title: Rails 4 Syntax - Multiple Conditions
body: <p>How would I write this correctly?</p>
  
  <pre><code>Request.pending.where(.....)  ## Request.pending = request.state_id in (1..3)
  </code></pre>
  
  <p>where these are the conditions:</p>
  
  <pre><code>approver1_id = current_user and state_id = 1
  or
  approver2_id = current_user and state_id = 2
  or
  approver3_id = current_user and state_id = 3
  </code></pre>
  
  <p>It would be really nice if I could put these conditions in the model for use in other controllers/views, too, because I will use these conditions quite often throughout the app.</p>