Power of Automation : Enhancing custom date field calculations by excluding Weekends and Holidays

Power of Automation : Enhancing custom date field calculations by excluding Weekends and Holidays

Hello Everyone,

A Custom function is a user-written set of code to achieve a specific requirement. Set the required conditions needed as when to trigger using the Workflow rules (be it Tasks / Project) and associate the custom function to it.

Requirement:

One of our customers has two date fields and is currently using a formula field to calculate the number of days between them. As per design, the default formula field includes weekends and holidays in the day count. However, the customer does not want weekends and holidays to be included in the calculation. This requirement was successfully achieved using Custom Functions along with Workflow rules.
 
Custom function code:
 
portalInfo = invokeurl
[
type :GET
connection:"XXXXX"
];
holidays = portalInfo.get("portals").get(0).get("settings").get("holidays");
holidayList = List();
for each  holiday in holidays
{
holidayList.add(holiday.get("date").toDate());
}
workingDaysList = date1.workDaysList(date2,{"Saturday","Sunday"},holidayList);
info "workingDaysList : " + workingDaysList.size();
param = Map();
param.put("days_between",workingDaysList.size());
updateProject = invokeurl
[
url :"https://projectsapi.zoho.com/api/v3/portal/" + portalId + "/projects/" + projectId
type :PATCH
parameters:param.toString()
connection:"XXXXX"
];
info "updateProject : "+updateProject;
return "success";
 
Make sure to replace XXXXX with Zoho Projects connection link name along with scopes: ZohoProjects.portals.READ, ZohoProjects.projects.UPDATE. Please find the screenshot of the list of parameters to be mapped for reference.
 
We hope you found this post useful. If you have any questions, feel free to share them in the comments below.



      • Sticky Posts

      • Automate Timesheet Approvals with Multi-level Approval Rules

        Introducing Approval Rules for Timesheets in Zoho Projects. With this automation, teams can manage how timesheets are reviewed and approved by setting up rules with criteria and assigning approvers to handle submissions. Timesheet, when associated to

      • Accessibility Spotlight Series - 1

        Every user interacts with products differently, what feels intuitive to one may be challenging for another. Addressing this, accessibility is built into Zoho Project's design philosophy. This helps users navigate and perform actions with ease irrespective

      • Customize User Invites with Invitation Templates

        Invitation Templates help streamline the invitation process by allowing users to create customized email formats instead of sending a one-size-fits-all email. Different invitation templates can be created for portal users and client users to align with

      • Zoho Projects - Q3 Updates | 2025

        Hello Users, The final quarter of the year 2025 has begun, and we at Zoho Projects are all set with a plan. New targets to achieve and new milestones to reach, influenced by the lasting imprint of the past quarter. 2025's Q3 saw some new features and

      • Introducing Version-3 APIs - Explore New APIs & Enhancements

        Happy to announce the release of Version 3 (V3) APIs with an easy to use interface, new APIs, and more examples to help you understand and access the APIs better. V3 APIs can be accessed through our new link, where you can explore our complete documentation,