title: RUBY RAILS - Allow user to write in option that is not in drop down list
body: <p>Still pretty new to ruby.. How would I add a feature to this drop down to allow users to enter an attribute that is not in the drop down list. Right now when I try to add something it says no results matched.</p>
  <pre><code>        &lt;%= f.select(:attribute_type, @attribute_types, {include_blank: true}, class: 'form-control selectpicker', data: {'live-search' =&gt; 'true'}) %&gt;
  </code></pre>