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function is not described

Custom_Background::ajax_background_add() public WP 4.1.0

Ajax handler for adding custom background context to an attachment.

Triggers when the user adds a new background image from the Media Manager.

{} It's a method of the class: Custom_Background{}

No Hooks.

Return

null. Nothing.

Usage

$Custom_Background = new Custom_Background();
$Custom_Background->ajax_background_add();

Changelog

Since 4.1.0 Introduced.

Code of Custom_Background::ajax_background_add() WP 5.8.2

public function ajax_background_add() {
	check_ajax_referer( 'background-add', 'nonce' );

	if ( ! current_user_can( 'edit_theme_options' ) ) {
		wp_send_json_error();
	}

	$attachment_id = absint( $_POST['attachment_id'] );
	if ( $attachment_id < 1 ) {
		wp_send_json_error();
	}

	update_post_meta( $attachment_id, '_wp_attachment_is_custom_background', get_stylesheet() );

	wp_send_json_success();
}