title: WP API Filter By Post Schema
body: <p>Is it possible to return a list of posts based from the Wordpress Rest API v2 based on their schema:</p>
  
  <p>For List of Schemas:
  <a href="http://v2.wp-api.org/reference/posts/" rel="nofollow">http://v2.wp-api.org/reference/posts/</a></p>
  
  <p>I want to filter by sticky field, but the same would go for the rest of the fields.</p>
  
  <p>So far I have:</p>
  
  <pre><code>/wp-json/wp/v2/posts?filter[sticky]=true
  /wp-json/wp/v2/posts?filter[sticky]=1
  </code></pre>
  
  <p>Both return the same response as the standard endpoint:</p>
  
  <pre><code>/wp-json/wp/v2/posts
  </code></pre>
  
  <p>I have read other material such detailing how to sort by <a href="http://torquemag.io/2014/09/working-meta-data-using-json-rest-api/" rel="nofollow">meta</a> or custom <a href="http://torquemag.io/2014/10/working-taxonomies-using-json-rest-api/" rel="nofollow">taxonomies</a> but I don't believe that's the same as this.</p>