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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 784 | |
| 785 | if ( ! isset( $menu_item->description ) ) { |
| 786 | /** |
| 787 | * Filters a navigation menu item's description. |
| 788 | * |
| 789 | * @since 3.0.0 |
| 790 | * |
| 791 | * @param string $description The menu item description. |
| 792 | */ |
| 793 | $menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) ); |
| 794 | } |
| 795 | |
| 796 | $menu_item->classes = ! isset( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes; |
| 797 | $menu_item->xfn = ! isset( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn; |
| 798 | } else { |
| 799 | $menu_item->db_id = 0; |
| 800 | $menu_item->menu_item_parent = 0; |
| 801 | $menu_item->object_id = (int) $menu_item->ID; |
| 802 | $menu_item->type = 'post_type'; |
| Line | Code |
| 812 | |
| 813 | $menu_item->title = $menu_item->post_title; |
| 814 | $menu_item->url = get_permalink( $menu_item->ID ); |
| 815 | $menu_item->target = ''; |
| 816 | |
| 817 | /** This filter is documented in wp-includes/nav-menu.php */ |
| 818 | $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' ); |
| 819 | |
| 820 | /** This filter is documented in wp-includes/nav-menu.php */ |
| 821 | $menu_item->description = apply_filters( 'nav_menu_description', '' ); |
| 822 | $menu_item->classes = array(); |
| 823 | $menu_item->xfn = ''; |
| 824 | } |
| 825 | } elseif ( isset( $menu_item->taxonomy ) ) { |
| 826 | $menu_item->ID = $menu_item->term_id; |
| 827 | $menu_item->db_id = 0; |
| 828 | $menu_item->menu_item_parent = 0; |
| 829 | $menu_item->object_id = (int) $menu_item->term_id; |
| 830 | $menu_item->post_parent = (int) $menu_item->parent; |