Menu Links Migrations

menu_links.inc

<?php
/**
 * @file
 * Define our migration classes.
 */

/**
 * Define a basic menu links base migration off a csv.
 */
class CustomMenuLinksMigration extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    // Human-friendly description of our migration process.
    $this->description = t('Inject Menu Links.');
    $this->dependencies = array();
    $path = drupal_get_path('module', 'custom_menu') . '/migrate/menu_links.csv';

    $columns = array(
      array('mlid', 'The source ID'),
      array('plid', 'The Parent ID, 0 if top level'),
      array('menu_name', 'Menu Name'),
      array('link_title', 'Link Title'),
      array('link_path', 'Link Path'),
      array('weight', 'Menu Weight'),
      array('hidden', 'Hidden'),
      array('external', 'External'),
      array('has_children', 'Has Children'),
      array('depth', 'Depth'),
      array('expanded', 'Expanded'),
    );

    $options = array();
    $options['header_rows'] = 1;
    $options['embedded_newlines'] = TRUE;

    $this->source = new MigrateSourceCSV($path, $columns, $options);

    $this->destination = new MigrateDestinationMenuLinks();

    // Set up simple mappings for migrate
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationMenuLinks::getKeySchema()
    );
    // Add Simple mappings.
    $simpleMappings = array();
    foreach($columns as $column) {
      $simpleMappings[] = $column[0];
    }
    $this->addSimpleMappings($simpleMappings);
    // Add Default Value
    $this->addFieldMapping('module')
     ->defaultValue('mlt_menu');
    $this->addUnmigratedDestinations($this->unmigratedDestinationFields());
  }
  
  /**
   * Define fields to not migrate.
   */
  public function unmigratedDestinationFields() {
    return array(
      'router_path',
      'options',
      'p1',
      'p2',
      'p3',
      'p4',
      'p5',
      'p6',
      'p7',
      'p8',
      'p9',
      'customized',
      'updated',
    );
  }
}