Hello Everyone,

A custom function is a software code that can be used to automate a process and this allows you to automate a notification, call a webhook, or perform logic immediately after a workflow rule is triggered. This feature helps to automate complex tasks and calculations. 

Lets take the below use case from a customer - 

if(tasklist_picklist == null)
{
	return "No value selected";
}
else
{
	info tasklist_picklist;
	tasklists = tasklist_picklist.toList();
}
endpoint = "https://projectsapi.zoho.com/";
getAllTasklists = invokeurl
[
url :endpoint + "api/v3/portal/" + portalId + "/projects/" + projectId +
 "/tasklists"
type :GET
connection:"projects"
];
// info "getAllTasklists : "+getAllTasklists;
for each  tasklist in getAllTasklists.get("tasklists")
{
	tasklistName = tasklist.get("name");
	if(tasklists.contains(tasklistName))
	{
		tasklists.remove(tasklists.indexOf(tasklistName));
		info tasklistName + " removed";
	}
}
info " tasklists : " + tasklists;
taskTemplateResponse = invokeurl
[
	url :endpoint + "api/v3/portal/" + portalId + "/templates/tasklists"
	type :GET
	connection:"projects"
];
if(taskTemplateResponse.containKey("task_list_templates"))
{
	templates = taskTemplateResponse.get("task_list_templates");
	templateMap = Map();
	for each  template in templates
	{
info "Template Name : " + template.get("name") + "-------- >  Id : 
"+ template.get("id");
	if(tasklists.contains(template.get("name")))
	{
		templateMap.put(template.get("name"),template.get("id"));
	}
	}
}
info templateMap;
for each  template in templateMap
{
// info template;
taskTemplateId = template;
associateTaskTemplateParameter = Map();
associateTaskTemplateParameter.put("task_template_id",taskTemplateId);
associateTaskTemplateParameter.put("shift_days",toString
(zoho.currenttime,"YYYY-MM-dd'T'HH:mm:ss") + "Z");
associateTaskTemplateResponse = invokeurl
[
url :endpoint + "restapi/portal/" + portalId + "/projects/" + projectId +
 "/tasklists/"
type :POST
parameters:associateTaskTemplateParameter
connection:"projects"
];
	info associateTaskTemplateResponse;
}
return "success";

Creating custom functions in Zoho Projects is straightforward and well-documented. Zoho provides a range of built-in functions that you can use as a starting point, and you can also easily define your own functions using Zoho's scripting language, Deluge. Give it a try and see how it can save your time and boost your productivity!

Watch this space for more such custom function codes.