Time Stamp Script not working on Pasting/Dragging Cell Values - excel

Question

I have a script which records the time stamp on which an entry is made in a specific cell. It uses a onEdit trigger.
PROBLEM STATEMENT:
When I'm dragging/copy-pasting the data over a range of adjacent cells(in the same column), only the first entry is producing a time-stamp output.
CODE:
var s = SpreadsheetApp.getActiveSheet();
var sName = s.getName();
var r = s.getActiveCell();
if( r.getColumn() == 8 && sName == 'Processing') { //which column to watch on which sheet
var row = r.getRow();
var time = new Date();
SpreadsheetApp.getActiveSheet().getRange('CU' + row.toString()).setValue(time); //which column to put timestamp in
};
};

Answer 1

You are using onEdit to insert a timestamp when a field is edited. But when an edit is done by copy/paste or dragging a cell/range, the timestamp is applied only for the first cell in the new target range.
The reason that this is happening is that your script output recognises only the activecell and does not recognise the rest of the activerange
var r = s.getActiveCell();
var row = r.getRow();
There are several solutions to your problem.
ActiveRange:
Enable the script to process the number of rows in the active range.
function onEdit() {
var s = SpreadsheetApp.getActiveSheet();
var sName = s.getName();
var r = s.getActiveCell();
var row = r.getRow();
var ar = s.getActiveRange();
var arRows = ar.getNumRows()
// Logger.log("DEBUG: the active range = "+ar.getA1Notation()+", the number of rows = "+ar.getNumRows());
var time = new Date();
if( r.getColumn() == 8 && sName == 'Processing') { //which column to watch on which sheet
// loop through the number of rows
for (var i = 0;i<arRows;i++){
var rowstamp = row+i;
SpreadsheetApp.getActiveSheet().getRange('CU' + rowstamp.toString()).setValue(time); //which column to put timestamp in
}
}
}
Event Objects: Enable the script to take advantage of the event Objects generated by OnEdit.
In the following script, the edited range, the column, sheet name, the starting and ending row numbers are all obtained/determined by using Event Objects available to onEdit.
function onEdit(event) {
var s = SpreadsheetApp.getActiveSheet();
// Logger.log(JSON.stringify(event)); //DEBUG
var ecolumnStart = event.range.columnStart;
var erowStart = event.range.rowStart;
var erowEnd = event.range.rowEnd;
var ecolumnEnd = event.range.columnEnd;
// Logger.log("DEBUG: Range details - Column Start:"+ecolumnStart+", Column End:"+ecolumnEnd+", Row start:"+erowStart+", and Row End:"+erowEnd);
// Logger.log("DEBUG: the sheet is "+event.source.getName()+", the range = "+event.range.getA1Notation());
var sName = event.range.getSheet().getName();
// Logger.log("DEBUG: the sheet name is "+sName)
var time = new Date();
var numRows = event.range.rowEnd -event.range.rowStart+1;
if( event.range.columnStart == 8 && sName == 'Processing') { //which column to watch on which sheet
// loop though the number of rows
for (var i = 0;i<numRows;i++){
var row = event.range.rowStart+i;
SpreadsheetApp.getActiveSheet().getRange('B' + row.toString()).setValue(time); //which column to put timestamp in
}
}
}