Learning ServiceNow

Setting fields mandatory and read-only

Controlling whether a user can modify a field value, as well as whether a field value is required, can be accomplished using two methods of the GlideForm (g_form) API. Respectively: setReadOnly(), and setMandatory().

Both setReadOnly() and setMandatory() accept two arguments: The field name, and a boolean value indicating whether the field should be mandatory/read-only.

In the following example, we set the business service field to read-only, and the configuration item field to mandatory:

g_form.setReadOnly('business_service', true); g_form.setMandatory('cmdb_ci', true); 

By default, when a reference field on a form is made read-only, the reference icon disappears. This behavior can be thwarted though, ...