How to reference multiple tables in one field using scripted reference qualifier?

[sambhogal]

Happy New Year Folks!!

I want to be able to reference multiple tables in a field (named 'Target', reference type field) based on the value of another field (named 'Type').

For e.g.

when 'Type' = 'Service Offering', field 'Target' should reference 'service_offering' table;

when 'Type' = 'Configuration Item', field 'Target' should reference 'cmdb_ci' table etc.

How can this be achieved? Thanks for your help!

[The SN Nerd]

OOB Service Offering extends Business Service, which extends the CI table. CI is the base table of both,

Make your field a reference field of CI and your requirement is achievable.

You can add other exclusions to the [if true] section for your other tables.

//[Boolean condition ? [if true] : [if false];
//If you select a type of CMDB, it shows all CI's except service offerings
//If you select a type of Service Offing, it only shows SO's
javascript: (current.getValue('type')=='cmdb_ci') ? "sys_class_name!=service_offering":"sys_class_name!="current.getValue('type');

You could put the code above in a more readable "best practice" form in a script include if you wanted.

[Brian Dailey1]

Hi Simranjit,

From your requirements, it sounds like you would need to use a Document ID field type.   It can reference any record in any table, and actually exists as two fields (one to store the table and the other the record sys_id).

Please see here in the wiki:

Creating a Document ID Field - ServiceNow Wiki

Hopefully that helps.

Thanks,

-Brian