Routing error?

I hope this will be an easy question...

I'm trying to migrate from Rails 1.2 to 2.1, and I must admit, the routing is somewhat confusing me.

When I update a form, I'm getting a routing error. ("No route matches {id}") It's because the update statement is getting assembled incorrectly somehow and the action is getting set to the id instead of "update"! I don't understand how this is happening. Does it have to do with routing?

Here's my development.log showing what I'm talking about.

Parameters: {"commit"=>"Save", "authenticity_token"=>"5d5f2530096051f30a11d94701281b54a537a012", "action"=>"13", "adminbillingrate"=>{"rate"=>"30", "employeetype_codeid"=>"119"}, "controller"=>"adminbillingrates"}

Any help would be appreciated as always!! ~Ali

I figured it out. I was using form_tag :action => 'update' instead of form_for and that was causing the update statement to be incorrectly assembled.

Thanks anyway!!