_wp_ajax_add_hierarchical_term

Source code

function _wp_ajax_add_hierarchical_term() {

	$action = $_POST['action'];

	$taxonomy = get_taxonomy(substr($action, 4));

	check_ajax_referer( $action, '_ajax_nonce-add-' . $taxonomy->name );

	if ( !current_user_can( $taxonomy->cap->edit_terms ) )

		die('-1');

	$names = explode(',', $_POST['new'.$taxonomy->name]);

	$parent = isset($_POST['new'.$taxonomy->name.'_parent']) ? (int) $_POST['new'.$taxonomy->name.'_parent'] : 0;

	if ( 0 > $parent )

		$parent = 0;

	if ( $taxonomy->name == 'category' )

		$post_category = isset($_POST['post_category']) ? (array) $_POST['post_category'] : array();

	else

		$post_category = ( isset($_POST['tax_input']) && isset($_POST['tax_input'][$taxonomy->name]) ) ? (array) $_POST['tax_input'][$taxonomy->name] : array();

	$checked_categories = array_map( 'absint', (array) $post_category );

	$popular_ids = wp_popular_terms_checklist($taxonomy->name, 0, 10, false);



	foreach ( $names as $cat_name ) {

		$cat_name = trim($cat_name);

		$category_nicename = sanitize_title($cat_name);

		if ( '' === $category_nicename )

			continue;

		if ( !($cat_id = term_exists($cat_name, $taxonomy->name, $parent)) ) {

			$new_term = wp_insert_term($cat_name, $taxonomy->name, array('parent' => $parent));

			$cat_id = $new_term['term_id'];

		}

		$checked_categories[] = $cat_id;

		if ( $parent ) // Do these all at once in a second

			continue;

		$category = get_term( $cat_id, $taxonomy->name );

		ob_start();

			wp_terms_checklist( 0, array( 'taxonomy' => $taxonomy->name, 'descendants_and_self' => $cat_id, 'selected_cats' => $checked_categories, 'popular_cats' => $popular_ids ));

		$data = ob_get_contents();

		ob_end_clean();

		$add = array(

			'what' => $taxonomy->name,

			'id' => $cat_id,

			'data' => str_replace( array("\n", "\t"), '', $data),

			'position' => -1

		);

	}



	if ( $parent ) { // Foncy - replace the parent and all its children

		$parent = get_term( $parent, $taxonomy->name );

		$term_id = $parent->term_id;



		while ( $parent->parent ) { // get the top parent

			$parent = &get_term( $parent->parent, $taxonomy->name );

			if ( is_wp_error( $parent ) )

				break;

			$term_id = $parent->term_id;

		}



		ob_start();

			wp_terms_checklist( 0, array('taxonomy' => $taxonomy->name, 'descendants_and_self' => $term_id, 'selected_cats' => $checked_categories, 'popular_cats' => $popular_ids));

		$data = ob_get_contents();

		ob_end_clean();

		$add = array(

			'what' => $taxonomy->name,

			'id' => $term_id,

			'data' => str_replace( array("\n", "\t"), '', $data),

			'position' => -1

		);

	}



	ob_start();

		wp_dropdown_categories( array(

			'taxonomy' => $taxonomy->name, 'hide_empty' => 0, 'name' => 'new'.$taxonomy->name.'_parent', 'orderby' => 'name',

			'hierarchical' => 1, 'show_option_none' => '— '.$taxonomy->labels->parent_item.' —'

		) );

	$sup = ob_get_contents();

	ob_end_clean();

	$add['supplemental'] = array( 'newcat_parent' => $sup );



	$x = new WP_Ajax_Response( $add );

	$x->send();

}