JS App.with_resource

application.js

// Usage: App.with_resource('user', 567, function(user) { $('report_user_name').value = user.name })
var App = {
  with_resource: function(name, id, func) {
    new Ajax.Request("/" + name + "s/" + id + ".json", {
      method: 'GET',
      onSuccess: function(transport) { func(transport.responseJSON[name]) }
    });
  }
}