Walker_Nav_Menu::start_el()
最后更新于：2021-11-26 06:37:18
Walker_Nav_Menu::start_el( string$output, GC_Post$item, int$depth, stdClass$args=null, int$id)Starts the element output.
参数
- $output
-
(string) (Required) Used to append additional content (passed by reference).
- $item
-
(GC_Post) (Required) Menu item data object.
- $depth
-
(int) (Required) Depth of menu item. Used for padding.
- $args
-
(stdClass) (Optional) An object of gc_nav_menu() arguments.
Default value: null
- $id
-
(int) (Required) Current item ID.
源文件
文件: gc-includes/class-walker-nav-menu.php
public function start_el( &$output, $item, $depth = 0, $args = null, $id = 0 ) {
if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) {
$t = '';
$n = '';
} else {
$t = "t";
$n = "n";
}
$indent = ( $depth ) ? str_repeat( $t, $depth ) : '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
/**
* Filters the arguments for a single nav menu item.
*
* @since 4.4.0
*
* @param stdClass $args An object of gc_nav_menu() arguments.
* @param GC_Post $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
*/
$args = apply_filters( 'nav_menu_item_args', $args, $item, $depth );
/**
* Filters the CSS classes applied to a menu item's list item element.
*
* @since 3.0.0
* @since 4.1.0 The `$depth` parameter was added.
*
* @param string[] $classes Array of the CSS classes that are applied to the menu item's `<li>` element.
* @param GC_Post $item The current menu item.
* @param stdClass $args An object of gc_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$class_names = implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args, $depth ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
/**
* Filters the ID applied to a menu item's list item element.
*
* @since 3.0.1
* @since 4.1.0 The `$depth` parameter was added.
*
* @param string $menu_id The ID that is applied to the menu item's `<li>` element.
* @param GC_Post $item The current menu item.
* @param stdClass $args An object of gc_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$id = apply_filters( 'nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args, $depth );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $class_names . '>';
$atts = array();
$atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : '';
$atts['target'] = ! empty( $item->target ) ? $item->target : '';
if ( '_blank' === $item->target && empty( $item->xfn ) ) {
$atts['rel'] = 'noopener';
} else {
$atts['rel'] = $item->xfn;
}
$atts['href'] = ! empty( $item->url ) ? $item->url : '';
$atts['aria-current'] = $item->current ? 'page' : '';
/**
* Filters the HTML attributes applied to a menu item's anchor element.
*
* @since 3.6.0
* @since 4.1.0 The `$depth` parameter was added.
*
* @param array $atts {
* The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
*
* @type string $title Title attribute.
* @type string $target Target attribute.
* @type string $rel The rel attribute.
* @type string $href The href attribute.
* @type string $aria-current The aria-current attribute.
* }
* @param GC_Post $item The current menu item.
* @param stdClass $args An object of gc_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( is_scalar( $value ) && '' !== $value && false !== $value ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
/** This filter is documented in gc-includes/post-template.php */
$title = apply_filters( 'the_title', $item->title, $item->ID );
/**
* Filters a menu item's title.
*
* @since 4.4.0
*
* @param string $title The menu item's title.
* @param GC_Post $item The current menu item.
* @param stdClass $args An object of gc_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );
$item_output = $args->before;
$item_output .= '<a' . $attributes . '>';
$item_output .= $args->link_before . $title . $args->link_after;
$item_output .= '</a>';
$item_output .= $args->after;
/**
* Filters a menu item's starting output.
*
* The menu item's starting output only includes `$args->before`, the opening `<a>`,
* the menu item's title, the closing `</a>`, and `$args->after`. Currently, there is
* no filter for modifying the opening and closing `<li>` for a menu item.
*
* @since 3.0.0
*
* @param string $item_output The menu item's starting HTML output.
* @param GC_Post $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param stdClass $args An object of gc_nav_menu() arguments.
*/
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
object(GC_Post)#497 (40) {
["ID"]=>
int(160)
["post_author"]=>
string(1) "1"
["post_date"]=>
string(19) "2016-03-26 17:59:07"
["post_date_gmt"]=>
string(19) "2016-03-26 17:59:07"
["post_content"]=>
string(15) "Home Sweet Home"
["post_title"]=>
string(4) "Home"
["post_excerpt"]=>
string(0) ""
["post_status"]=>
string(7) "publish"
["comment_status"]=>
string(6) "closed"
["ping_status"]=>
string(6) "closed"
["post_password"]=>
string(0) ""
["post_name"]=>
string(4) "home"
["to_ping"]=>
string(0) ""
["pinged"]=>
string(0) ""
["post_modified"]=>
string(19) "2016-08-31 23:53:19"
["post_modified_gmt"]=>
string(19) "2016-08-31 21:53:19"
["post_content_filtered"]=>
string(0) ""
["post_parent"]=>
int(0)
["guid"]=>
string(33) "http://localhost/gechiui/?p=160"
["menu_order"]=>
int(1)
["post_type"]=>
string(13) "nav_menu_item"
["post_mime_type"]=>
string(0) ""
["comment_count"]=>
string(1) "0"
["filter"]=>
string(3) "raw"
["db_id"]=>
int(160)
["menu_item_parent"]=>
string(1) "0"
["object_id"]=>
string(3) "160"
["object"]=>
string(6) "custom"
["type"]=>
string(6) "custom"
["type_label"]=>
string(11) "Custom Link"
["title"]=>
string(4) "Home"
["url"]=>
string(27) "http://localhost/gechiui/"
["target"]=>
string(0) ""
["attr_title"]=>
string(0) ""
["description"]=>
string(15) "Home Sweet Home"
["classes"]=>
array(7) {
[0]=>
string(0) ""
[1]=>
string(9) "menu-item"
[2]=>
string(21) "menu-item-type-custom"
[3]=>
string(23) "menu-item-object-custom"
[4]=>
string(17) "current-menu-item"
[5]=>
string(17) "current_page_item"
[6]=>
string(14) "menu-item-home"
}
["xfn"]=>
string(0) ""
["current"]=>
bool(true)
["current_item_ancestor"]=>
bool(false)
["current_item_parent"]=>
bool(false)
}
object(stdClass)#486 (16) {
["menu"]=>
object(GC_Term)#489 (10) {
["term_id"]=>
int(6)
["name"]=>
string(12) "Primary Menu"
["slug"]=>
string(12) "primary-menu"
["term_group"]=>
int(0)
["term_taxonomy_id"]=>
int(6)
["taxonomy"]=>
string(8) "nav_menu"
["description"]=>
string(0) ""
["parent"]=>
int(0)
["count"]=>
int(7)
["filter"]=>
string(3) "raw"
}
["container"]=>
string(3) "div"
["container_class"]=>
string(0) ""
["container_id"]=>
string(0) ""
["menu_class"]=>
string(12) "primary-menu"
["menu_id"]=>
string(0) ""
["echo"]=>
bool(true)
["fallback_cb"]=>
string(12) "gc_page_menu"
["before"]=>
string(0) ""
["after"]=>
string(0) ""
["link_before"]=>
string(0) ""
["link_after"]=>
string(0) ""
["items_wrap"]=>
string(36) "<ul>%3$s</ul>"
["depth"]=>
int(0)
["walker"]=>
object(IBenic_Walker)#484 (4) {
["tree_type"]=>
array(3) {
[0]=>
string(9) "post_type"
[1]=>
string(8) "taxonomy"
[2]=>
string(6) "custom"
}
["db_fields"]=>
array(2) {
["parent"]=>
string(16) "menu_item_parent"
["id"]=>
string(5) "db_id"
}
["max_pages"]=>
int(1)
["has_children"]=>
bool(false)
}
["theme_location"]=>
string(7) "primary"
}