Book Image

Mastering ServiceNow - Second Edition

Book Image

Mastering ServiceNow - Second Edition

Overview of this book

ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done. The book steps through the main aspects of the ServiceNow platform, from the ground up. It starts by exploring the core architecture of ServiceNow, including building the right data structure. To add business logic and control data, and interactivity to user interaction, you will be shown how to code on both server and the client. You will then learn more about the power of tasks, events and notifications. The book will then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Furthermore, you will learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. You will then be shown how to package your applications and changes, so they can be installed elsewhere and ways to maintain them easily. If you wish to create an alternative simple interface, then explore ways to make ServiceNow beautiful using Service Portal. By the end of the book, you will know the fundamentals of the ServiceNow platform, helping you be a better ServiceNow System Administrator or developer.
Table of Contents (18 chapters)
Mastering ServiceNow Second Edition
About the Author
About the Reviewer

Manipulating forms with GlideForm

A UI Policy conditionally performs a limited set of actions on a form, such as making a field mandatory or hiding it from view. Internally, this uses a client-side class called GlideForm, which is also available for use by the system administrator.

Just like business rules, ServiceNow provides some global variables that smooth the interaction with the platform. On every form, you'll find a g_form object.


For more information, check out the developer site:!/api_doc?v=geneva&type=client&scoped=null&to=class__client_glideform__geneva.

Using GlideForm

GlideForm provides getter and setter methods that provide access to the record as it is displayed on the screen. Let's run some code in the JavaScript executor in order to understand what options are available.

  1. Navigate to a new Check-in record (Hotel > Check-ins, then press New). Populate the form as follows, but you don't need to save.

    • Room: 301 (you may need...