Cookies¶
Description
Handling session and other cookies in Plone
Introduction¶
Setting and getting cookies
Reading cookies¶
Usually you want to read incoming cookies sent by the browser.
Example:
self.request.cookies.get("cookie_name", "default_value_if_cookie_not_set")
Default Plone cookies¶
Typical Plone cookies:
# Logged in cookie
__ac="NjE2NDZkNjk2ZTMyOjcyNzQ3NjQxNjQ2ZDY5NmUzNjM2MzczNw%253D%253D";
# Language chooser
I18N_LANGUAGE="fi";
# Status message
statusmessages="BURUZXJ2ZXR1bG9hISBPbGV0IG55dCBraXJqYXV0dW51dCBzaXPDpMOkbi5pbmZv"
# Google Analytics tracking
__utma=39444192.1440286234.1270737994.1321356818.1321432528.21;
__utmz=39444192.1306272121.6.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none);
__utmb=39444192.3.10.1321432528;
__utmc=39444192;
# Plone copy-paste clipboard
__cp="x%25DA%2515%258AA%250A%25800%250C%2504%25A3%25A0%25E0E%257CF%25FF%25E4%2529%2587%25801%25D5B%25B3-%25F8%257B%25D3%25C3%250E%25CC%25B0i%2526%2522%258D%25D19%2505%25D2%2512%25C0P%25DF%2502%259D%25AB%253E%250C%2514_%25C3%25CAu%258B%25C0%258Fq%2511s%25E8k%25EC%250AH%25FE%257C%258Fh%25AD%25B3qm.9%252B%257E%25FD%25D1%2516%25B3"; Path=/
Zope session cookie¶
This cookie looks like:
_ZopeId="25982744A40dimYreFU"
It is set first time when session data is written.
Language cookie¶
I18N_LANGUAGE is set by portal_languages tool. Disable it by Use cookie for manual override setting in portal_languages.
Session cookie lifetime¶
Setting session cookie lifetime
Sanitizing cookies for the cache¶
You don't want to store HTTP responses with cookies in a front end cache server, because this would be a leak of other users' information.
Don't cache pages with cookies set. Also with multilingual sites it makes sense to have unique URLs for different translations as this greatly simplifies caching (you can ignore language cookie).
Note that cookies can be set:
- by the server (Plone itself)
- on the client side, by Javascript (Google Analytics)
... so you might need to clean cookies for both incoming HTTP requests and HTTP responses.
Table Of Contents
About Plone
This is documentation for Plone®. Plone is a popular, open source, content management system written in Python programming language.