Implement Google Analytics funnel for sign up with authlogic

I have a rails appli开发者_运维技巧cation for which uses authlogic for sign up. I am trying to implement a google analytics funnel to find out how many people signed up. The way authlogic works is, when a user creates an account an email is sent to him with an activation link. When the users clicks on the activation link his sign up is completed. I was wondering if google analytics funnel would give me the correct stats as the user will have to leave the site in order to click his activation link.

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The way I went about this is,

1. Created a funnel for the user sign-up page(where the user enters his credentials and hits the create account button) and made the subsequent url unique.

2. Added an Event to the create account button click.

3. Created a goal for the activation url.