Generate form dynamically based on json at runtime

RishabhB
Tera Contributor

4 hours ago

Hello,

 

Can someone please guide me on how to achieve a functionality in service portal where a form needs to be dynamically generated based on a JSON file uploaded?

 

Description- There should be a field for uploading a JSON in a catalog item. Once a file is uploaded, editable fields should be generated immediately based on the fields mentioned in the JSON file. Once it is submitted, a new request along with RITM should get created.

Note- The JSON file can be having any number of fields.

 

Thanks in advance!

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Matthew_13
Tera Guru

3 hours ago

Hi RishabhB

 

ServiceNow does not support creating catalog item variables dynamically at runtime based on an uploaded JSON file. Variables are static by design.

Recommended (supported) approach

Use a custom Service Portal widget inside the catalog item:

  • Add a file upload in the widget

  • Parse the uploaded JSON (client/server)

  • Dynamically render fields using Angular (ng-repeat)

  • Capture user input back into a single JSON object

  • Submit the catalog item normally → RITM is created

  • Store the JSON on the RITM or a custom table

What won’t work

  • Dynamically creating catalog variables

  • Variable sets for unknown field counts

Bottom line:
ServiceNow’s supported solution is custom widget + JSON storage, not dynamic catalog variables.

 

@RishabhB  - Please give a thumbs up and Accepted Solution if you find Helpful!

 
 
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