title: html shows up as text
body: <p>I'm trying to render html in my Rails application, but the html shows as plain text.</p>
  
  <p>Here is my edit.erb file:</p>
  
  <pre><code>&lt;form action="/posts/update"&gt;
    &lt;input type="hidden" name="id" value="&lt;%= post.id %&gt;"/&gt;
    &lt;input type="text" name="post[title]" value="&lt;%= post.title %&gt;"/&gt;
    &lt;textarea rows="10" cols="30" name="post[body]" id=""&gt;&lt;%= post.body %&gt;&lt;/textarea&gt;
    &lt;button type="submit"&gt;Update&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/HWoGT.png" alt="enter image description here"></p>
  
  <p>I use RubyMine as IDE.</p>