Django--视图装饰器
一、基本使用
from django.views.decorators.http import require_http_methods @require_http_methods(["GET", "POST"]) def my_view(request): # I can assume now that only GET or POST requests make it this far pass
二、视图装饰器
在类视图中使用为函数视图准备的装饰器时,不能直接添加装饰器,需要使用method_decorator将其转换为适用于类视图方法的装饰器。
1.method_decorator装饰器使用name参数指明被装饰的方法
from django.utils.decorators import method_decorator # 定义装饰器 def my_decorator(func): def wrapper(request, *args, **kwargs): print('自定义装饰器被调用了') print('请求路径%s' % request.path) return func(request, *args, **kwargs) return wrapper # 为全部请求方法添加装饰器 @method_decorator(my_decorator, name='dispatch') class DemoView(View): def get(self, request): print('get方法') return HttpResponse('ok') def post(self, request): print('post方法') return HttpResponse('ok') # 为特定请求方法添加装饰器 @method_decorator(my_decorator, name='get') class DemoView(View): def get(self, request): print('get方法') return HttpResponse('ok') def post(self, request): print('post方法') return HttpResponse('ok')
2.如果需要为类视图的多个方法添加装饰器,可以直接在需要添加装饰器的方法上使用method_decorator
# 为特定请求方法添加装饰器 class DemoView(View): @method_decorator(my_decorator) # 为get方法添加了装饰器 def get(self, request): print('get方法') return HttpResponse('ok') @method_decorator(my_decorator) # 为post方法添加了装饰器 def post(self, request): print('post方法') return HttpResponse('ok') def put(self, request): # 没有为put方法添加装饰器 print('put方法') return HttpResponse('ok')