Book Image

Mastering ServiceNow Scripting

By : Andrew Kindred
Book Image

Mastering ServiceNow Scripting

By: Andrew Kindred

Overview of this book

Industry giants like RedHat and NetApp have adopted ServiceNow for their operational needs, and it is evolving as the number one platform choice for IT Service management. ServiceNow provides their clients with an add-on when it comes to baseline instances, where scripting can be used to customize and improve the performance of instances. It also provides inbuilt JavaScript API for scripting and improving your JavaScript instance. This book will initially cover the basics of ServiceNow scripting and the appropriate time to script in a ServiceNow environment. Then, we dig deeper into client-side and server-side scripting using JavaScipt API. We will also cover advance concepts like on-demand functions, script actions, and best practices. Mastering ServiceNow Scripting acts as an end-to-end guide for writing, testing, and debugging scripts of ServiceNow. We cover update sets for moving customizations between ServiceNow instances, jelly scripts for making custom pages, and best practices for all types of script in ServiceNow. By the end of this book, you will have hands-on experience in scripting ServiceNow using inbuilt JavaScript API.
Table of Contents (18 chapters)
Title Page
Packt Upsell

Access controls

Access controls are a security aspect of ServiceNow, and whether access is given is mainly governed by configured roles. However, if a more complex calculation as to whether users are allowed access is required, we need to use script to account for this.

Generally, access controls are defined without the need for scripting, but there are still a fair amount of scenarios that require code to be used. These are often when information about a user is needed further than their roles; for example, their group membership or company.

To amend access controls, you need to have the security_admin role and ensure that you elevate privileges and use it before trying to make changes to them. To get to the scripting aspect of an access control, you need to tick the advanced checkbox. Once this is done, the script field will appear at the bottom of the form.

For each access control, a user is only granted access if they match all three aspects of the access control: the role, condition, and...