There are three main types of "Global" variables in Zope: - REQUEST variables - Session Variables - Persistent Variables (aka Properties) Request variables are globals that live only for the life of the request. You set them using REQUEST.set('foo', value) and get them using REQUEST['foo']. Session variables live for the life of a user's web session. They are accessible only by that user. To set these you use REQUEST.SESSION.set('foo', value) and to get them use REQUEST.SESSION['foo']. Properties live indefinitely and are saved in the ZODB as metadata of specific objects (such as folders or documents). To make it "Global" to all of Zope, you would set them on the Root Folder. Properties are accessible to all users of Zope. To set/get these you use: object.setProperty('foo', value, type) and object.getProperty('foo'). Note that setting properties is more expensive then session variables, and session variables are more expensive to set then request variables. hth, -Casey On Thu, 2002-06-27 at 14:28, McDonnell, Larry wrote:
Hi,
What are the Zope rules in which a variables are classifed as a global variables? Can I define a varaible to be placed in the global stack? If so how? Or is there a better way track variables through the site. Also is there a command that will list the namespace? Thanks.
Larry McDonnell
Proton Energy Systems 50 Inwood Rd. Rocky Hill, CT 06067 (860) 571-6533 ext. 531 Email:lmcdonnell@protonenergy.com www.protonenergy.com
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