How to trigger outbound REST API when State is change?

[jackh]

Hi,

My use case requires to call external REST API from ServiceNow when the incident state is changed.   For example, our release pipeline will create a new incident (via inbound REST API call) for someone to approve this release.   Once the incident assignee approves the ticket by changing the State (e.g. from New to Approved), it will trigger to call outbound REST API to our release pipeline.   How to do that in ServiceNow to trigger such outbound API when State is changed?

Any advice would be appreciated.

Thanks

[jackh]

Hi Kumar,

I created a simple client script called "State changed" with following.  

        Table: Incident

        UI Type: Desktop

        Type: onChange

        Field name: State

        Script:

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

    if (isLoading || newValue == '') {

          return;

    }

    //Type appropriate comment here, and begin script below

  if (newValue == 'Awaiting User Info') {

      alert('State changed to Awaiting User Info');

  }

}

But when I change the State from "New" to "Awaiting User Info" on a test incident, it doesn't pop up the alert message.   Did I miss something here?

Thanks

[Ashok Katam]

I think state is number field in incident table, there will be a corresponding numbers for the string that we display on screen, please check Incident table for state field and use that number in the script instead of the string 'Awaiting User Info'

[tony_barratt]

Hi Jack,

It could be a better alternative to use a business rule on the incident table as suggested by bss and Tim?

edit:

Would you like some guidance on going that route?

Or have you spotted a reason not to use that approach?

Best Regards

Tony

[Abhinay Erra]

Jack Hsu,

    In your code,   <if (newValue == 'Awaiting User Info')> you are using the choice label. You should always use choice value.

Rick click on State field and click "Show choice list", you should see the value of your choice, in your case for "Awaiting User Info"

Thanks,

Abhinay

[jackh]

Changing "if (newValue == 'Awaiting User Info')" to "if (newValue == 4)" does work. Thanks for the tips.

Sorry, I'm slow on learning the ServiceNow development tool.   I just created a business rule called "Stage changed" with:

        Table: Incident [incident]

        When: after Update

        Filter Conditions: Stage, changes to, Awaiting Evidence

        Script:

function onAfter(current, previous) {

    //This function will be automatically called when this rule is processed.

    alert('State has changed to Awaiting Evidence');

}

and submitted it.   But when I change the State to Awaiting Evidence on a test incident, it doesn't pop up the alert message.   Did I miss something here?

Thanks