public function MigrateExampleMediaNodeMigration::__construct in Migrate Extras 7.2

General initialization of a Migration object.

Overrides Migration::__construct

File

migrate_extras_examples/migrate_extras_media/migrate_extras_media.migrate.inc, line 130

Examples and test fodder for migration of Media entities and fields.

Class

MigrateExampleMediaNodeMigration

Migration class for nodes with media fields.

Code

public function __construct() {
  parent::__construct();
  $this->description = t('Example migration into the Media module');
  $this->dependencies = array(
    'MigrateExampleMediaImage',
    'MigrateExampleMediaVideo',
  );
  $this->map = new MigrateSQLMap($this->machineName, array(
    'id' => array(
      'type' => 'int',
      'unsigned' => TRUE,
      'not null' => TRUE,
      'description' => 'Media ID',
    ),
  ), MigrateDestinationNode::getKeySchema());

  // Source fields available in the XML file.
  $fields = array(
    'id' => t('Source id'),
    'title' => t('Title'),
    'body' => t('Description'),
    'video_uri' => t('A YouTube URI'),
    'video_description' => t('Description for a YouTube video'),
    'image_filename' => t('Image filename'),
    'image_description' => t('Image description'),
    'document_filename' => t('Document filename'),
  );

  // Our test data is in an XML file
  $xml_folder = drupal_get_path('module', 'migrate_extras_media');
  $items_url = $xml_folder . '/migrate_extras_media.xml';
  $item_xpath = '/source_data/item';
  $item_ID_xpath = 'id';
  $items_class = new MigrateItemsXML($items_url, $item_xpath, $item_ID_xpath);
  $this->source = new MigrateSourceMultiItems($items_class, $fields);
  $this->destination = new MigrateDestinationNode('migrate_extras_media_example');

  // Basic fields
  $this
    ->addFieldMapping('title', 'title')
    ->xpath('title');
  $this
    ->addFieldMapping('uid')
    ->defaultValue(1);
  $this
    ->addFieldMapping('body', 'body')
    ->xpath('body');
  $this
    ->addFieldMapping('body:format')
    ->defaultValue('filtered_html');

  // The image and Youtube media entities are imported via their own
  // migrations above, we just need to link the fields to them. We do this
  // by mapping the primary keys of those migrations (URL and filename) to
  // the primary field values, and specifying a file_class of MigrateFileFid.
  $this
    ->addFieldMapping('field_youtube_video', 'video_uri')
    ->xpath('video/uri')
    ->sourceMigration('MigrateExampleMediaVideo');
  $this
    ->addFieldMapping('field_youtube_video:file_class')
    ->defaultValue('MigrateFileFid');
  $this
    ->addFieldMapping('field_media_image', 'image_filename')
    ->xpath('image/filename')
    ->sourceMigration('MigrateExampleMediaImage');
  $this
    ->addFieldMapping('field_media_image:file_class')
    ->defaultValue('MigrateFileFid');

  // We have not created a separate migration for documents, we're using the
  // file field handler to get those. This works just like it does for regular
  // file fields.
  $this
    ->addFieldMapping('field_document', 'document_filename')
    ->xpath('document/filename');

  // This isn't technically necessary - MigrateFileUri is the default
  $this
    ->addFieldMapping('field_document:file_class')
    ->defaultValue('MigrateFileUri');
  $this
    ->addFieldMapping('field_document:source_dir')
    ->defaultValue(drupal_get_path('module', 'migrate_extras_media') . '/source_files');
  $this
    ->addFieldMapping('field_document:destination_file', 'document_filename')
    ->xpath('document/filename');

  // Unmapped destination fields
  $this
    ->addUnmigratedDestinations(array(
    'is_new',
    'status',
    'promote',
    'revision',
    'language',
    'sticky',
    'created',
    'changed',
    'revision_uid',
    'log',
    'tnid',
    'body:summary',
    'body:language',
    'comment',
  ));
  $this
    ->addUnmigratedDestinations(array(
    'field_media_image:language',
    'field_media_image:display',
    'field_media_image:description',
    'field_youtube_video:language',
    'field_youtube_video:description',
    'field_youtube_video:display',
    'field_document:language',
    'field_document:destination_dir',
    'field_document:file_replace',
    'field_document:preserve_files',
    'field_document:description',
    'field_document:display',
  ));
  if (module_exists('path')) {
    $this
      ->addUnmigratedDestinations(array(
      'path',
    ));
    if (module_exists('pathauto')) {
      $this
        ->addUnmigratedDestinations(array(
        'pathauto',
      ));
    }
  }
  $this
    ->addUnmigratedSources(array(
    'image_description',
    'video_description',
  ));
}