Logic of Everyday Things

ServiceNow

  • Ensuring Data Integrity in Custom Scoped Applications with Contractual

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    Building custom scoped applications in ServiceNow, it is important to make sure data is clean, consistent, and fits the expected format. IMO – ServiceNow doesn’t do enough to enforce data validation. To amend that, I wrote Contractual.

    What is Contractual?

    Contractual is a handy script include for consistent data validation. You can wrap variables or objects and run all kinds of checks on them. If something’s off, it throws a clear error. Its fluent interface makes validation code neat and readable.

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  • Better error handling with exception objects

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    If you’ve spent time writing ServiceNow Script Includes, you’ve probably run into the classic issue of checking for errors when working with GlideRecord. Normally, you’d write code like this:

    var gr = new GlideRecord('incident');
gr.short_description = 'Test Incident';
if (!gr.insert()) {
    gs.error('Failed to insert: ' + gr.getLastErrorMessage());
}

    While this works, it’s easy to miss error handling, especially in larger scripts, and the logic for checking success/failure can get repetitive.

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