localization_helper.js

Handlebars.registerHelper('loc', function(property, fn) {
  var str;
  // we are bound to a value, it is now the context
  if (fn.contexts && typeof fn.contexts[0] === 'string') {
    str = fn.contexts[0];

  // Convention, start all localization keys with _
  } else if (property[0] === '_') {
    str = property;

  // Convention, start all globals with capital
  } else if (/[A-Z]/.test(property[0])) {
    str = Em.getPath(window, property)

  // all other's are local properties
  } else {
    str = this.getPath(property)
  }

  return new Handlebars.SafeString((str || '').loc(''));
});

// use:
// {{loc _some_string}}
// {{#bind App.someString}}{{loc App.someString}}{{/bind}}
// {{#bind view.localString}}{{loc view.localString}}{{/bind}}