{=
	#
	# set_and_save_node.cfv
	#
	# This is called from the client. It sets and saves the given node(s).
	# Client parameters
	# v.fp.main_node_name: The main node name which becomes saved.
	# v.fp.new_nodes: Arbitrary node name/value pairs to be set and saved.

	include "templates.util.base_util";
	include "templates.util.rbac.rbac_util";

	debug_message("\n\n#### before_you_start.cfv \n\n");
	
	string session_id = volatile.session_id;
	string active_page = v.fp.active_page;
	string page_token = v.fp.page_token;

	# debug_message("#### session_id: " . session_id . "\n");
	# debug_message("#### page_token: " . page_token . "\n");

	if (get_is_valid_page_token(session_id, active_page, page_token)) then (

		string main_node_name = v.fp.main_node_name;

		# Type of main_node is string because node may not yet exist.
		node main_node;
		node new_nodes = "v.fp.new_nodes";

		if (main_node_name eq "system") then (

			main_node = "system";
		)
		else if (main_node_name eq "users_cache_preferences") then (

			string user_node_name = node_name(volatile.authenticated_user_node_path);

			# Make sure the preferences node exists
			if (!?("users_cache." . user_node_name . ".preferences")) then (
				"users_cache." . user_node_name . ".preferences" = "";
			);

			main_node = "users_cache." . user_node_name . ".preferences";
		);

		overlay_node(main_node, new_nodes);
		save_node(main_node);
	)
	else (
	
		# No permission to view this resource (URL)
		display_no_permission_html();
	);
=}