wordpress_category.inc in WordPress Migrate 7

Support for migrating categories from a WordPress blog into Drupal.

File

wordpress_category.inc

<?php

/**
 * @file
 *
 * Support for migrating categories from a WordPress blog into Drupal.
 */

/**
 * Implementation of MigrateSource, to handle migrating categories from WordPress XML dumps.
 */
class WordPressCategorySource extends WordPressSource {

  /**
   * List of available source fields.
   *
   * @var array
   */
  protected $fields = array(
    'category_nicename' => 'Unique "machine name" of the category',
    'category_parent' => 'Category parent (nicename?)',
    'cat_name' => 'User-friendly category name',
    'category_description' => 'Description of category',
  );

  /**
   * Simple initialization.
   */
  public function __construct($filename) {
    parent::__construct($filename);
    $this->xpath = '//channel/wp:category';
  }

  /**
   * Parse the values out of the wp:category element.
   *
   * @param SimpleXMLElement $item
   * @return boolean
   */
  protected function populateRow($item) {

    // All the stuff we want is in the wp namespace
    $namespaces = $item
      ->getNameSpaces(TRUE);
    $item_ns = $item
      ->children($namespaces['wp']);
    foreach ($item_ns as $name => $value) {
      $this->currentRow->{$name} = (string) $value;
    }
    $this->currentKey = array(
      $this->currentRow->category_nicename,
    );
    return TRUE;
  }

}

/**
 * Implementation of WordPressMigration, for categories
 */
class WordPressCategory extends WordPressMigration {

  /**
   * Set it up
   */
  public function __construct(array $arguments = array()) {
    parent::__construct($arguments);

    // The "nicename" is what we would call the machine name, the unique
    // identifier of a category.
    $this->map = new MigrateSQLMap($this->machineName, array(
      'category_nicename' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'description' => 'WordPress category machine name',
      ),
    ), MigrateDestinationTerm::getKeySchema());

    // Construct the source and destination objects.
    $this->source = new WordPressCategorySource($this->wxrFile);
    $this->destination = new MigrateDestinationTerm(variable_get('wordpress_migrate_category_vocabulary', ''));

    // The basic mappings
    $this
      ->addFieldMapping('name', 'cat_name');
    $this
      ->addFieldMapping('description', 'category_description');
    $this
      ->addFieldMapping('parent_name', 'category_parent')
      ->description('Untested. What if parent isn\'t migrated before child?');

    // Unmapped destination fields
    $this
      ->addFieldMapping('parent');
    $this
      ->addFieldMapping('format');
    $this
      ->addFieldMapping('weight');
    $this
      ->addFieldMapping('path');
  }

}

Classes

Name	Description
WordPressCategory	Implementation of WordPressMigration, for categories
WordPressCategorySource	Implementation of MigrateSource, to handle migrating categories from WordPress XML dumps.