from django.shortcuts import render
from django.shortcuts import HttpResponse
from django.shortcuts import redirect
 
# 以函数方式定义
def login(request):
    if request.method == "GET":
        return render(request, "login.html")
    elif request.method == "POST":
        user = request.POST.get("user")
        pwd = request.POST.get("pwd")
        if user == "admin" and pwd == "123":
            return redirect("/index/")
        else:
            return render(request, "login.html")
    else:
        # PUT,DELETE,HEAD...
        return redirect("/index/") 

from django.shortcuts import render
from django.shortcuts import HttpResponse
from django.shortcuts import redirect
        
# 以类方式定义
from django.views import View
 

  
class Home(View):
 
     
    # 父类会通过dispatch去获取request信息并判断，然后执行相关方法，返回数据也要通过dispatch方法，before、after可以再执行方法前做一些自定义操作
    def dispatch(self, request, *args, **kwargs):
        # 调用父类中的dispatch
        print("before")
        result = super(Home, self).dispatch(request, *args, **kwargs)
        print("after")
        return result
 
     
    def get(self, request):
        print(request.method)
        return render(request, "home.html")
 
     
    def post(self, request):
        print(request.method)
        return render(request, "home.html")

return HttpResponse("字符串")

return render(request, "html模板路径", {data: data})

return redirect("/url路径")

# get方式
user = request.GET.get("user")

# post方式
user = request.POST.get("user")

v2 = request.POST.getlist("favor")