title: Simple_form_for time range
body: <p>i'd like to change minutes range. I have in haml:</p>
  
  <pre><code>= f.input :open_from, :as =&gt; :time, :label =&gt; "open from:"
  </code></pre>
  
  <p>and i want minutes only 0, 15, 30, 45, not 0..59. Any ideas?</p>