How to get User Email who is submitting the form and save it

Question

I'm building a form using google app maker. Now I want to implement something so That I can save the name/Email of the user who is submitting the form without entering their own email address. But I have no idea how to do that. But when they send email, it shows their gmail address.

Thanks in Advance

Answer 1

Don't know If someone still need help with this. Try to add in your client script

app.Datasource.YourDataSource.item.YourField = app.user.username;

This worked for me.