WP_Customize_Nav_Menus::render_menu()

Source

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

}
		if ( ! isset( $postarr['meta_input'] ) ) {
			$postarr['meta_input'] = array();
		}
		$postarr['meta_input']['_customize_draft_post_name'] = $postarr['post_name'];
		$postarr['meta_input']['_customize_changeset_uuid']  = $this->manager->changeset_uuid();
		unset( $postarr['post_name'] );

		add_filter( 'wp_insert_post_empty_content', '__return_false', 1000 );
		$r = wp_insert_post( wp_slash( $postarr ), true );
		remove_filter( 'wp_insert_post_empty_content', '__return_false', 1000 );

		if ( is_wp_error( $r ) ) {
			return $r;
		} else {
			return get_post( $r );
		}
	}

	/**
	 * Ajax handler for adding a new auto-draft post.
	 *
	 * @since 4.7.0
	 */
	public function ajax_insert_auto_draft_post() {
		if ( ! check_ajax_referer( 'customize-menus', 'customize-menus-nonce', false ) ) {
			wp_send_json_error( 'bad_nonce', 400 );
		}

		if ( ! current_user_can( 'customize' ) ) {
			wp_send_json_error( 'customize_not_allowed', 403 );
		}

		if ( empty( $_POST['params'] ) || ! is_array( $_POST['params'] ) ) {
			wp_send_json_error( 'missing_params', 400 );
		}

		$params         = wp_unslash( $_POST['params'] );
		$illegal_params = array_diff( array_keys( $params ), array( 'post_type', 'post_title' ) );
		if ( ! empty( $illegal_params ) ) {
			wp_send_json_error( 'illegal_params', 400 );
		}

		$params = array_merge(