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<?php
/**
* Sample menu item metadata
*
* This class demonstrate the usage of Menu Item Custom Fields in plugins/themes.
*
* @since 0.1.0
*/
class Hoteller_Menu_Item_Custom_Fields {
/**
* 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(
'megamenu' => __( 'Elementor Mega Menu (optional)', 'hoteller-elementor' ),
);
}
/**
* 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 ) {
//Get all megamenus posts
$args = array(
'post_type' => 'megamenu',
'post_status' => array( 'publish' ),
'numberposts' => -1,
'orderby' => 'title',
'order' => 'ASC',
'suppress_filters' => false
);
$megamenus = get_posts($args);
$megamenus_select = array();
$megamenus_select[''] = '';
if(!empty($megamenus))
{
foreach ($megamenus as $megamenu)
{
$megamenus_select[$megamenu->ID] = $megamenu->post_title;
}
}
else
{
$megamenus_select[''] = __( 'No mega menu found. Please create one first', 'hoteller-elementor' );
}
foreach ( self::$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( $class ) ?>">
<label for="<?php echo esc_attr($id); ?>">
<?php echo esc_html($label); ?>
<select id="<?php echo esc_attr($id); ?>" name="<?php echo esc_attr($name); ?>">
<?php
foreach ($megamenus_select as $megamenu_id => $megamenu)
{
?>
<option value="<?php echo esc_attr($megamenu_id); ?>" <?php if($megamenu_id == $value) { ?>selected<?php } ?>><?php echo esc_html($megamenu); ?></option>
<?php
}
?>
</select>
<label>
</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;
}
}
Hoteller_Menu_Item_Custom_Fields::init();