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   1  <?php
   2  
   3  /**
   4   * @file
   5   * filefield_handler_field_data.inc
   6   *
   7   * Provides a handler for displaying values within the serialized data column.
   8   */
   9  class filefield_handler_field_data extends views_handler_field_node {
  10  
  11    function option_definition() {
  12      $options = parent::option_definition();
  13      $options['data_key'] = array('default' => 'description');
  14      return $options;
  15    }
  16  
  17    function options_form(&$form, &$form_state) {
  18      parent::options_form($form, $form_state);
  19  
  20      $options = array();
  21      $info = filefield_data_info();
  22      foreach ($info as $key => $data) {
  23        $options[$key] = $data['title'] . ' (' . $data['module'] .')';
  24      }
  25  
  26      $form['data_key'] = array(
  27        '#title' => t('Data key'),
  28        '#type' => 'radios',
  29        '#options' => $options,
  30        '#required' => TRUE,
  31        '#default_value' => $this->options['data_key'],
  32        '#description' => t('The data column may contain only a few or none any of these data options. The name of the module that provides the data is shown in parentheses.'),
  33        '#weight' => 4,
  34      );
  35    }
  36  
  37    function admin_summary() {
  38      // Display the data to be displayed.
  39      $info = filefield_data_info();
  40      return isset($info[$this->options['data_key']]['title']) ? $info[$this->options['data_key']]['title'] : $this->options['data_key'];
  41    }
  42  
  43    function render($values) {
  44      $values = drupal_clone($values); // Prevent affecting the original.
  45      $data = unserialize($values->{$this->field_alias});
  46      $values->{$this->field_alias} = filefield_data_value($this->options['data_key'], $data[$this->options['data_key']]);
  47  
  48      // Copied from views_handler_field_node(). We just remove the call to
  49      // sanitize_value() from the original call, becaue our value has already
  50      // been cleaned by filefield_data_value().
  51      return $this->render_link($values->{$this->field_alias}, $values);
  52    }
  53  
  54  }