rss_creator.module in RSS field formatters 7

Provides an RSS creator field formatter for text and user reference fields.

File

rss_creator.module

<?php

/**
 * @file
 * Provides an RSS creator field formatter for text and user reference fields.
 */

/**
 * Implements hook_field_formatter_info().
 */
function rss_creator_field_formatter_info() {
  return array(
    'rss_creator' => array(
      'label' => t('RSS creator'),
      'field types' => array(
        'text',
        'user_reference',
        'taxonomy_term_reference',
      ),
    ),
  );
}

/**
 * Implements hook_field_formatter_prepare_view().
 */
function rss_creator_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items, $displays) {
  if ($field['type'] == 'user_reference') {
    user_reference_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, $items, $displays);
  }
  elseif ($field['type'] == 'taxonomy_term_reference') {
    taxonomy_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, $items, $displays);
  }
}

/**
 * Implements hook_field_formatter_view().
 */
function rss_creator_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();

  // First item replaces dc:creator element added by core node module.
  if (isset($entity->rss_elements) && $items) {
    foreach ($entity->rss_elements as $key => $rss_element) {
      if ($rss_element['key'] == 'dc:creator') {
        $item = array_shift($items);
        $entity->rss_elements[$key]['value'] = rss_creator_element_value($item);
        break;
      }
    }
  }
  foreach ($items as $item) {
    $entity->rss_elements[] = array(
      'key' => 'dc:creator',
      'value' => rss_creator_element_value($item),
    );
  }
  return $element;
}

/**
 * Helper function to get element value from an item.
 */
function rss_creator_element_value($item) {
  if (isset($item['user'])) {
    return format_username($item['user']);
  }
  if (isset($item['taxonomy_term'])) {
    return $item['taxonomy_term']->name;
  }
  return $item['value'];
}

Functions

Name	Description
rss_creator_element_value	Helper function to get element value from an item.
rss_creator_field_formatter_info	Implements hook_field_formatter_info().
rss_creator_field_formatter_prepare_view	Implements hook_field_formatter_prepare_view().
rss_creator_field_formatter_view	Implements hook_field_formatter_view().