# Single signon / openbar type of app

**URL:** <https://www.ruby-forum.com/t/single-signon-openbar-type-of-app/123422>\
**Category:** Rails\
**Created:** [December 17, 2007, 4:20pm UTC](https://www.ruby-forum.com/t/single-signon-openbar-type-of-app/123422 "2007-12-17T16:20:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jjkiesch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/bc79bd/32.png) [@jjkiesch](https://www.ruby-forum.com/u/jjkiesch)\
**Post date:** [December 17, 2007, 4:20pm UTC](https://www.ruby-forum.com/t/single-signon-openbar-type-of-app/123422/1 "2007-12-17T16:20:01Z")

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I recently stumbled onto the OpenBar ([http://www.37signals.com/](http://www.37signals.com/)  
openbar) feature within the different 37signals apps and would like to  
do something like this for the internal apps I am working on right  
now.

I’m almost finished with a little custom openid server app that  
manages profiles for employees as well as being able to define what  
sites users have access to. As of right now, they can sign into that  
server and see their apps and just click on a link from there to sign  
in, but having something always on each site with a list of available  
apps would be even better.

I’m just wondering what would be the best way to do something like  
that. The only way I can think of is building a web service on top of  
my openid server that each app can request the other apps for the  
currently logged in user, but as I haven’t worked with web services  
much, I’m not sure about the most appropriate way of getting/storing  
the data. I’m guessing I would want to cache the request until the  
user logs out so that I wouldn’t be sending a request to my openid app  
each time a page is loaded, but I’m not sure.

I would love to hear any suggestions from anyone!  
Thanks.