title: How to add data-attribute to the form tag in simple_form?
body: <p>I'm using garlic.js to validate my forms. Garlic.js recommends adding a <strong>data-attribute</strong> on the <strong>form tag</strong>.</p>
  
  <p>Here's what I need to generate:</p>
  
  <pre><code>&lt;form data-validate="parsley"&gt;
  </code></pre>
  
  <p>I'm having issues to generate this data attribute on the form tag. I tried everything and nothing worked. Anyone has a solution to this?</p>