标签:定向 cbv 就是 装饰器 response 字符 通过 head 请求
项目文件夹下的urls.py文件中的url写法: from django.conf.urls import url,include from django.contrib import admin from app01 import views urlpatterns = [ # url(r‘^admin/‘, admin.site.urls), #首页 url(r‘^$‘, views.base), url(r‘^app01/‘, include(‘app01.urls‘)), url(r‘^app02/‘, include(‘app02.urls‘)), ] app01下urls.py内容写法 from django.conf.urls import url from django.contrib import admin from app01 import views urlpatterns = [ # url(r‘^admin/‘, admin.site.urls), url(r‘^$‘, views.app01base), url(r‘^index/‘, views.index), ] app02下urls.py内容写法 from django.conf.urls import url from django.contrib import admin from app02 import views urlpatterns = [ # url(r‘^admin/‘, admin.site.urls), url(r‘^$‘, views.app02base), url(r‘^home/‘, views.home), ]
def index(request): #http相关请求信息---封装--HttpRequest对象 if request.method == ‘GET‘: print(request.body) #获取post请求提交过来的原始数据 print(request.GET) #获取GET请求提交的数据 # print(request.META) # 请求头相关信息,就是一个大字典 print(request.path) #/index/ 路径 print(request.path_info) #/index/ 路径 print(request.get_full_path()) #/index/?username=dazhuang&password=123 return render(request,‘index.html‘) else: print(request.body) # b‘username=dazhuang‘ print(request.POST) #获取POST请求提交的数据 return HttpResponse(‘男宾三位,拿好手牌!‘)
HttpResponse --- 回复字符串的时候来使用 render --- 回复一个html页面的时候使用 redirect -- 重定向 示例: def login(request): if request.method == ‘GET‘: return render(request,‘login.html‘) else: username = request.POST.get(‘username‘) password = request.POST.get(‘password‘) if username == ‘taibai‘ and password == ‘dsb‘: # return render(request,‘home.html‘) return redirect(‘/home/‘) #重定向 else: return HttpResponse(‘滚犊子,赶紧去充钱!!!‘) #首页 def home(request): return render(request,‘home.html‘)
FBV -- function based view def home(request): print(‘home!!!‘) return render(request,‘home.html‘)
CBV -- class based view views.py from django.views import View class LoginView(View): # 通过请求方法找到自己写的视图类里面对应的方法 def get(self,request): return render(request,‘login2.html‘) def post(self,request): username = request.POST.get(‘uname‘) password = request.POST.get(‘pwd‘) print(username,password) return HttpResponse(‘登录成功!‘) urls.py url(r‘^login2/‘, views.LoginView.as_view()),
CBV通过不同的请求方法找到对应的试图类中的方法
关键点,反射
def dispatch(self, request, *args, **kwargs): if request.method.lower() in self.http_method_names: handler = getattr(self, request.method.lower(),
self.http_method_not_allowed) #反射
CBV的dispatch方法
from django.views import View class LoginView(View): # GET def dispatch(self, request, *args, **kwargs): print(‘请求来啦‘) ret = super().dispatch(request, *args, **kwargs) print(‘到点了,走人了‘) return ret def get(self,request): print(‘get方法执行了‘) return render(request,‘login2.html‘) def post(self,request): username = request.POST.get(‘uname‘) password = request.POST.get(‘pwd‘) print(username,password) return HttpResponse(‘登录成功!‘)
FBV加装饰器
def n1(f): def n2(*args,**kwargs): print(‘请求之前‘) ret = f(*args,**kwargs) print(‘请求之后‘) return ret return n2 @n1 def home(request): print(‘home!!!‘) return render(request,‘home.html‘)
CBV加装饰器
from django.views import View from django.utils.decorators import method_decorator def n1(f): def n2(*args,**kwargs): print(‘请求之前‘) ret = f(*args,**kwargs) print(‘请求之后‘) return ret return n2 # @method_decorator(n1,name=‘get‘) #方式三 class LoginView(View): # GET # @method_decorator(n1) #方式2 给所有方法加装饰器 def dispatch(self, request, *args, **kwargs): # print(‘请求来啦‘) ret = super().dispatch(request, *args, **kwargs) # print(‘到点了,走人了‘) return ret # @method_decorator(n1) #方式1 def get(self,request): print(‘get方法执行了‘) return render(request,‘login2.html‘) def post(self,request): username = request.POST.get(‘uname‘) password = request.POST.get(‘pwd‘) print(username,password) return HttpResponse(‘登录成功!‘)
标签:定向 cbv 就是 装饰器 response 字符 通过 head 请求
原文地址:https://www.cnblogs.com/zengluo/p/13389017.html