title: Converting Check-boxes to Multiple Select Drop-down Rails
body: <p>I am newbie to rails and was working with many to many relationships. Right now I display the options as check-boxes with labels. I want to display them as check-boxes in drop-down fashion to look compact.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>    = f.collection_check_boxes :provision_ids, Provision.all, :id, :name do |b|
        = b.check_box
        = b.label
  </code></pre>