title: How can I filter items in ngRepeat from array of numbers?
body: <p>I'm struggling to find a way of filtering a set of results in an ng-repeat, based on an array of numbers.  The numbers can represent results I want to see, or not see.  I'm able to use a filter in the view and filter by one number, which works, but I want to put an array there and filter by the array.  I don't care if the filter is in the view, the controller, or a separate filter.</p>
  
  <p>The code below successfully filters topics with the forum id of 60</p>
  
  <pre><code>  &lt;div ng-repeat="topic in topics | filter:{forum_id:60}"&gt;
      Forum ID: {{topic.forum_id}} Forum Name: {{topic.forum_title}}
    &lt;/div&gt;
  </code></pre>
  
  <p>I want to filter by an array</p>
  
  <pre><code>  &lt;div ng-repeat="topic in topics | filter:{forum_id:ARRAY_HERE}"&gt;
      Forum ID: {{topic.forum_id}} Forum Name: {{topic.forum_title}}
    &lt;/div&gt;
  </code></pre>
  
  <p>Full plunk here:
  <a href="https://plnkr.co/edit/dCZ7DV?p=preview" rel="nofollow noreferrer">https://plnkr.co/edit/dCZ7DV?p=preview</a></p>