Google Sheets - Locking Cells after value reached and one other thing - google-apps-script

Question

Making a self-scheduling spreadsheet for my co-workers. The goal is for them to put their hours (12 or 6) in the cell that corresponds with the date and their name. I am trying to have it so that a date column will lockout after the sum cell for that column reaches a certain total.
I am using this (Google Script Lock Cells) as my basis but I am not having much luck.
function myFunction() {
function onOpen() {
var ss = SpreadsheetApp.getActive();
var source = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1");
var cell = source.getRange("B12").getValue();
var range = ss.getRange("B2:B11");
if (cell == 10) {
// Protect range B2:B11 if cell 'B12' = 10
var protection = range.protect().setDescription('Sample protected range');
Logger.log
} else {
// Remove protection if cell 'B12' is anything other than 10
var protections = ss.getProtections(SpreadsheetApp.ProtectionType.RANGE);
for (var i = 0; i < protections.length; i++) {
var protection = protections[i];
protection.remove();
}
}
}
}
I am also looking to have the sum represent shits rather than hours so if a person wrote "12" the sum column would record "1"
Any help would be amazing.

Answer 1

You should change several things
Do not nest onOpen inside myFunction - it will not work
If you want the protections to be update on every update of B12 - you should use the onEdit trigger instead of onOpen
It is better to replace cell == 10 through cell >= 10 to account for the possibility that the value accidentally trespasses the maximum
4.It is not enough to create a protection, to make it useful you need to remove editors from it
Only the owner of the script (you) should maintain access
For this, use an installable trigger instead of a simple one, to make sure that it runs always as you and not the user that opens the document
Sample (to be bound to an installable onEdit trigger):
function bindAnOnEditTiggerToMe() {
var ss = SpreadsheetApp.getActive();
var source = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1");
var cell = source.getRange("B12").getValue();
var range = ss.getRange("B2:B11");
if (cell >= 10) {
// Protect range B2:B11 if cell 'B12' = 10
var protection = range.protect().setDescription('Sample protected range');
var me = Session.getEffectiveUser();
protection.addEditor(me);
protection.removeEditors(protection.getEditors());
if (protection.canDomainEdit()) {
protection.setDomainEdit(false);
}
} else {
// Remove protection if cell 'B12' is anything other than 10
var protections = ss.getProtections(SpreadsheetApp.ProtectionType.RANGE);
for (var i = 0; i < protections.length; i++) {
var protection = protections[i];
protection.remove();
}
}
}