laipower/wp-content/plugins/menu-icons/vendor/codeinwp/menu-item-custom-fields/doc/menu-item-custom-fields-example.php
2020-04-07 13:03:04 +00:00

139 lines
3.5 KiB
PHP

<?php
/**
* Menu item custom fields example
*
* Copy this file into your wp-content/mu-plugins directory.
*
* @package Menu_Item_Custom_Fields_Example
* @version 0.2.0
* @author Dzikri Aziz <kvcrvt@gmail.com>
*
*
* Plugin name: Menu Item Custom Fields Example
* Plugin URI: https://github.com/kucrut/wp-menu-item-custom-fields
* Description: Example usage of Menu Item Custom Fields in plugins/themes
* Version: 0.2.0
* Author: Dzikri Aziz
* Author URI: http://kucrut.org/
* License: GPL v2
* Text Domain: menu-item-custom-fields-example
*/
/**
* Sample menu item metadata
*
* This class demonstrate the usage of Menu Item Custom Fields in plugins/themes.
*
* @since 0.1.0
*/
class Menu_Item_Custom_Fields_Example {
/**
* Holds our custom fields
*
* @var array
* @access protected
* @since Menu_Item_Custom_Fields_Example 0.2.0
*/
protected static $fields = array();
/**
* Initialize plugin
*/
public static function init() {
add_action( 'wp_nav_menu_item_custom_fields', array( __CLASS__, '_fields' ), 10, 4 );
add_action( 'wp_update_nav_menu_item', array( __CLASS__, '_save' ), 10, 3 );
add_filter( 'manage_nav-menus_columns', array( __CLASS__, '_columns' ), 99 );
self::$fields = array(
'field-01' => __( 'Custom Field #1', 'menu-item-custom-fields-example' ),
'field-02' => __( 'Custom Field #2', 'menu-item-custom-fields-example' ),
);
}
/**
* Save custom field value
*
* @wp_hook action wp_update_nav_menu_item
*
* @param int $menu_id Nav menu ID
* @param int $menu_item_db_id Menu item ID
* @param array $menu_item_args Menu item data
*/
public static function _save( $menu_id, $menu_item_db_id, $menu_item_args ) {
if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
return;
}
check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );
foreach ( self::$fields as $_key => $label ) {
$key = sprintf( 'menu-item-%s', $_key );
// Sanitize
if ( ! empty( $_POST[ $key ][ $menu_item_db_id ] ) ) {
// Do some checks here...
$value = $_POST[ $key ][ $menu_item_db_id ];
} else {
$value = null;
}
// Update
if ( ! is_null( $value ) ) {
update_post_meta( $menu_item_db_id, $key, $value );
} else {
delete_post_meta( $menu_item_db_id, $key );
}
}
}
/**
* Print field
*
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args Menu item args.
* @param int $id Nav menu ID.
*
* @return string Form fields
*/
public static function _fields( $id, $item, $depth, $args ) {
foreach ( self::$fields as $_key => $label ) :
$key = sprintf( 'menu-item-%s', $_key );
$id = sprintf( 'edit-%s-%s', $key, $item->ID );
$name = sprintf( '%s[%s]', $key, $item->ID );
$value = get_post_meta( $item->ID, $key, true );
$class = sprintf( 'field-%s', $_key );
?>
<p class="description description-wide <?php echo esc_attr( $class ) ?>">
<?php printf(
'<label for="%1$s">%2$s<br /><input type="text" id="%1$s" class="widefat %1$s" name="%3$s" value="%4$s" /></label>',
esc_attr( $id ),
esc_html( $label ),
esc_attr( $name ),
esc_attr( $value )
) ?>
</p>
<?php
endforeach;
}
/**
* Add our fields to the screen options toggle
*
* @param array $columns Menu item columns
* @return array
*/
public static function _columns( $columns ) {
$columns = array_merge( $columns, self::$fields );
return $columns;
}
}
Menu_Item_Custom_Fields_Example::init();