app/assets/javascripts/models/meta_datum_date.coffee
class MetaDatumDate
@formattedValue: (metaDatum)->
value = metaDatum.value
if value.match(/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\+\d{2}:\d{2}/)?
date = moment(value, "YYYY-MM-DDTHH:mm:ss z")
else if value.match(/\d{4}:\d{2}:\d{2}\s\d{2}:\d{2}:\d{2}/)?
date = moment(value, "YYYY:MM:DD HH:mm:ss")
else if value.match(/\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}\s\+\d{2}\d{2}/)?
date = moment(value, "YYYY-MM-DD HH:mm:ss z")
if date? then date.format("DD.MM.YYYY") else value
window.App.MetaDatumDate = MetaDatumDate