七、版本组件

7.1基于GET请求

#url.py
urlpatterns = [    
    path('home/',views.HomeView.as_view(),name='home'), 

]

#setting.py
REST_FRAMEWORK = {
	#定义版本号的名称，默认为'version'
    'VERSION_PARAM':'version', 
    #允许的版本号值，如果前端传递过来的版本号的值不在此列表内，会抛出错误
    'ALLOWED_VERSIONS':['v1','v2'],
}

#视图类
class HomeView(APIView):
    authentication_classes = []
    versioning_class = QueryParameterVersioning
    def get(self,request):
        #根据路由名称反向生成url,会把版本信息也带上
        url=request.versioning_scheme.reverse('home',request=request)       
        #返回版本号和url        
        return Response({'版本':request.version,'url':url})

效果：

7.2基于路由url

#url.py
urlpatterns = [   
    path('home/<str:version>/',views.HomeView.as_view(),name='home'),    

]

#视图类
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.versioning import QueryParameterVersioning
from rest_framework.versioning import URLPathVersioning


# Create your views here.

class HomeView(APIView):
    authentication_classes = []
    versioning_class = URLPathVersioning
    def get(self,request,*args,**kwargs):
        #根据路由名称反向生成url,会把版本信息也带上
        url=request.versioning_scheme.reverse('home',request=request)
        #返回版本号和url  
        return Response({'版本':request.version,'url':url})

效果：

7.3基于Accept请求头

#url.py
urlpatterns = [
    # path('admin/', admin.site.urls),
    path('home/',views.HomeView.as_view(),name='home'),
    path('login/', views.LoginView.as_view()),
    path('user/', views.UserView.as_view()),
    path('order/', views.OrderView.as_view()),

]

#视图类
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.versioning import QueryParameterVersioning
from rest_framework.versioning import URLPathVersioning
from rest_framework.versioning import AcceptHeaderVersioning

# Create your views here.

class HomeView(APIView):
    authentication_classes = []
    versioning_class = AcceptHeaderVersioning
    def get(self,request,*args,**kwargs):
        #根据路由名称反向生成url,会把版本信息也带上
        url=request.versioning_scheme.reverse('home',request=request)
        #返回版本号和url 
        return Response({'版本':request.version,'url':url})

效果：

7.4全局配置

#settings.py
#drf配置
REST_FRAMEWORK = {   
    #这里配置完以后，就不需要在每个视图类中配置版本组件了
    'DEFAULT_VERSIONING_CLASS':'rest_framework.versioning.AcceptHeaderVersioning'
}