rest-framework源码解析和自定义组件----版本

from django.http import HttpResponse
from django.shortcuts import render

# Create your views here.
from rest_framework.views import APIView
from rest_framework.request import Request


class ParamVersion(object):
    def determin_version(self,request):
        version = request.query_params.get('version')
        return version

class UsersView(APIView):
    def get(self,request,*args,**kwargs):
        # request首先是先从自己的类中拿，如果自己的类中没有，就去原生的那个类中的去拿，
        # 否则就会抛出异常
        # version = request._request.GET.get('version')
        # print(version)
        # version = request.query_param.get('version') # 和request._request.GET.get('version')取值完全一样
        # print version
        return HttpResponse('用户列表')

from rest_framework.versioning import QueryParameterVersioning
class UsersView(APIView):
    versioning_class = QueryParameterVersioning
    def get(self,request,*args,**kwargs):
        print(request.version)
        return HttpResponse('用户列表')

REST_FRAMEWORK = {
    'DEFAULT_VERSION_CLASS':'rest_framework.versioning.URLPathVersioning',
    'DEFAULT_VERSION':'v1',
    'ALLOWED_VERSIONS':['v1','v2'],
    'VERSION_PARAM':'version',
}

class UsersView(APIView):
    def get(self,request,*args,**kwargs):
        print(request.version)
        return HttpResponse('用户列表')

urlpatterns = [
 # url(r'^users/',views.UsersView.as_view()),
 url(r'^(?P<version>[v1|v2]+)/users/$',views.UsersView.as_view()),
]

class UsersView(APIView):
    def get(self,request,*args,**kwargs):
        self.dispatch()
        # 获取版本
        print(request.version)
        # 获取版本的对象
        print(request.versioning_scheme)
        # 内置的反向生成url，不需要指定版本，会自动生成，其实是当前url的版本
        u1 = request.versioning_scheme.reverse(viewname='uuu',request=request)
        print(u1)
        # 使用Django内置的反向生成url,必须要指定版本
        u2 = reverse(viewname='uuu',kwargs={'version':1})
        print(u2)
        return HttpResponse('用户列表')

urlpatterns = [
 # url(r'^users/',views.UsersView.as_view()),
 url(r'^(?P<version>[v1|v2]+)/users/$',views.UsersView.as_view(),name='uuu'),
]

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^api/$',include('myapp.urls'))
]

class UsersView(APIView):
    def get(self,request,*args,**kwargs):
        self.dispatch()
        # 1.获取版本
        print(request.version)
        # 2.获取版本的对象
        print(request.versioning_scheme)
        # 3. 内置的反向生成url，不需要指定版本，会自动生成，其实是当前url的版本
        u1 = request.versioning_scheme.reverse(viewname='uuu',request=request)
        print(u1)
        # 使用Django内置的反向生成url,必须要指定版本
        u2 = reverse(viewname='uuu',kwargs={'version':1})
        print(u2)
        return HttpResponse('用户列表')