[pmwiki-users] Determine whether the visitor is logged in

Peter Brink peter.brink at brinkdata.se
Thu May 5 08:18:14 CDT 2005

Hans skrev:

 > Thursday, May 5, 2005, 1:27:18 PM, Peter wrote:
 >> I'd like to know this too. For example, I'd like to be able to adapt 
 >> the items in an action list based on whether the user is logged in or
 >> not. Using the new (since beta29) authentification system I'm able to
 >> test whether or not the user is logged in as admin. I'd like to be
 >> able to write a conditional markup such as for example:
 >>(:if isauthenticated true:) Blah, Blah (:ifend:).
 > see http://www.pmwiki.org/wiki/PmWiki/ConditionalMarkup
 > you can use (:if auth admin :)....  (:if auth edit :) ..... etc

Ok. But let's say that the user is not yet logged in, and I have a top 
menu such as:

(:if auth edit:)[[{$Name}?action=edit | Redigera sida]] | 
[[{$Name}?action=attr | Egenskaper ]] | [[{$Name}?action=diff | 
Sidhistorik]] | [[PmWiki/DocumentationIndex | Wiki hjälp ]] | 
(:ifend:)[[{$Name}?action=print | Skriv ut]]

Then the a user with edit rights will not see a edit link before logging 
in, so you would like to have something like:

(:if ! isauthentificated:) [[Main.Loggin | Loggin]](:ifend:)

otherwise you will end up with a moment 22 - you can't (easily) 
authenificate yourself because there's no action link that requests 
authentification information.

I have already run into this problem and presently I solve it by having 
a Loggin page which is read protected, thus forcing me to logg in. By 
bookmarking that page I can logg in to the site and still present an 
action link less appearance to the casual viewer. See 
http://www.rollspelshornan.se for an example. The problem with that 
approach is that I need to add any editor to the list of read 
authentificated users of the loggin page, which can easily become an hassle.

/Peter Brink

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