Node Promises in parallel with mongo

promises-parallel.js

var allPromise = Q.all([ getTemplates(), getGroups() ])
allPromise
  .then(function (data) {
    console.log(data);
  });

function getTemplates () {
  var deferred = Q.defer()
   Template.find({}, function (err, data) {
    if (err) deferred.reject(err) // rejects the promise with `er` as the reason
    else deferred.resolve(data) // fulfills the promise with `data` as the value
  })
  return deferred.promise // the promise is returned
}

function getGroups () {
  var deferred = Q.defer()
   Group.find({}, function (err, data) {
    if (err) deferred.reject(err) // rejects the promise with `er` as the reason
    else deferred.resolve(data) // fulfills the promise with `data` as the value
  })
  return deferred.promise // the promise is returned
}