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WP_Customize_Nav_Menus::filter_wp_nav_menu( string $nav_menu_content, object $args )

Prepares wp_nav_menu() calls for partial refresh.

Description

Injects attributes into container element.

See also

Parameters

$nav_menu_content

(string) (Required) The HTML content for the navigation menu.

$args

(object) (Required) An object containing wp_nav_menu() arguments.

Return

(string) Nav menu HTML with selective refresh attributes added if partial can be refreshed.

Source

File: wp-includes/class-wp-customize-nav-menus.php 

public function filter_wp_nav_menu( $nav_menu_content, $args ) {
		if ( isset( $args->customize_preview_nav_menus_args['can_partial_refresh'] ) && $args->customize_preview_nav_menus_args['can_partial_refresh'] ) {
			$attributes       = sprintf( ' data-customize-partial-id="%s"', esc_attr( 'nav_menu_instance[' . $args->customize_preview_nav_menus_args['args_hmac'] . ']' ) );
			$attributes      .= ' data-customize-partial-type="nav_menu_instance"';
			$attributes      .= sprintf( ' data-customize-partial-placement-context="%s"', esc_attr( wp_json_encode( $args->customize_preview_nav_menus_args ) ) );
			$nav_menu_content = preg_replace( '#^(<\w+)#', '$1 ' . str_replace( '\\', '\\\\', $attributes ), $nav_menu_content, 1 );
		}
		return $nav_menu_content;
	}

Uses

Uses Description
wp-includes/functions.php: wp_json_encode()

Encode a variable into JSON, with some sanity checks.
wp-includes/formatting.php: esc_attr()

Escaping for HTML attributes.

Changelog

Version Description
4.3.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_customize_nav_menus/filter_wp_nav_menu