title: handling one-to-one user relations with controllers
body: <p>I've been wondering if there is any better way to handle one-to-one relations with Rails.</p>
  
  <p>I have a User model, which has_one Subscription. When the user is logged in, I get the subscription by retreiving current_user.subscription, so that finding subscriptions by id in URL is unncessary. </p>
  
  <p>Right now, when user wants to update his subscription, he gets the url:
  /subscription/3/?plan_id=2</p>
  
  <p>But the subscription 3 is unncessary, and the other thing is I don't want to be showing the number of subscriptions (ids) to the user.</p>
  
  <p>Whats would be a better solution for this? Would you guys bother with that?</p>
  
  <p>Thanks</p>