FBV和CBV區別

    CBV 內部dispatch 做了分發
    FBV沒辦法用類的繼承,多型
    # DJango的View只做了CBV的分發
        def dispatch(self, request, *args, **kwargs):
            # GET POST
            # BookView().get
            if request.method.lower() in self.http_method_names:
                handler = getattr(self, request.method.lower(), self.http_method_not_allowed)
            
 
else:
                handler = self.http_method_not_allowed
            return handler(request, *args, **kwargs)

APIView 和View的區別

    -- APIView繼承了View
        -- 重寫了as_view方法
            -- 豁免csrf
        --  def dispatch(self, request, *args, **kwargs):
                self.args = args
                self.kwargs 
 
= kwargs
                
                # 重新封裝request
                # 新的request變成 Request的例項化物件
                # 舊的request變成了_request
                request = self.initialize_request(request, *args, **kwargs)
                self.request = request
                。。。。。。
        --  def initialize_request(self, request, *args, **kwargs):
                parser_context 
 
= self.get_parser_context(request)

                return Request(
                    request,
                    parsers=self.get_parsers(),
                    authenticators=self.get_authenticators(),
                    negotiator=self.get_content_negotiator(),
                    parser_context=parser_context
                )
        -- Class Request(object):
                self._request = 舊的request
                def query_params(self):
                    return self._request.GET
                def data(self):
                    return post請求的資料