"TypeError: Cannot read property 'length' of undefined" Converting Google Sheet data into a Google Doc template using Google Apps Script

Question

Google sheet folder containing files: https://drive.google.com/drive/folders/1hPKQk7eRjSdlMDjiZI2BZrHIRhzVtYG5?usp=sharing

Im trying to fill out templates in google docs using data from my Test Merge google sheet file, specifically in the tab named "PrintThis". I have a Google Apps script added to my "Test Merge" google sheet file but im getting this error: "TypeError: Cannot read property 'length' of undefined". The data in PrintThis will be varying in the number of rows so I am guessing the error is caused by this line?

    var tactics = Sheets.Spreadsheets.Values.get('1xSWskGS8B_3Y35I4ycAjFZQiGbfJo13O3837RKnxnpk', 'A4:J');    

But when I do A4:J6 just to test it for this static set of data it still gives me the same error. How do I fix this in a way that even when the PrintThis tab has a dynamic number of rows and my PrintThis tab can be moved(ex. a new sheet/tab can be placed on the left or right of the PrintThis tab)?

Answer 1

If you want to get the value of "Test Merge" using Sheets API, make sure to add the sheet name along with the range. Example: "Test Merge!A4:J"

Example:

Code:

function myFunction() {

  Logger.log(Sheets.Spreadsheets.Values.get('somespreadsheetid', 'Test Merge!A4:J').values);
}

Output:

Or

Since you are using Google Apps Script, you could use SpreadsheetApp.

Code:

function myFunction() {
  var sh = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Test Merge");
  var range = sh.getRange(4, 1, sh.getLastRow() - 4 + 1, 10);
  var val = range.getValues();
  Logger.log(val)
}

Output:

References:

SpreadsheetApp

Method: spreadsheets.values.get