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- <?php
- /**
- * @file
- * Provides info about book nodes.
- */
- /**
- * Implements hook_entity_property_info_alter() on top of book module.
- *
- * @see entity_entity_property_info_alter()
- */
- function entity_metadata_book_entity_property_info_alter(&$info) {
- // Add meta-data about the added node properties.
- $properties = &$info['node']['properties'];
- $properties['book'] = array(
- 'label' => t("Book"),
- 'type' => 'node',
- 'description' => t("If part of a book, the book to which this book page belongs."),
- 'getter callback' => 'entity_metadata_book_get_properties',
- );
- $properties['book_ancestors'] = array(
- 'label' => t("Book ancestors"),
- 'type' => 'list<node>',
- 'computed' => TRUE,
- 'description' => t("If part of a book, a list of all book pages upwards in the book hierarchy."),
- 'getter callback' => 'entity_metadata_book_get_properties',
- );
- }
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