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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 |
---|---|
774 | $menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target; |
775 |
|
776 | /** |
777 | * Filters a navigation menu item's title attribute. |
778 | * |
779 | * @since 3.0.0 |
780 | * |
781 | * @param string $item_title The menu item title attribute. |
782 | */ |
783 | $menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title; |
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 | */ |
Line | Code |
809 | /* translators: %d: ID of a post */ |
810 | $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID ); |
811 | } |
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; |