How to automatically populate assignment group field based on caller location BEFORE saving?

[JordyZ]

Hi,

How do I make the incident form automatically populate the assignment group field based on the location of the caller before even saving the form?

Use case: I'd like the assignment group field to be immediately filled with the service desk of the caller's respective location from the moment the location is selected on the form.

There is a decision table that links the location with the assignment group, see picture in attachment.

How do I go about doing this? Thanks in advance.

[Sebas Di Loreto]

GlideRecord is not supported in client scripts for quite some time. 
Check here: https://www.servicenow.com/community/developer-forum/using-glide-record-in-client-script/m-p/1450364

[JordyZ]

I'm trying to puzzle together the answers you and @Basheer have provided, but I'm stumped.

[DrewW]

If you read the post it says its not recommended and that its not supported in scoped apps.  Since this is for incident it is most likely not a scoped app.  Also the reason they give is possible performance impact do to it getting all of the fields for a record.  Which is why I mention that I would use it in this case because the table looks like it had 2 fields in it, so the amount of returned data is small.  I would not use it to get say an incident record where I only wanted 1 field value.

[Sebas Di Loreto]

@DrewW 

Good points Drew.

I would still not use it since it is not recommended. I have seen this happening in the past where people used methods just because they worked and then they surprised when it doesn't work in workspace or mobile for example. I would still design it utilizing an Ajax call.

Thanks for your review.