django rest framework apiview

CBV source flow 1, create URL2. Create a View class3, As_view method source codeBecause our custom attempt class inherits the view class, the As_view function in the URL executes when the project is started, and without this method in our custom function class, we find it in the parent class.4. View function5, Dispatch6. Supplement (Http_method_names)Execution in the view function in the URL# ## url (r ' ^login/', View.view), Apiview Execution Source

Source code Anatomy of the Django REST Framework authentication method By the Django CBV mode flow, you can know the url匹配完成后，会执行自定义的类中的as_view方法 . If there is no definition in the custom class as_view方法 , depending on the inheritance of classes in the object-oriented class, you can会执行其父类View中的as_view方法 在

fromApi.serializers.indexImportIndexserializerclassP2 (pagenumberpagination):#number of data bars displayed per pageMax_page_size = 5page_size= 2Page_size_query_param='size' #Page NumberPage_query_param ='page' classIndexview (viewsets. Modelviewset):#you can also not inherit Modelviewset, inherit a few of the above classes, there are only a few methodsQueryset =models. UserInfo.objects.all () Serializer_class=Indexserializer Pagination_class=P2

1. Previously Django-made paging components, when the amount of data is particularly large, performance is not very high, there are three ways to handle:A. Record the last data ID of the current access page, and fetch the number of entriesB. Display up to 120 pagesC. Encrypt page numbers (show previous page, next page only)2.rest Framework PagingFrom rest_framewo

Pagination_class=P2 Third class: Automatically help us to generate four kinds of url,index/$,index/(? p)$ fromRest_framework.routersImportDefaultrouter Router=Defaultrouter () router.register ('Index', views. Indexviewset) Urlpatterns=[url (r'^', include (Router.urls)),]classIndexviewset (viewsets. Modelviewset): Queryset=models. UserInfo.objects.all () Serializer_class=Indexserializer Pagination_class=P2classIndexserializer (serializers. Modelserializer):classMeta:model=models. UserInf

1. Parser: Parse the requested data-the request body for parsing. The parser is not called when you do not take the request body data.classUsersview (apiview):defGet (self,request,*args,**Kwargs):returnResponse ('...') defPost (self,request,*args,**Kwargs):## Application/json #print (request._request.body) # B "xxxxx" Decode () Json.loads #Print (request._request. POST) # None #when the data format of the POST request is Applic

' Return Jsonresponse (ret)??Rest_framework built-in authentication class:BasicAuthentication # 基于浏览器实现的 Basic 认证, ftp 使用网页登录时使用的就是 Basic 认证SessionAuthentication # 基于 django 的 user.is_active 进行认证TokenAuthentication # 简单的基于 token 的认证RemoteUserAuthentication # 简单的远程用户认证实现??To configure the globally active authentication class and anonymous users:自定义的认证类如果每次都在指定的类中使用 authentication_classes 指定那么就有可能出现大量的重复代码我们可以通过

': ( ' DataAPI.common.api_exception.custom_exception_handler ' ) # ' Exception_ HANDLER ': ' My_project.my_app.utils.custom_exception_handler ' } two. return value As the exception shows, we often return the same type of value, as shown below, basic data format and paging format (later) { "desc": "Page Success", #描述信息 "code": #响应码 to start with 2 is the success of "data": { "detail": array[2], #当前页数据列表 " Total ": 6, #页面总数 " page ": 2 #当前页面

determines the correct content type based on the request header information of the client to return it to the client. You only need the following code: Iii. Status Code Do we know that various statuses will be returned when an http request is sent, but they are all simple numbers, such as 200 and 404, these pure numeric identifiers may not be clear enough, or the client may not be clear about the error message or even fail to see it, so django-

': 100 }}# class authentication (apiview ): # "# authentication class #" "# def authenticate (self, request): # token = request. _ request. get. get ('Token') # token_obj = models. usertoken. objects. filter (token = token ). first () # if not token_obj: # Raise exceptions. authenticationfailed ('user authentication failed') # the two fields are assigned to the request in the rest

Self.check_permissions (Request) #1.2.3 Access frequency related self.check_throttles ( Request1th. 2.1 Steps:class Apiview (View): def perform_authentication (self, request): #1.2.1.1 request.userStep 1.2.1.1:class Request (object): @property def User: #此时的self is rest_framework Request Object ifnot'_user'): With Wrap _attributeerrors ():#1.2.1.1.1 self._authenticate

Django REST frameworkis a framework based on Django , and REST framework How is it? 反向生成url ?In the previous example, you know that REST framework