app/assets/javascripts/admin/dropdown/controllers/columns_dropdown_controller.js.coffee
angular.module("admin.dropdown").controller "ColumnsDropdownCtrl", ($scope, Columns) ->
$scope.columns = Columns.columns
$scope.toggle = Columns.toggleColumn
$scope.saved = Columns.preferencesSaved
$scope.saving = false
$scope.saveColumnPreferences = (action_name) ->
$scope.saving = true
Columns.savePreferences(action_name).then ->
$scope.saving = false