A simple utility function for rendering a sequence of templates in express for node.

utils.js

/*
A simple utility function for rendering a sequence of templates in express for node.

Usage:
var utils = require('./utils'); 
utils.renderTemplates(res, ['header', 'about', 'footer'], {title: 'About'});
*/
module.exports.renderTemplates = function(res, templates, params, callback, error_callback) {

    // By default we just send the html in the response
    if (typeof callback != 'function') {
        callback = function(html) {
            res.send(200, html);
        };
    }

    if (typeof error_callback != 'function') {
        error_callback = console.log;
    }

    // Recursively render the templates.
    var render = function(templates, rendered_html) {
        var template_to_render = templates.shift();
        // If it's undefined, we're finished.
        if (typeof template_to_render == 'undefined') {
            callback(rendered_html);
        } else {
            // Otherwise we have more work to do.
            res.render(template_to_render, params, function(err, html) {
                if (err && typeof error_callback == 'function') {
                    error_callback(err);
                }
                render(templates, rendered_html + html);
            });
        }
    }
    
    // Let the rendering begin.
    render(templates, '', callback);
}