book.install

<?php


/**
 * @file
 * Install, update and uninstall functions for the book module.
 */

/**
 * Implements hook_install().
 */
function book_install() {
    // Add the node type.
    _book_install_type_create();
}

/**
 * Implements hook_uninstall().
 */
function book_uninstall() {
    variable_del('book_allowed_types');
    variable_del('book_child_type');
    variable_del('book_block_mode');
    // Delete menu links.
    db_delete('menu_links')->condition('module', 'book')
        ->execute();
    menu_cache_clear_all();
}

/**
 * Creates the book content type.
 */
function _book_install_type_create() {
    // Create an additional node type.
    $book_node_type = array(
        'type' => 'book',
        'name' => t('Book page'),
        'base' => 'node_content',
        'description' => t('<em>Books</em> have a built-in hierarchical navigation. Use for handbooks or tutorials.'),
        'custom' => 1,
        'modified' => 1,
        'locked' => 0,
    );
    $book_node_type = node_type_set_defaults($book_node_type);
    node_type_save($book_node_type);
    node_add_body_field($book_node_type);
    // Default to not promoted.
    variable_set('node_options_book', array(
        'status',
    ));
    // Use this default type for adding content to books.
    variable_set('book_allowed_types', array(
        'book',
    ));
    variable_set('book_child_type', 'book');
}

/**
 * Implements hook_schema().
 */
function book_schema() {
    $schema['book'] = array(
        'description' => 'Stores book outline information. Uniquely connects each node in the outline to a link in {menu_links}',
        'fields' => array(
            'mlid' => array(
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => "The book page's {menu_links}.mlid.",
            ),
            'nid' => array(
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => "The book page's {node}.nid.",
            ),
            'bid' => array(
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
                'description' => "The book ID is the {book}.nid of the top-level page.",
            ),
        ),
        'primary key' => array(
            'mlid',
        ),
        'unique keys' => array(
            'nid' => array(
                'nid',
            ),
        ),
        'indexes' => array(
            'bid' => array(
                'bid',
            ),
        ),
    );
    return $schema;
}