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This article introduces the knowledge of "how to add decorators to class views in Django development". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Scene:

In Django development, what if we use a class view, such as ListView, DetailView, UpdateView, etc., and we want to add a decorator to this view to achieve some function?

Environment:

Python 3.6

Django 1.11

Incorrect usage and implementation: def is_login (func): def wrapper (request,*args,**kwargs): # if the user is not detected, jump to the login page if not request.session.get ("user"): return redirect (reverse ('login')) return func (request,*args,**kwargs) return wrapper

@ is_loginclass myinfor (generic.ListView): pass error message:

AttributeError: 'function' object has no attribute' as_view'

Correct usage implementation method 1: from django.utils.decorators import method_decorator

Def is_login (func): def wrapper (request,*args,**kwargs): # if the user is not detected, jump to the login page if not request.session.get ("user"): return redirect (reverse ('login')) return func (request,*args,**kwargs) return wrapper

# use method_decorator to wrap the decorator. At the same time, the name parameter is required. Dispatch supports all request types, including get, post, etc. If you specify a request method, change it to: name='get'. Tutorial Origin Server (bigyoung.cn)

@ method_decorator (is_login, name='dispatch') class myinfor (generic.ListView): pass implementation method 2:

Through routing configuration: (not recommended)

Origin server of the tutorial: BigYoung.cn'''

From django.utils.decorators import never_cache

Urlpatterns + = [path ('myinfo/', never_cache (myinfor.as_view ()), name='myinfo'),] Advanced usage:

If you have more than one decorator to decorate, the following are multiple decorators:

Def is_login (func): def wrapper (request,*args,**kwargs): # if the user is not detected, jump to the login page if not request.session.get ("user"): return redirect (reverse ('login')) return func (request,*args,**kwargs) return wrapper

Def is_admin (func): # detects whether it is an admin administrator. Tutorials bigyoung.cn def wrapper (request,*args,**kwargs): pass return wrapper "how to add decorators to class views in Django development" ends here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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