The g_form.getControl method does not work after ordering - Known Error

The g_form.getControl method does not work after ordering Description The g_form.getControl method does not work on sc_req_item and sc_task tables. The functionality only works when using with g_sc_form.

Use of g_sc_form is not documented in Product Documentation.

Steps to Reproduce

Create the following variable:

Type: Single Line Text Name: MyVariable Question: MyVariable Question Create a Catalog Client Script:

Type: OnLoad Name: OL Applies: check all 3 boxes Script: function onLoad() { var myControl = g_form.getControl('MyVariable'); alert(myControl); }

Then order the item and view the order. The following text alerts: undefined

Root cause: This functionality works at ordering due to the implementation of g_form being a ServiceCatalogForm.

This class generally supports the functionality outlined in Glide class overview .

However, after ordering, the g_form is a GlideForm . Not only does this implementation not correctly support the getControl method, as described in ServiceNow documentation, it is also responsible for other issues, such as long-running-script issues when using the setMandatory method.

Workaround The workaround is to make use of the g_sc_form object and call its getControl function.

The example below shows how to correctly check if g_sc_form is available before making use of getControl :

var form = typeof g_sc_form != "undefined" ? g_sc_form : g_form; var myControl = form.getControl("VARIABLE");