Does anyone know "IF" it is possible to use Google Apps Script with a Google form to auto check "IF" a document URL pasted into the form is a "shared" document?
I'm a teacher and I use Google forms to collect student work, but one of the biggest problems I experience is that students regularly submit url's to "unshared" documents for grading. I'd like to reduce/eliminate this by the form checking the entered document url to see if it is 'shared' befor the form is submitted.
Is this possible? If yes, can someone please point me in the right direction?
Here is the form I'm currently using.