wii-integration

From the template engine consolidation library.

Installation

$ npm install wii-integration

Supported template engines

• atpl
• bracket
• doT.js (website)
• dust (unmaintained) (website)
• dustjs-linkedin (maintained fork of dust) (website)
• eco
• ect (website)
• ejs (website)
• haml
• haml-coffee
• hamlet
• handlebars (website)
• hogan (website)
• htmling
• jade (website)
• jazz
• jqtpl
• JUST
• liquor
• lodash (website)
• marko (website)
• mote (website)
• mustache
• nunjucks (website)
• plates
• pug (formerly jade) (website)
• QEJS
• ractive
• react
• slm
• swig (unmaintained)
• swig (maintained fork)
• teacup
• templayed
• twig
• liquid (website)
• toffee
• underscore (website)
• vash
• walrus (website)
• whiskers

NOTE: you must still install the engines you wish to use, add them to your package.json dependencies.

API

All templates supported by this library may be rendered using the signature (path[, locals], callback) as shown below, which happens to be the signature that Express 3.x supports so any of these engines may be used within Express.

NOTE: All this example code uses cons.swig for the swig template engine. Replace swig with whatever templating you are using. For example, use cons.hogan for hogan.js, cons.jade for jade, etc. console.log(cons) for the full list of identifiers.

var cons = require('consolidate');
cons.swig('views/page.html', { user: 'tobi' }, function(err, html){
  if (err) throw err;
  console.log(html);
});

Or without options / local variables:

var cons = require('consolidate');
cons.swig('views/page.html', function(err, html){
  if (err) throw err;
  console.log(html);
});

To dynamically pass the engine, simply use the subscript operator and a variable:

var cons = require('consolidate')
  , name = 'swig';

cons[name]('views/page.html', { user: 'tobi' }, function(err, html){
  if (err) throw err;
  console.log(html);
});

Promises

Additionally, all templates optionally return a promise if no callback function is provided. The promise represents the eventual result of the template function which will either resolve to a string, compiled from the template, or be rejected. Promises expose a then method which registers callbacks to receive the promise’s eventual value and a catch method which the reason why the promise could not be fulfilled. Promises allow more synchronous-like code structure and solve issues like race conditions.

var cons = require('consolidate');

cons.swig('views/page.html', { user: 'tobi' })
  .then(function (html) {
    console.log(html);
  })
  .catch(function (err) {
    throw err;
  });

Caching

To enable caching simply pass { cache: true }. Engines may use this option to cache things reading the file contents, compiled Functions etc. Engines which do not support this may simply ignore it. All engines that consolidate.js implements I/O for will cache the file contents, ideal for production environments. When using consolidate directly: cons.swig('views/page.html', { user: 'tobi', cache:true }, callback); Using Express 3 or higher: app.locals.cache = true or set NODE_ENV to 'production' and Express will do this for you.

Express 3.x example

var express = require('express')
  , cons = require('consolidate')
  , app = express();

// assign the swig engine to .html files
app.engine('html', cons.swig);

// set .html as the default extension
app.set('view engine', 'html');
app.set('views', __dirname + '/views');

var users = [];
users.push({ name: 'tobi' });
users.push({ name: 'loki' });
users.push({ name: 'jane' });

app.get('/', function(req, res){
  res.render('index', {
    title: 'Consolidate.js'
  });
});

app.get('/users', function(req, res){
  res.render('users', {
    title: 'Users',
    users: users
  });
});

app.listen(3000);
console.log('Express server listening on port 3000');

Template Engine Instances

Template engines are exposed via the cons.requires object, but they are not instantiated until you've called the cons[engine].render() method. You can instantiate them manually beforehand if you want to add filters, globals, mixins, or other engine features.

var cons = require('consolidate'),
  nunjucks = require('nunjucks');

// add nunjucks to requires so filters can be
// added and the same instance will be used inside the render method
cons.requires.nunjucks = nunjucks.configure();

cons.requires.nunjucks.addFilter('foo', function () {
  return 'bar';
});