xdust (WIP)

A dust template engine for express framework. it can be use to fetch templates from multiple sources like - fileSystem (templates defined under views folder), databases (Mongo, MySql) and any other place.

USE

Requiring using common js pattern.

var xDust = require('xdust');
app.engine('dust', xDust(app).__express());
app.set('view engine', 'dust');

Here app is an Express Application.

Extend

xDust(express_app, reader, redisClient);

Example reading from mongodb

 var mongoReader = {
    source: 'db',
    read: function(fullPath, templateName, cb){
        //reading from defined Template Model
        Template.findOne({name,templateName},function(err, doc){
            if(err, !doc) return cb(err, doc.body);
            return cb(new Error('Template not found!'));
        });
    }
  };   
 app.engine('dust', xDust(app, [mongoReader,...]).__express());
 app.set('view engine', 'dust'); 

Define the source as db.

  response.render('db:xyz'); 
  

Cache

Pass the redisClient in xDust and application will use a centralized caching mechanism. Which may help you in clearing cache in scalable Architecture. Todo so, you can use followings

 xDust().cache.flushAll(optionalCallBack); 
 
 or 
 
 xDust().cache.flush('key',optionalCallBack);
     

TODOs

• ~~Cache~~
  • ~~Caching of compiled template inside dust.~~
  • ~~Caching of template strings read from sources.~~
• Performance
• Tests