title: Display post link if article object is not null?
body: <p>How do I display a link to the article path if the article object is not null?</p>
  
  <p>so something like:</p>
  
  <pre><code>&lt;% if @article is not null %&gt;
  &lt;a href="&lt;%%= article_path @article &gt;"&gt;link&lt;/a&gt;
  </code></pre>