Interact with service portal widget in catalog item

[larstange]

Hi all

So we are currently analyzing if we can replace our current service catalog (based on the standard ServiceNow interface and self-service module - no CMS) with the Service Portal.

We have a number of more advanced catalog items, where we use UI macro to display additional information to the user, that we are not able to achieve using the available variable types.

As UI Macros are not available in Service Portal we need a replacement. Here I have discovered a new "widget" field the catalog varaible form, where you can point to a portal widget and get it displayed on the catalog item.

But we need to be able to interact with the widget and affect what it is displaying based on the values selected in the variables on the catalog item.
Basically I want to write to the data in the widget's scope via a catalog client script.

The normal way of accessing an angular scope from the outside is using the syntax

var scope = angular.element($("#[element]")).scope();

So I have created a clone of the Hello World 1 widget and modified it so the input field has an ID

<div>
 Enter your name:
 <input id="helloWorld" type="text" ng-model="c.data.sometext" ng-change="c.display()"/>
 <h1>{{ c.data.message }}</h1>
</div>

Then I try to access the scope from an onChange script in the catalog item

     var scope = angular.element(document.getElementById('helloWorld')).scope();
       scope.$apply(function(){
               scope.data.sometext = newValue;
       });

But i get an error in the console saying (g_env) [SCRIPT:EXEC] Error while running Client Script "onChange_name": TypeError: Cannot read property 'element' of null

So it looks like the catalog client scripts does not have access to the loaded angular in any way. I have tried some different thinks to try and be able to access angular but no avail.

If anybody has an idea I would appreciate any pointers - if we don't solve this, then the portal is not an option.

Regards

Lars

nathanfirth

[larstange]

Another approach can be seen this post Embedding widgets in Service Catalog - ServicePortal.io - Service Portal, CMS, and Custom Apps

[Bhavin Jain1]

Hi Lars,

I tried accessing the variable name using $scope.page.g_form.getValue('variable_name') in client controller.

Here on change of variable, I'm populating the variable based on client script in another variable , but when I use alert($scope.page.g_form.getValue('variable_name'));

I was getting error "Cannot read property 'getValue' of undefined".

Could you let me know if I'm missing something over here.

Thanks,

Bhavin

[larstange]

Did you include ($scope) in your initialization of the client controller?

function($scope) {

  /* widget controller */

  var c = this;

[Bhavin Jain1]

Hi Lars,

Yes I have included $scope.

Below is the code i was trying from the example you shared above.

function ($scope, $http, spUtil, nowAttachmentHandler, $rootScope, $location,$window) {

  var c = this;

$scope.$watch(function () {

alert($scope.page.g_form.getValue('hide'));

              return $scope.page.hide.value;  

    }, function (value) {  

//           //Update local data object with data from variable  

      c.data.message = value ? 'Content of name variable: ' + value : '';  

alert(c.data.message);

});  

It threw error saying "Cannot read property 'getValue' of undefined"

Thanks,

Bhavin

[larstange]

Where do you run the code - it will not work within in widget editor. The page.g_form part is only available when the widget is run via a macro variable in a cataog item