momentToDuration.js

function(value) {
        if (Em.isNone(value)) {
          return null;
        }

        var dur = moment.duration(value, 'seconds');

        var years = dur.years();
        var months = dur.months();
        var days = dur.days();
        var hours = dur.hours();
        var minutes = dur.minutes();

        var strTab = [];
        if (years > 0) {
          strTab.push('%@ an'.fmt(years) + ((years > 1) ? 's' : ''));
        }

        if (months > 0) {
          strTab.push('%@ mois'.fmt(months));
        }

        if (days > 0) {
          strTab.push('%@ jour'.fmt(days) + ((days > 1) ? 's' : ''));
        }

        if (hours > 0) {
          strTab.push('%@ heure'.fmt(hours) + ((hours > 1) ? 's' : ''));
        }

        if (minutes > 0) {
          strTab.push('%@ minute'.fmt(minutes) + ((minutes > 1) ? 's' : ''));
        }

        return strTab.join(', ');
      }