我的站点有很多 View ,我想检查每个 View 中的 cookie,如果没有,则保存它们。但是网站有很多浏览量。
如何对所有 View 只执行一次?
最佳答案
您可以编写自定义中间件来实现您的目标,因为您有很多 View ,当然您不能更新每个 View 。自定义中间件将是这样的:
class MyCookieProcessingMiddleware(object):
# your desired cookie will be available in every django view
def process_request(self, request):
# will only add cookie if request does not have it already
if not request.COOKIES.get('your_desired_cookie'):
request.COOKIES['set_your_desired_cookie'] = 'value_for_desired_cookie'
# your desired cookie will be available in every HttpResponse parser like browser but not in django view
def process_response(self, request, response):
if not request.COOKIES.get('your_desired_cookie'):
response.set_cookie('set_your_desired_cookie', 'value_for_desired_cookie')
return response
在您的 settings.py
文件中,只需将路径添加到您的自定义中间件,如下所示:
MIDDLEWARE_CLASSES = (
'django.contrib.sessions.middleware.SessionMiddleware',
'MyProject.myapp.mymodule.MyCookieProcessingMiddleware', # path to custom class
)
中间件的顺序很重要,您的顺序在 SessionMiddleware 之后。
https://stackoverflow.com/questions/15612444/