django Rest Framework----序列化

一、手动序列化

class BookView(APIView):
'''
构建数据结构
[{"title": "go"}, {"title": "java"}, {"title": "python"}, {"title": "c++"}]
'''
def get(self,request):
book_list = models.Book.objects.all()
tmp=[]
for book_obj in book_list:
tmp.append({
'title':book_obj.title
})

return HttpResponse(json.dumps(tmp))

def post(self,request):
return HttpResponse('post....')

from django.forms.models import model_to_dict
class BookView(APIView):
def get(self,request):
book_list = models.Book.objects.all()
tmp=[]
for book_obj in book_list:
tmp.append(model_to_dict(book_obj))

return HttpResponse(json.dumps(tmp))

def model_to_dict(instance, fields=None, exclude=None):
pass

instance:queryset中每一个实例对象
fields:表示一个可选列表，如果提供则返回的dict中将只包含指定的字段
exclude:如果提供，则将字段排除在返回的dict中，即使fields包含它

二、使用django中的serialize

序列化后的结果：
[{"model": "bookmanage.book", "pk": 1, "fields": {"title": "go"}}, {"model": "bookmanage.book", "pk": 2, "fields": {"title": "java"}}, {"model": "bookmanage.book", "pk": 3, "fields": {"title": "python"}}, {"model": "bookmanage.book", "pk": 4, "fields": {"title": "c++"}}]

from django.shortcuts import render,HttpResponse
from rest_framework.views import APIView
from bookmanage import models
from django.core.serializers import serialize

class BookView(APIView):

def get(self,request):
result = serialize('json',models.Book.objects.all())
return HttpResponse(result)

serialize

QuerySet

三、使用REST框架序列化

创建Serializer类