How to execute an asynchronous function in skybow actions or any other expression configuration?

Document created by yuriy.stetsyuk on Jul 5, 2019Last modified by Matthias_Walter on Oct 8, 2019
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If you need to wait for callbacks in skybow actions or other expression configurations before processing further, it's recommended using jQuery.Deferred() object.

The following code snippet demonstrates how to achieve this:

var deferrer = jQuery.Deferred(); //new deferred object is created.
window.setTimeout(function () {
deferrer.resolve(); //Resolve the deferred. Then e.g. next predefined Rich Form's actions will start to execute.
}, 10000);
return deferrer.promise(); //returns promise object



After a new item is added you want to update its permissions and allows only Approver to edit this item.

In order to achieve this, open a new form in solution studio and add new action Execute Script after Save Form action for Save button:

New Form


Javascript code for Execute Script (Update Permissions) action:

var deferrer = jQuery.Deferred();

var ctx = SP.ClientContext.get_current();
var web = ctx.get_web();
var list = web.get_lists().getByTitle("DemoList");
var item = list.getItemById([[ID]]);
var approver = web.ensureUser([[Approver.LoginName]]);

//Break permission inheritance and clear existing permission rules.

var itemAssignments = item.get_roleAssignments();

//Set read-only permisisons for site default groups
var roleDefBindingsReader = SP.RoleDefinitionBindingCollection.newObject(ctx);
itemAssignments.add(web.get_associatedVisitorGroup(), roleDefBindingsReader);
itemAssignments.add(web.get_associatedMemberGroup(), roleDefBindingsReader);
itemAssignments.add(web.get_associatedOwnerGroup(), roleDefBindingsReader);

//Allow Approver to edit the item
var roleDefBindingsApprover = SP.RoleDefinitionBindingCollection.newObject(ctx);
itemAssignments.add(approver, roleDefBindingsApprover);

ctx.executeQueryAsync(function() {
}, function(sender, args){
deferrer.reject("Failed to update item permissions: " + args.get_message())

return deferrer.promise();


Execute Script (Update Permissions) action