title: Laravel validation not required but still comes back as if it is required
body: <p>Having some slight issues with laravel validation rules. I.e. I have setup a form with a field name of 'url'. This url needs to be a URL but is not required.</p>
  
  <p>So I have:</p>
  
  <pre><code>'url' =&gt; 'url',
  </code></pre>
  
  <p>In the validation rules, but it still comes back on submit that the URL is an invalid format. But I didn't fill it out and it isn't required.</p>
  
  <p>Slightly confused here, anything I should look out for here?</p>