apps script : how can I simplify to avoid multiple calls to server? - google-apps-script

Question

I cannot find the way to properly simplify the nested loops to build an array of values and data validations and then set them all in the sheet in a single call to the server.
Is it even possible ??
function onEdit(){
testValidation()
}
function testValidation() {
var sheet = SpreadsheetApp.getActiveSheet();
var source = SpreadsheetApp.getActive().getRange('A3:J4').getValues()
var destination = SpreadsheetApp.getActive().getRange('M3:V4');
destination.clearDataValidations();
var validationRule = SpreadsheetApp.newDataValidation().requireCheckbox().build(); // checkbox
for(var r = 0; r <= source.length - 1; r++) {
for(var c = 0; c <= source[0].length - 1; c++) {
if(source[r][c] ==="" ){
sheet.getRange(r + 3,c + 14).clearDataValidations().setValue(null)
}else{
sheet.getRange(r + 3,c + 14).setDataValidation(validationRule).setValue("true")
}
}
}
}
Link to shared spreadsheet :
https://docs.google.com/spreadsheets/d/1fyFPIssp3zUjRmWxU9LqHvpowH8SHdMQYizNOZ3xKsA/edit?usp=sharing

Answer 1

In your situation, how about the following modified script?
Modified script 1:
function testValidation() {
var check = SpreadsheetApp.newDataValidation().requireCheckbox().build();
var sheet = SpreadsheetApp.getActiveSheet();
var source = sheet.getRange('A3:J4').getValues();
var values = source.map(r => r.map(c => c != "" ? check : null));
sheet.getRange('M3:V4').clearContent().setDataValidations(values).check();
}
In this modification, the checkboxes and the clear are set by setDataValidations.
I thought that this method might be low process cost.
Modified script 2:
function testValidation() {
// Ref: https://stackoverflow.com/a/21231012/7108653
const columnToLetter = column => {
let temp,
letter = "";
while (column > 0) {
temp = (column - 1) % 26;
letter = String.fromCharCode(temp + 65) + letter;
column = (column - temp - 1) / 26;
}
return letter;
};
var sheet = SpreadsheetApp.getActiveSheet();
var source = sheet.getRange('A3:J4').getValues();
var rangeList = source.flatMap((r, i) => r.flatMap((c, j) => c != "" ? `${columnToLetter(j + 14)}${i + 3}` : []));
sheet.getRange('M3:V4').clearDataValidations().setValue(null);
if (rangeList.length == 0) return;
sheet.getRangeList(rangeList).insertCheckboxes().check();
}
I thought that the cells of M3:V4 can be cleared using sheet.getRange('M3:V4').clearDataValidations().setValue(null).
In this modification, the checkboxes are put using insertCheckboxes() method of Class RangeList.
References:
insertCheckboxes()
setDataValidations()