Python16_day17 "Django_session, Ajax"

First, Session

1.settings.py

Session_engine = ' django.contrib.sessions.backends.db '   # engine (default)        session_cookie_name = "SessionID"                       # Session cookie saved on browser key, i.e.: sessionid= random string (default)    Session_cookie_path = "/"                               # SESSION Cookie saved Path (default)    Session_cookie_domain = None                             # SESSION COOKIE saved domain name (default)    session_cookie_secure = False                            # Whether the HTTPS transport cookie (default)    session_cookie_httponly = True                           # If the SESSION's cookie only supports HTTP transport (default)    Session_cookie_ Age = 1209600                             # SESSION Cookie Expiration date (2 weeks) (default)    session_expire_at_browser_close = True                  # Whether to close the browser so that the SESSION expires (default)    session_save_every_request = True                       

2.views.py

1 defHome (Request):2     #v = Request. Cookies.get (' UUU ')3v = request.session.get ('User')4     ifV:5         returnHttpResponse ("Login succeeded: [%s]"%v)6     Else:7         returnredirect'/login/')8 9 Ten defLogin (Request): One     ifRequest.method = ='GET': A         returnRender (Request,'login.html', {'msg':"'}) -     Else: -U = Request. Post.get ('User') thep = Request. Post.get ('pwd') -ct = UserInfo.objects.filter (username=u, password=p). Count () -         ifCT: -obj = Redirect ('/home/') +             #method One write cookie -             #Obj.set_cookie (' UUU ', U, +) +             #method Two write session A             #Generate random string at             #Send to client -             #Save Server -request.session['User'] =u -request.session['Pass'] =P -             returnobj -         Else: in             returnRender (Request,'login.html', {'msg':"user name or password is wrong!"})

3.session Other methods

 defIndex (Request):#get, set, delete data in sessionrequest.session['K1'] Request.session.get ('K1', None) request.session['K1'] = 123Request.session.setdefault ('K1', 123)#exists then does not set        delrequest.session['K1']         #all keys, values, key-value pairsRequest.session.keys () request.session.values () Request.session.items () request.session. Iterkeys () request.session.itervalues () Request.session.iteritems ( )#random string for user sessionRequest.session.session_key#Delete all data with session expiration date less than current daterequest.session.clear_expired ()#Check if the random string in the user session is in the databaseRequest.session.exists ("Session_key")         #Delete all session data for the current userRequest.session.delete ("Session_key") Request.session.set_expiry (value)*if value is an integer, the session will expire after a few seconds. *if value is a datatime or timedelta,session, it will expire after this time. *if value is 0, the user closes the browser session and expires. * If value is none,session, it will depend on the global session expiration policy.

Python16_day17 "Django_session, Ajax"