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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 |
---|---|
868 | $menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target; |
869 |
|
870 | /** |
871 | * Filters a navigation menu item's title attribute. |
872 | * |
873 | * @since 3.0.0 |
874 | * |
875 | * @param string $item_title The menu item title attribute. |
876 | */ |
877 | $menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title; |
878 |
|
879 | if ( ! isset( $menu_item->description ) ) { |
880 | /** |
881 | * Filters a navigation menu item's description. |
882 | * |
883 | * @since 3.0.0 |
884 | * |
885 | * @param string $description The menu item description. |
886 | */ |
Line | Code |
903 | /* translators: %d: ID of a post */ |
904 | $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID ); |
905 | } |
906 |
|
907 | $menu_item->title = $menu_item->post_title; |
908 | $menu_item->url = get_permalink( $menu_item->ID ); |
909 | $menu_item->target = ''; |
910 |
|
911 | /** This filter is documented in wp-includes/nav-menu.php */ |
912 | $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' ); |
913 |
|
914 | /** This filter is documented in wp-includes/nav-menu.php */ |
915 | $menu_item->description = apply_filters( 'nav_menu_description', '' ); |
916 | $menu_item->classes = array(); |
917 | $menu_item->xfn = ''; |
918 | } |
919 | } elseif ( isset( $menu_item->taxonomy ) ) { |
920 | $menu_item->ID = $menu_item->term_id; |
921 | $menu_item->db_id = 0; |