HTTP 200 OK
Content-Type: application/json
Vary: Accept
Allow: GET, POST, HEAD, OPTIONS

[
    {}
]

打印serializer.data和queryset的结果是这样的:

{<Staff: Alex>}
StaffSerializer([<Staff: Alex>], many=True):
[OrderedDict()]

我的序列化器有问题还是这又是另外一个问题?

如果您使用模型和查询集,则需要使用 serializers.ModelSerializer 而不是 serializers.Serializer

如果您正在使用 serializers.Serializer,您需要在其中手动定义字段。像这样:

class StaffSerializer(serializers.Serializer):
  id = serializers.IntegerField()
  content = serializers.CharField(max_length=200)

等 您不能像 ModelSerializer 那样在元数据中引用它们。可以找到有关 ModelSerializer 的文档 here