title: How to add a scope for multiple enums in rails
body: <p>I have a select that displays all enums of an object:</p>
  
  <pre><code>&lt;%= f.select( :state_user 
              , User.states.keys.map {|state| [state.titleize,state] }) %&gt;
  </code></pre>
  
  <p>How can I create an scope that allows me to select multiple states?</p>
  
  <p>For example I want to filter all users that are either inactive or suspended. </p>
  
  <p>Thanks</p>