How to dynamical set de widgetDefinitions in malhar angular dashboard via rest client?

I have installed malhar-angular-dashboard module and I want to populate some widgetDefinitions with my rest data.

HTML

<div ng-controller="widgetCtrl">
   <div  dashboard-layouts="layoutOptions" class="dashboard-container"></div>
</div>

widgetRestService

.factory('widgetRestService',['$http','UrlService','$log','$q',
   function($http,UrlService,$log,$q){

  var serviceInstance = {};

  serviceInstance.getInfo = function(){
    var request = $http({method: 'GET', url: '/rest/widgets/getListInfoDashboards'})
      .then(function(success){
        serviceInstance.widgets = success.data;
        $log.debug('serviceInstance.widgets SUCCESS',serviceInstance.widgets);
      },function(error){
        $log.debug('Error ', error);
        $log.debug('serviceInstance.widgets ERROR',serviceInstance.widgets);
      });
    return request;
  };

  serviceInstance.getAllWidgets = function () {
    if (serviceInstance.widgets) {
      return serviceInstance.widgets;
    } else {
      return [];
    }
  };

  return serviceInstance;

}])

My rest service returns me this array of 3 objects :[{"name":"widgetList","title":" "},{"name":"widgetPie","title":" "},{"name":"widgetTable","title":" "}]

OtherService

.factory("OtherService", ["widgetRestService", "$log", "$q",
   function (widgetRestService, $log, $q) {

  var deferred = $q.defer();

  widgetRestService.getInfo().then(function () {

    deferred.resolve(widgetRestService.getAllWidgets());
  });

  return deferred.promise;

}])

Controller

OtherService.then(function(response){
    $scope.layoutOptions = { // layout with explicit save
      storageId: 'demo-layouts-explicit-save',
      storage: localStorage,
      storageHash: 'fs4df4d51',
      widgetDefinitions:response , //must be a list
      defaultWidgets: [],
      explicitSave: true,
      defaultLayouts: [
        {title: 'Layout 1', active: true, defaultWidgets: []}
      ]
    };
    $log.debug('layoutOptions =',$scope.layoutOptions);
  });

Result

layoutOptions: Object{defaultLayouts:Array[1],
defaultWidgets:Array[0],
explicitSave:true,
storage:Storage,
storageHash:'fs4df4d51',
storageId: 'demo-layouts-explicit-save', 
widgetDefinitions: Array[3]}

TypeError: Cannot read property '$$hashKey' of undefined at Object.extend (http://localhost:9000/bower_components/angular/angular.js:406:14) at Object.LayoutStorage (http://localhost:9000/bower_components/malhar-angular-dashboard/dist/malhar-angular-dashboard.js:1064:15)

I searched at line 2: Object.LayoutStorage and I found out this:

  angular.extend(defaults, options); //options = undefined (should have some keys and my widgetDefinitions array)
  angular.extend(options, defaults);

The options variable is undefined only when I want to setup the $scope.layoutOptions within the then callback function. Any advice how to set / avoid this ?

The problem is that the dashboard-layouts directive will compile before the asynchronous call from OtherService has finished, which means $scope.layoutOptions will be undefined.

A simple solution is to prevent the dashboard-layouts directive from compiling before $scope.layoutOptions is available.

You can do this by using ng-if:

<div ng-if="layoutOptions" dashboard-layouts="layoutOptions" class="dashboard-container">
</div>