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Drupal example source code file (filefield_meta_handler_field_tags.inc)

This example Drupal source code file (filefield_meta_handler_field_tags.inc) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, check_plain, default, form, function, if, options, php, required, return, tag, true, value, values

The filefield_meta_handler_field_tags.inc Drupal example source code

// $Id: filefield_meta_handler_field_tags.inc,v 1.1 2010/06/16 22:06:44 quicksketch Exp $

 * @file
 * A special handler that renders ID3 tags attached to a file.

 * Render a field as a readable value in hours, minutes, and seconds.
 * @ingroup views_field_handlers
class filefield_meta_handler_field_tags extends views_handler_field {
  function option_definition() {
    $options = parent::option_definition();
    $default = reset(array_keys(filefield_meta_tags()));
    $options['tag'] = array('tag' => $default, 'required' => TRUE, 'translatable' => TRUE);
    return $options;

  function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);

    $form['relationship']['#weight'] = -2;
    $form['tag'] = array(
      '#type' => 'select',
      '#title' => t('ID3 tag'),
      '#required' => TRUE,
      '#default_value' => $this->options['tag'],
      '#options' => filefield_meta_tags(),
      '#description' => t('Select the tag to be rendered. If needing multiple tags, add another ID3 tags field.'),
      '#weight' => -1,

  function render($values) {
    $value = unserialize($values->{$this->field_alias});
    $tag = $this->options['tag'];
    if (isset($value[$tag])) {
      return check_plain($value[$tag]);

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