Django REST 框架的 FBV 与 CBV 选择

from django.shortcuts import render,HttpResponse
import json

def users(request):    
    user_list = {
        "name": "tom",
        "age":27
    }
    return HttpResponse(json.dumps(user_list))

from django.contrib import admin
from django.urls import path
from tutorial01 import views

urlpatterns = [
    path('users',views.users),
    path('admin/', admin.site.urls),
]

from django.shortcuts import render,HttpResponse
from django.views import View


class UsersView(View):
    # 如何知道数据传输方法？
    # 通过反射实现
    # getattr(obj, request.method)
    
    def get(self, request, *args, **kwargs):
        return HttpResponse("GET")

    def post(self, request, *args, **kwargs):
        return HttpResponse("POST")

from django.contrib import admin
from django.urls import path
from tutorial01 import views

urlpatterns = [
    path('users',views.UsersView.as_view()),
    path('admin/', admin.site.urls),
]

class View:
    # ...
    def dispatch(self, request, *args, **kwargs):
        # Try to dispatch to the right method; if a method doesn't exist,
        # defer to the error handler. Also defer to the error handler if the
        # request method isn't on the approved list.
        if request.method.lower() in self.http_method_names:
            # 通过 getattr 实现反射机制
            handler = getattr(self, request.method.lower(), self.http_method_not_allowed)
        else:
            handler = self.http_method_not_allowed
        return handler(request, *args, **kwargs)

class MyBaseView(object):
    def dispatch(self, request, *args, **kwargs):
        print('before')
        # 执行父类的 dispatch 方法
        # super 除了可以让子类继承父类的方法，同时还可以执行子类的其他父类的 方法
        ret = super(MyBaseView, self).dispatch(request, *args, **kwargs)
        print('after')
        return ret


# 继承时，前面的类优先级高
class UsersView(MyBaseView, View):
    def get(self, request, *args, **kwargs):
        print('get')
        return HttpResponse("GET")

    def post(self, request, *args, **kwargs):
        return HttpResponse("POST")

Quit the server with CTRL-BREAK.
before
get
after