How to use ForEach control get collection value from customer activity

[futureneo86]

Hi,
I have an custom activity named "ApproveUser"
protected override async Task OnExecuteAsync(WorkflowExecutionContext context, CancellationToken cancellationToken)
{
var user = new User
{
Name = "LTA"
Email =new List(){"[email protected]","[email protected]","[email protected]"},
Status=1
};
Output.SetVariable("User", user);
return Done();
}
Moreover, I want to user ForEach control to loop Activities.ApproveUser.User.Email, and then sendemail to each element of Email. How to design it?

Thanks for your support

[sfmskywalker]

Nice use case!

So first, you would add a ForEach activity to the workflow (connecting the User.Done outcome to it).
Then set the ForEach.CollectionExpression to either a Liquid or JavaScript expression:

Liquid: { Variables.User.Email }
JavaScript: (User.Email) (make sure to include the parentheses; there's a quirk in JINT that would otherwise return an empty value).

Then connect the ForEach.Iterate outcome to the SendEmail activity, and connect SendEmail.Done back to the ForEach activity, which closes the loop.

When all emails have been sent, the ForEach.Done outcome will be executed, so you can continue the workflow using that outcome (if you have any additional activities to execute).

[jayachandra21]

@sfmskywalker
Even I do have same type of requirement and follow the same approach design the workflow. In ForEach loop i have set ForEach.CollectionExpression as "JavaScript" expression as (User.Email).
Getting the following error in the ForEach loop: Error while evaluating JavaScript expression "(User.Email)". Message: User is not defined