	</h1>
	<div class="clear"></div>
	<div class="postBody">

知识预览

快速实例
序列化
视图三部曲
认证与权限组件
解析器
分页

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快速实例

Quickstart

回到顶部

序列化

创建一个序列化类

简单使用

开发我们的Web API的第一件事是为我们的Web API提供一种将代码片段实例序列化和反序列化为诸如json之类的表示形式的方式。我们可以通过声明与Django forms非常相似的序列化器（serializers）来实现。

models部分:

from django.db import models
# Create your models here.
class Book(models.Model):

title=models.CharField(max_length=32)

price=models.IntegerField()

pub_date=models.DateField()

publish=models.ForeignKey("Publish")

authors=models.ManyToManyField("Author")

def str(self):

return self.title
class Publish(models.Model):

name=models.CharField(max_length=32)

email=models.EmailField()

def str(self):

return self.name
class Author(models.Model):

name=models.CharField(max_length=32)

age=models.IntegerField()

def str(self):

return self.name

views部分：

from rest_framework.views import APIView
from rest_framework.response import Response
from .models import *
from django.shortcuts import HttpResponse
from django.core import serializers
from rest_framework import serializers
class BookSerializers(serializers.Serializer):

title=serializers.CharField(max_length=32)

price=serializers.IntegerField()

pub_date=serializers.DateField()

publish=serializers.CharField(source="publish.name")

#authors=serializers.CharField(source="authors.all")

authors=serializers.SerializerMethodField()

def get_authors(self,obj):

temp=[]

for author in obj.authors.all():

temp.append(author.name)

return temp
class BookViewSet(APIView):
</span><span style="color: #0000ff;">def</span> get(self,request,*args,**<span style="color: #000000;">kwargs):
    book_list</span>=<span style="color: #000000;">Book.objects.all()
    </span><span style="color: #008000;">#</span><span style="color: #008000;"> 序列化方式1:</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> from django.forms.models import model_to_dict</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> import json</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> data=[]</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> for obj in book_list:</span>
    <span style="color: #008000;">#</span><span style="color: #008000;">     data.append(model_to_dict(obj))</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> print(data)</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> return HttpResponse("ok")</span>

    <span style="color: #008000;">#</span><span style="color: #008000;"> 序列化方式2:</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> data=serializers.serialize("json",book_list)</span>
    <span style="color: #008000;">#</span><span style="color: #008000;"> return HttpResponse(data)</span>

    <span style="color: #008000;">#</span><span style="color: #008000;"> 序列化方式3:</span>
    bs=BookSerializers(book_list,many=<span style="color: #000000;">True)
    </span><span style="color: #0000ff;">return</span> Response(bs.data)</pre>

ModelSerializer

class BookSerializers(serializers.ModelSerializer):
      class Meta:
          model=Book
          fields="__all__"
          depth=1

提交post请求

  def post(self,request,*args,**kwargs):
    bs</span>=BookSerializers(data=request.data,many=<span style="color: #000000;">False)
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        </span><span style="color: #008000;">#</span><span style="color: #008000;"> print(bs.validated_data)</span>

            bs.save()

return Response(bs.data)

else:

return HttpResponse(bs.errors)

重写save中的create方法

class BookSerializers(serializers.ModelSerializer):
  </span><span style="color: #0000ff;">class</span><span style="color: #000000;"> Meta:
      model</span>=<span style="color: #000000;">Book
      fields</span>=<span style="color: #800000;">"</span><span style="color: #800000;">__all__</span><span style="color: #800000;">"</span>
      <span style="color: #008000;">#</span><span style="color: #008000;"> exclude = ['authors',]</span>
      <span style="color: #008000;">#</span><span style="color: #008000;"> depth=1</span>

  <span style="color: #0000ff;">def</span><span style="color: #000000;"> create(self, validated_data):
    
      authors </span>= validated_data.pop(<span style="color: #800000;">'</span><span style="color: #800000;">authors</span><span style="color: #800000;">'</span><span style="color: #000000;">)
      obj </span>= Book.objects.create(**<span style="color: #000000;">validated_data)
      obj.authors.add(</span>*<span style="color: #000000;">authors)
      </span><span style="color: #0000ff;">return</span> obj</pre>

单条数据的get和put请求

class BookDetailViewSet(APIView):
</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> get(self,request,pk):
    book_obj</span>=Book.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=<span style="color: #000000;">BookSerializers(book_obj)
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)

</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> put(self,request,pk):
    book_obj</span>=Book.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=BookSerializers(book_obj,data=<span style="color: #000000;">request.data)
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        bs.save()
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)
    </span><span style="color: #0000ff;">else</span><span style="color: #000000;">:
        </span><span style="color: #0000ff;">return</span> HttpResponse(bs.errors)</pre>

超链接API：Hyperlinked

class BookSerializers(serializers.ModelSerializer):
      publish= serializers.HyperlinkedIdentityField(
                     view_name='publish_detail',
                     lookup_field="publish_id",
                     lookup_url_kwarg="pk")
      class Meta:
          model=Book
          fields="__all__"
          #depth=1

urls部分：

urlpatterns = [
    url(r'^books/$', views.BookViewSet.as_view(),name="book_list"),
    url(r'^books/(?P<pk>d+)$', views.BookDetailViewSet.as_view(),name="book_detail"),
    url(r'^publishers/$', views.PublishViewSet.as_view(),name="publish_list"),
    url(r'^publishers/(?P<pk>d+)$', views.PublishDetailViewSet.as_view(),name="publish_detail"),
]

回到顶部

视图三部曲

使用混合（mixins）

上一节的视图部分：

from rest_framework.views import APIView
from rest_framework.response import Response
from .models import *
from django.shortcuts import HttpResponse
from django.core import serializers
from rest_framework import serializers
class BookSerializers(serializers.ModelSerializer):

class Meta:

model=Book

fields="all"

#depth=1
class PublshSerializers(serializers.ModelSerializer):
  </span><span style="color: #0000ff;">class</span><span style="color: #000000;"> Meta:
      model</span>=<span style="color: #000000;">Publish
      fields</span>=<span style="color: #800000;">"</span><span style="color: #800000;">__all__</span><span style="color: #800000;">"</span><span style="color: #000000;">
      depth</span>=1

class BookViewSet(APIView):
</span><span style="color: #0000ff;">def</span> get(self,request,*args,**<span style="color: #000000;">kwargs):
    book_list</span>=<span style="color: #000000;">Book.objects.all()
    bs</span>=BookSerializers(book_list,many=True,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)


</span><span style="color: #0000ff;">def</span> post(self,request,*args,**<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">print</span><span style="color: #000000;">(request.data)
    bs</span>=BookSerializers(data=request.data,many=<span style="color: #000000;">False)
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        </span><span style="color: #0000ff;">print</span><span style="color: #000000;">(bs.validated_data)
        bs.save()
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)
    </span><span style="color: #0000ff;">else</span><span style="color: #000000;">:
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> HttpResponse(bs.errors)

class BookDetailViewSet(APIView):
</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> get(self,request,pk):
    book_obj</span>=Book.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=BookSerializers(book_obj,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)

</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> put(self,request,pk):
    book_obj</span>=Book.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=BookSerializers(book_obj,data=request.data,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        bs.save()
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)
    </span><span style="color: #0000ff;">else</span><span style="color: #000000;">:
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> HttpResponse(bs.errors)

class PublishViewSet(APIView):
</span><span style="color: #0000ff;">def</span> get(self,request,*args,**<span style="color: #000000;">kwargs):
    publish_list</span>=<span style="color: #000000;">Publish.objects.all()
    bs</span>=PublshSerializers(publish_list,many=True,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)


</span><span style="color: #0000ff;">def</span> post(self,request,*args,**<span style="color: #000000;">kwargs):

    bs</span>=PublshSerializers(data=request.data,many=<span style="color: #000000;">False)
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        </span><span style="color: #008000;">#</span><span style="color: #008000;"> print(bs.validated_data)</span>

            bs.save()

return Response(bs.data)

else:

return HttpResponse(bs.errors)
class PublishDetailViewSet(APIView):
</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> get(self,request,pk):

    publish_obj</span>=Publish.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=PublshSerializers(publish_obj,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)

</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> put(self,request,pk):
    publish_obj</span>=Publish.objects.filter(pk=<span style="color: #000000;">pk).first()
    bs</span>=PublshSerializers(publish_obj,data=request.data,context={<span style="color: #800000;">'</span><span style="color: #800000;">request</span><span style="color: #800000;">'</span><span style="color: #000000;">: request})
    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> bs.is_valid():
        bs.save()
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> Response(bs.data)
    </span><span style="color: #0000ff;">else</span><span style="color: #000000;">:
        </span><span style="color: #0000ff;">return</span> HttpResponse(bs.errors)</pre>

mixin类编写视图

from rest_framework import mixins
from rest_framework import generics
class BookViewSet(mixins.ListModelMixin,

mixins.CreateModelMixin,

generics.GenericAPIView):
queryset </span>=<span style="color: #000000;"> Book.objects.all()
serializer_class </span>=<span style="color: #000000;"> BookSerializers

</span><span style="color: #0000ff;">def</span> get(self, request, *args, **<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">return</span> self.list(request, *args, **<span style="color: #000000;">kwargs)

</span><span style="color: #0000ff;">def</span> post(self, request, *args, **<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">return</span> self.create(request, *args, **<span style="color: #000000;">kwargs)

class BookDetailViewSet(mixins.RetrieveModelMixin,

mixins.UpdateModelMixin,

mixins.DestroyModelMixin,

generics.GenericAPIView):

queryset = Book.objects.all()

serializer_class = BookSerializers
</span><span style="color: #0000ff;">def</span> get(self, request, *args, **<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">return</span> self.retrieve(request, *args, **<span style="color: #000000;">kwargs)

</span><span style="color: #0000ff;">def</span> put(self, request, *args, **<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">return</span> self.update(request, *args, **<span style="color: #000000;">kwargs)

</span><span style="color: #0000ff;">def</span> delete(self, request, *args, **<span style="color: #000000;">kwargs):
    </span><span style="color: #0000ff;">return</span> self.destroy(request, *args, **kwargs)</pre>

使用通用的基于类的视图

通过使用mixin类，我们使用更少的代码重写了这些视图，但我们还可以再进一步。REST框架提供了一组已经混合好（mixed-in）的通用视图，我们可以使用它来简化我们的views.py模块。

from rest_framework import mixins
from rest_framework import generics
class BookViewSet(generics.ListCreateAPIView):
queryset </span>=<span style="color: #000000;"> Book.objects.all()
serializer_class </span>=<span style="color: #000000;"> BookSerializers

class BookDetailViewSet(generics.RetrieveUpdateDestroyAPIView):

queryset = Book.objects.all()

serializer_class = BookSerializers
class PublishViewSet(generics.ListCreateAPIView):
queryset </span>=<span style="color: #000000;"> Publish.objects.all()
serializer_class </span>=<span style="color: #000000;"> PublshSerializers

class PublishDetailViewSet(generics.RetrieveUpdateDestroyAPIView):

queryset = Publish.objects.all()

serializer_class = PublshSerializers

viewsets.ModelViewSet

urls.py:

    url(r'^books/$', views.BookViewSet.as_view({"get":"list","post":"create"}),name="book_list"),
    url(r'^books/(?P<pk>d+)$', views.BookViewSet.as_view({
                'get': 'retrieve',
                'put': 'update',
                'patch': 'partial_update',
                'delete': 'destroy'
            }),name="book_detail"),

views.py:

class BookViewSet(viewsets.ModelViewSet):
    queryset = Book.objects.all()
    serializer_class = BookSerializers

回到顶部

认证与权限组件

认证组件

局部视图认证

在app01.service.auth.py:

class Authentication(BaseAuthentication):
</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> authenticate(self,request):
    token</span>=request._request.GET.get(<span style="color: #800000;">"</span><span style="color: #800000;">token</span><span style="color: #800000;">"</span><span style="color: #000000;">)
    token_obj</span>=UserToken.objects.filter(token=<span style="color: #000000;">token).first()
    </span><span style="color: #0000ff;">if</span> <span style="color: #0000ff;">not</span><span style="color: #000000;"> token_obj:
        </span><span style="color: #0000ff;">raise</span> exceptions.AuthenticationFailed(<span style="color: #800000;">"</span><span style="color: #800000;">验证失败!</span><span style="color: #800000;">"</span><span style="color: #000000;">)
    </span><span style="color: #0000ff;">return</span> (token_obj.user,token_obj)</pre>

在views.py：

def get_random_str(user):
    import hashlib,time
    ctime=str(time.time())
md5</span>=hashlib.md5(bytes(user,encoding=<span style="color: #800000;">"</span><span style="color: #800000;">utf8</span><span style="color: #800000;">"</span><span style="color: #000000;">))
md5.update(bytes(ctime,encoding</span>=<span style="color: #800000;">"</span><span style="color: #800000;">utf8</span><span style="color: #800000;">"</span><span style="color: #000000;">))

</span><span style="color: #0000ff;">return</span><span style="color: #000000;"> md5.hexdigest()

from app01.service.auth import *
from django.http import JsonResponse

class LoginViewSet(APIView):

 authentication_classes = [Authentication,]

    def post(self,request,*args,**kwargs):

res={"code":1000,"msg":None}

try:

user=request._request.POST.get("user")

pwd=request._request.POST.get("pwd")

user_obj=UserInfo.objects.filter(user=user,pwd=pwd).first()

print(user,pwd,user_obj)

if not user_obj:

res["code"]=1001

res["msg"]="用户名或者密码错误"

else:

token=get_random_str(user)

UserToken.objects.update_or_create(user=user_obj,defaults={"token":token})

res["token"]=token
    </span><span style="color: #0000ff;">except</span><span style="color: #000000;"> Exception as e:
        res[</span><span style="color: #800000;">"</span><span style="color: #800000;">code</span><span style="color: #800000;">"</span>]=1002<span style="color: #000000;">
        res[</span><span style="color: #800000;">"</span><span style="color: #800000;">msg</span><span style="color: #800000;">"</span>]=<span style="color: #000000;">e

    </span><span style="color: #0000ff;">return</span> JsonResponse(res,json_dumps_params={<span style="color: #800000;">"</span><span style="color: #800000;">ensure_ascii</span><span style="color: #800000;">"</span>:False})</pre>

全局视图认证组件

settings.py配置如下：

REST_FRAMEWORK={
    "DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",]
}

权限组件

局部视图权限

在app01.service.permissions.py中：

from rest_framework.permissions import BasePermission
class SVIPPermission(BasePermission):
    message="SVIP才能访问!"
    def has_permission(self, request, view):
        if request.user.user_type==3:
            return True
        return False

在views.py：

from app01.service.permissions import *
class BookViewSet(generics.ListCreateAPIView):

permission_classes = [SVIPPermission,]

queryset = Book.objects.all()

serializer_class = BookSerializers

全局视图权限

settings.py配置如下：

REST_FRAMEWORK={
    "DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",],
    "DEFAULT_PERMISSION_CLASSES":["app01.service.permissions.SVIPPermission",]
}

throttle(访问频率)组件

局部视图throttle

在app01.service.throttles.py中：

from rest_framework.throttling import BaseThrottle
VISIT_RECORD={}

class VisitThrottle(BaseThrottle):
</span><span style="color: #0000ff;">def</span> <span style="color: #800080;">__init__</span><span style="color: #000000;">(self):
    self.history</span>=<span style="color: #000000;">None

</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> allow_request(self,request,view):
    remote_addr </span>= request.META.get(<span style="color: #800000;">'</span><span style="color: #800000;">REMOTE_ADDR</span><span style="color: #800000;">'</span><span style="color: #000000;">)
    </span><span style="color: #0000ff;">print</span><span style="color: #000000;">(remote_addr)
    </span><span style="color: #0000ff;">import</span><span style="color: #000000;"> time
    ctime</span>=<span style="color: #000000;">time.time()

    </span><span style="color: #0000ff;">if</span> remote_addr <span style="color: #0000ff;">not</span> <span style="color: #0000ff;">in</span><span style="color: #000000;"> VISIT_RECORD:
        VISIT_RECORD[remote_addr]</span>=<span style="color: #000000;">[ctime,]
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> True

    history</span>=<span style="color: #000000;">VISIT_RECORD.get(remote_addr)
    self.history</span>=<span style="color: #000000;">history

    </span><span style="color: #0000ff;">while</span> history <span style="color: #0000ff;">and</span> history[-1]&lt;ctime-60<span style="color: #000000;">:
        history.pop()

    </span><span style="color: #0000ff;">if</span> len(history)&lt;3<span style="color: #000000;">:
        history.insert(0,ctime)
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> True
    </span><span style="color: #0000ff;">else</span><span style="color: #000000;">:
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> False

</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> wait(self):
    </span><span style="color: #0000ff;">import</span><span style="color: #000000;"> time
    ctime</span>=<span style="color: #000000;">time.time()
    </span><span style="color: #0000ff;">return</span> 60-(ctime-self.history[-1])</pre>

在views.py中：

from app01.service.throttles import *
class BookViewSet(generics.ListCreateAPIView):

throttle_classes = [VisitThrottle,]

queryset = Book.objects.all()

serializer_class = BookSerializers

全局视图throttle

REST_FRAMEWORK={
    "DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",],
    "DEFAULT_PERMISSION_CLASSES":["app01.service.permissions.SVIPPermission",],
    "DEFAULT_THROTTLE_CLASSES":["app01.service.throttles.VisitThrottle",]
}

内置throttle类

在app01.service.throttles.py修改为：

class VisitThrottle(SimpleRateThrottle):
scope</span>=<span style="color: #800000;">"</span><span style="color: #800000;">visit_rate</span><span style="color: #800000;">"</span>
<span style="color: #0000ff;">def</span><span style="color: #000000;"> get_cache_key(self, request, view):

    </span><span style="color: #0000ff;">return</span> self.get_ident(request)</pre>

settings.py设置：

REST_FRAMEWORK={
    "DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",],
    "DEFAULT_PERMISSION_CLASSES":["app01.service.permissions.SVIPPermission",],
    "DEFAULT_THROTTLE_CLASSES":["app01.service.throttles.VisitThrottle",],
    "DEFAULT_THROTTLE_RATES":{
        "visit_rate":"5/m",
    }
}

回到顶部

解析器

request类

django的request类和rest-framework的request类的源码解析

局部视图

from rest_framework.parsers import JSONParser,FormParser
class PublishViewSet(generics.ListCreateAPIView):
    parser_classes = [FormParser,JSONParser]
    queryset = Publish.objects.all()
    serializer_class = PublshSerializers
    def post(self, request, *args, **kwargs):
        print("request.data",request.data)
        return self.create(request, *args, **kwargs)

全局视图

REST_FRAMEWORK={
    "DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",],
    "DEFAULT_PERMISSION_CLASSES":["app01.service.permissions.SVIPPermission",],
    "DEFAULT_THROTTLE_CLASSES":["app01.service.throttles.VisitThrottle",],
    "DEFAULT_THROTTLE_RATES":{
        "visit_rate":"5/m",
    },
    "DEFAULT_PARSER_CLASSES":['rest_framework.parsers.FormParser',]
}

回到顶部

分页

简单分页

from rest_framework.pagination import PageNumberPagination,LimitOffsetPagination
class PNPagination(PageNumberPagination):

page_size = 1

page_query_param = 'page'

page_size_query_param = "size"

max_page_size = 5
class BookViewSet(viewsets.ModelViewSet):
queryset </span>=<span style="color: #000000;"> Book.objects.all()
serializer_class </span>=<span style="color: #000000;"> BookSerializers
</span><span style="color: #0000ff;">def</span> list(self,request,*args,**<span style="color: #000000;">kwargs):

    book_list</span>=<span style="color: #000000;">Book.objects.all()
    pp</span>=<span style="color: #000000;">LimitOffsetPagination()
    pager_books</span>=pp.paginate_queryset(queryset=book_list,request=request,view=<span style="color: #000000;">self)
    </span><span style="color: #0000ff;">print</span><span style="color: #000000;">(pager_books)
    bs</span>=BookSerializers(pager_books,many=<span style="color: #000000;">True)

    </span><span style="color: #008000;">#</span><span style="color: #008000;">return Response(bs.data)</span>
    <span style="color: #0000ff;">return</span> pp.get_paginated_response(bs.data)</pre>

偏移分页

from rest_framework.pagination import LimitOffsetPagination

RestFramework

快速实例

序列化

创建一个序列化类

简单使用

ModelSerializer

提交post请求

重写save中的create方法

单条数据的get和put请求

超链接API：Hyperlinked

视图三部曲

使用混合（mixins）

mixin类编写视图

使用通用的基于类的视图

viewsets.ModelViewSet

认证与权限组件

认证组件

局部视图认证

全局视图认证组件

权限组件

局部视图权限

全局视图权限

throttle(访问频率)组件

局部视图throttle

全局视图throttle

内置throttle类

解析器

request类

局部视图

全局视图

分页

简单分页

偏移分页