Club Drupal

<?php

/**

 * @file

 * Stub file for bootstrap_file_widget().

 */

/**

 * Returns HTML for an individual file upload widget.

 *

 * @param array $variables

 *   An associative array containing:

 *   - element: A render element representing the widget.

 *

 * @return string

 *   The constructed HTML.

 *

 * @see theme_file_widget()

 *

 * @ingroup theme_functions

 */

function bootstrap_file_widget($variables) {

  $output = '';

  $element = $variables['element'];

  $element['upload_button']['#attributes']['class'][] = 'btn-primary';

  $element['upload_button']['#prefix'] = '<span class="input-group-btn">';

  $element['upload_button']['#suffix'] = '</span>';

  // The "form-managed-file" class is required for proper Ajax functionality.

  if (!empty($element['filename'])) {

    $output .= '<div class="file-widget form-managed-file clearfix">';

    // Add the file size after the file name.

    $element['filename']['#markup'] .= ' <span class="file-size badge">' . format_size($element['#file']->filesize) . '</span>';

  }

  else {

    $output .= '<div class="file-widget form-managed-file clearfix input-group">';

  }

  // Immediately render hidden elements before the rest of the output.

  // The uploadprogress extension requires that the hidden identifier input

  // element appears before the file input element. They must also be siblings

  // inside the same parent element.

  // @see https://www.drupal.org/node/2155419

  foreach (element_children($element) as $child) {

    if (isset($element[$child]['#type']) && $element[$child]['#type'] === 'hidden') {

      $output .= drupal_render($element[$child]);

    }

  }

  // Render the rest of the element.

  $output .= drupal_render_children($element);

  $output .= '</div>';

  return $output;

}