pubsubService.js

/**
 * Module for abstracting pub sub
 * across all scopes
 * @example
 * 
 * var events = PubSub($scope, 'MyModule:');
 * events.on('AnotherModule:Update', function(e, data) {
 *   console.log(data, 'from Update');
 * });
 * events.emit("Change", {myData:'data'});
 * // emits event "MyModule:Change"
 * 
 */
angular.module('testApp')
.factory('PubSub', function PubSub($rootScope){
  return function($scope, customPrefix) {
    var prefix = customPrefix || '';
    return {
      on: function (event, callback) {
        var unsubscribe = $rootScope.$on(customPrefix + event, callback);
        $scope.$on('$destroy', unsubscribe);
        return unsubscribe;
      },
      emit: function (event, data) {
        return $rootScope.$emit(customPrefix + event, data);
      }
    }
  }
});