old-tfm/app/client/app.js

if (Meteor.isClient) {

  Template.display.helpers({
    sensorDataCollection: function () {
      return SensorData.find({}, {sort: {created_at: -1}})
    }
  });

  Template.display.events({
  });

  Template.sensorData.helpers({
   created_at_formatted: function() {
      return moment(this.created_at).format("DD.MM.YYYY, hh:mm")
   }
 });
}