OpenID authentication

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

You might want to take a look at the OpenID Rails Kit (, 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.

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.

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

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://') Redirected to{HMAC-SHA1}{492c6b8f}{at%2BLWQ%3D%3D}&

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

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!