title: rails 3 routing question
body: <p>This is probably quite simple, but how can I make a params optional?</p>
  
  <pre><code>resources :places
  match 'register/:id' =&gt; 'places#new', :as =&gt; :register
  </code></pre>
  
  <p>currently... it breaks if the <code>:id</code> is not passed which most of the time it won't be.</p>
  
  <pre><code>&lt;%= link_to "Place Sign Up", register_path %&gt; 
  </code></pre>