I'm having a time migrating images from Wordpress to Drupal with the Migrate 2.4 module. Here are my mappings:
$this->addFieldMapping('field_image','images');
$this->addFieldMapping('destination_file', 'images');
$this->addFieldMapping('field_image:source_dir')
->defaultValue('/Users/grafa/htdocs/wordpress/wp-content/uploads');
$this->addFieldMapping('field_image:file_class')
->defaultValue('MigrateFileUri');
The images come from a function that queries the wp_postmeta table then returns the result to the prepareRow() function.
function getImages($row) {
$post_id = $row->id;
$results = db_query("
SELECT pm.post_id, pm.meta_key, pm.meta_value FROM streetroots_wp.wp_postmeta AS pm LEFT JOIN streetroots_wp.wp_posts AS p ON pm.post_id=p.id WHERE p.post_parent = $post_id AND pm.meta_key='_wp_attached_file';");
$images = array();
foreach($results as $result) {
$images[] = $result->meta_value;
}
return !empty($images) ? $images : NULL;
}
This basically returns the image name and relative path from the wp_postmeta table something like '2012/05/figure1.jpg'. I then use prepareRow() like this:
function prepareRow($row) {
$row->images = $this->getImages($row);
}