Drupal Views field handler: how to unserialize an additional field data?
The views data can be altered in the handler's render() method.

  function render($values) {
    $values-&gt;commerce_line_item_data = unserialize($values-&gt;commerce_line_item_data);
    return '&lt;!--form-item-' . $this-&gt;options['id'] . '--' . $this-&gt;view-&gt;row_index . '--&gt;';
  }