title: using | filter in ng-options in angular js
body: <p>I'm pretty new to angular.
  I want to have a where clause in my ng-options  like this :</p>
  
  <pre><code>select * from currencies where  currency.code in ( 'usd' , 'cad')
  
  &lt;select ng-model="selectedCurrency" ng-options="currency.Name for currency in Currencies | filter:currency.code = 'usd' track by currency.ID"&gt;
      &lt;option value=""&gt;-- select a currency--&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I could do it for only one code but I want to select it from an array of two or more !</p>