title: Ohm, find all records from array of ids
body: <p>I am looking for a way to find all Ohm affiliated objects with one query, by feeding it an array of attributes that are indexed. In Mongoid, this is done with something like:</p>
  
  <pre><code>Foo.any_in(:some_id =&gt; [list_of_ids])
  </code></pre>
  
  <p>ActiveRecord has the <code>find_all</code> family of methods. </p>
  
  <p>I essentially want to be able to pull N records from the data store without calling find() 30 times individually.</p>