title: WTForms - POSTing text fields to an array
body: <p>In regular HTML, you can have multiple fields POST to an array:</p>
  
  <pre><code>&lt;input type="text" name="arr[]"&gt;
  &lt;input type="text" name="arr[]"&gt;
  &lt;input type="text" name="arr[]"&gt;
  &lt;input type="text" name="arr[]"&gt;
  </code></pre>
  
  <p>How can I get this functionality from WTForms? Basically, I have a form where users and click on little plus and minus buttons to add or remove fields from the form.</p>