A simple handlebars helper file to use with NodeJs/Express that is using the handlebars for the view engine.

barsHlpr.js

var moment = require('moment');

var _dateFormats = {
  short: "MMMM DD, YYYY",
  long: "dddd DD.MM.YYYY HH:mm"
};

var barsHlprs = {};

barsHlprs.ifIn = function (elem, list, options) {
  if (list.indexOf(elem) > -1) {
    return options.fn(this);
  }
  return options.inverse(this);
};

barsHlprs.block = function (name) {
  var blocks = this._blocks;
  content = blocks && blocks[name];
  return content ? content.join('\n') : null;
};
barsHlprs.contentFor = function (name, options) {
  var blocks = this._blocks || (this._blocks = {});
  block = blocks[name] || (blocks[name] = []); //Changed this to [] instead of {}
  block.push(options.fn(this));
};

barsHlprs.dateFormatter = function (datetime, format) {
  format = _dateFormats[format] || format;
  return moment(datetime).format(format);
};

barsHlprs.lenghtOf = function (arr) {
  if (arr && arr.length) {
    return arr.length;
  }
  return 0;
}

barsHlprs.hasPastDate = function (date, options) {
  if (date) {
    if (moment().diff(moment(date)) > 0) {
      return options.fn(this);
    }
    else {
      return options.inverse(this);
    }
  }
  else {
    return options.inverse(this);
  }
};

module.exports = barsHlprs;