# OpenID authentication **URL:** \ **Category:** Rails\ **Created:** [November 23, 2008, 2:14pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942 "2008-11-23T14:14:50Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 23, 2008, 2:14pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942/1 "2008-11-23T14:14:50Z")
Hi there, I am trying to use the OpenID authentication plugin of DHH in conjuction with ruby-openid 2.1.2 gem put it seems there is a problem because in my login action the plugin redirects me to the openid provider and then i have the exception when i have to render or redirect to another page The exception is: ActionController::DoubleRenderError (Can only render or redirect once per action): Have you even encountered smth like that ? Thank you PS my session starts successfully the problem is that it does not refresh the page or redirect somewhere so i have to do it manually to see tha i am logged in ---
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 24, 2008, 11:49pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942/2 "2008-11-24T23:49:05Z")
## You might want to take a look at the OpenID Rails Kit ( [http://railskits.com/openid/](http://railskits.com/openid/)), which gives you a Rails sample app with the openid plugin integrated with the restful\_authentication plugin so you can have both types of logins, ready to go. Benjamin C. [http://railskits.com/](http://railskits.com/) - Ready-made Rails code [http://catchthebest.com/](http://catchthebest.com/) - Team-powered recruiting [http://www.bencurtis.com/](http://www.bencurtis.com/) - Personal blog ---
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 25, 2008, 6:56am UTC](https://www.ruby-forum.com/t/openid-authentication/153942/3 "2008-11-25T06:56:43Z")
I second Ben, check out a working demonstration application and see what you are doing different. It sounds like you may be doing some rendering outside of the authenticate\_with\_open\_id block, but its hard to say without seeing your code. ---
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 25, 2008, 10:02pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942/4 "2008-11-25T22:02:52Z")
Ok guys i ll give a second look, the strange thing is tha my current setup works but i am rewriting to port it Rails 2.x.x but somethings goes fundamendally wrong. So far the problem is that OpenID redirects as it should do but then i cannot redirect back to index and say hello user ---
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 25, 2008, 10:23pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942/5 "2008-11-25T22:23:57Z")
What I have in my log is: OpenIdAuthentication::Association Load (0.000810) SELECT \* FROM `open_id_authentication_associations` WHERE (`open_id_authentication_associations`.`server_url` = ‘http:// [www.myopenid.com/server](http://www.myopenid.com/server)’) Redirected to [http://www.myopenid.com/server?openid.assoc\_handle={HMAC-SHA1}{492c6b8f}{at%2BLWQ%3D%3D}&openid.claimed\_id=http%3A%2F%2F6pna.com%2F&openid.identity=http%3A%2F%2Fpanosjee.myopenid.com%2F&openid.mode=checkid\_setup&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1&openid.realm=http%3A%2F%2F127.0.0.1%3A3000%2F&openid.return\_to=http%3A%2F%2F127.0.0.1%3A3000%2Flogin%2Fnow%3F\_method%3Dpost%26open\_id\_complete%3D1](http://www.myopenid.com/server?openid.assoc_handle=%7BHMAC-SHA1%7D%7B492c6b8f%7D%7Bat%2BLWQ%3D%3D%7D&openid.claimed_id=http%3A%2F%2F6pna.com%2F&openid.identity=http%3A%2F%2Fpanosjee.myopenid.com%2F&openid.mode=checkid_setup&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1&openid.realm=http%3A%2F%2F127.0.0.1%3A3000%2F&openid.return_to=http%3A%2F%2F127.0.0.1%3A3000%2Flogin%2Fnow%3F_method%3Dpost%26open_id_complete%3D1) and then ActionController::DoubleRenderError (Can only render or redirect once per action): /Library/Ruby/Gems/1.8/gems/actionpack-2.1.2/lib/action\_controller/ base.rb:842:in `render\_with\_no\_layout’ It fails only when openid url is correct, quite strange ---
**Author:** ![PanosJee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/90db22/32.png) [@PanosJee](https://www.ruby-forum.com/u/PanosJee)\ **Post date:** [November 26, 2008, 11:03pm UTC](https://www.ruby-forum.com/t/openid-authentication/153942/6 "2008-11-26T23:03:40Z")
Just in case anyone stumbs on this thread again: You should go exactly what the sample code does and that is why the plugin is looking for a identity\_url or openid\_url param So in your form there should be a an input with name anything like user [identity\_url] wont do!