使用cbv實現檢視

from django.views import View
from django.utils.decorators import method_decorator


class LoginView(View):

    def get(self, request):
        return
 
 render(request, "login.html")

    def post(self, request):
        user = request.POST.get("name")
        pwd = request.POST.get("pwd")
        if user == "safly" and pwd == "123":
            # 登陸成功
            # 寫session
            request.session["user2"] = user
            request.session.set_expiry(5
 
)
            return redirect("/index/")

def index(request):
    return render(request,"index.html")
  

   
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CBV結合裝飾器

直接加在檢視類上，但method_decorator必須傳 name 關鍵字引數

from django.views import
 
 View
from django.utils.decorators import method_decorator


def wrapper(func):
    @wraps(func)
    def inner(request, *args, **kwargs):
        # 登入校驗
        cookie_k = request.session.get("user01", None)
        if cookie_k:
            # 表示已經登入的使用者
            ret = func(request, *args, **kwargs)
            return ret
        else:
            # 滾去登入
            return redirect("/login/")

    return inner


class LoginView(View):

    def get(self, request):
        return render(request, "login.html")

    def post(self, request):
        user = request.POST.get("name")
        pwd = request.POST.get("pwd")
        if user == "safly" and pwd == "123":
            # 登陸成功
            # 寫session
            request.session["user01"] = user
            # request.session.set_expiry(5)
            return redirect("/index/")


@method_decorator(wrapper, name="get")
class IndexView(View):
    def get(self, request):
        user = request.session.get("user01", "遊客")
        return render(request, "index.html", {"user": user})
  

   
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* 加在CBV檢視的get或post方法上*

# @method_decorator(wrapper, name="get")
class IndexView(View):
    @method_decorator(wrapper)
    def get(self, request):
        user = request.session.get("user02", "遊客")
        return render(request, "index.html", {"user": user})

  

   
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* 加在dispatch方法上*

# @method_decorator(wrapper, name="get")
class IndexView(View):
    ## 這麼寫所有的請求方法都要做登入校驗
    @method_decorator(wrapper)
    def dispatch(self, request, *args, **kwargs):
        return super(IndexView,self).dispatch(request,*args,**kwargs)

    # @method_decorator(wrapper)
    def get(self, request):
        user = request.session.get("user04", "遊客")
        return render(request, "index.html", {"user": user})

  

   
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CSRF Token

CSRF Token相關裝飾器在CBV只能加到dispatch方法上

備註：

csrf_protect，為當前函式強制設定防跨站請求偽造功能，即便settings中沒有設定全域性中介軟體。
csrf_exempt，取消當前函式防跨站請求偽造功能，即便settings中設定了全域性中介軟體

  

   
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from django.views.decorators.csrf import csrf_exempt, csrf_protect


class HomeView(View):

    @method_decorator(csrf_exempt)
    def dispatch(self, request, *args, **kwargs):
        return super(HomeView, self).dispatch(request, *args, **kwargs)

    def get(self, request):
        return render(request, "home.html")

    def post(self, request):
        print("Home View POST method...")
        return redirect("/index/")
  

   
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