Copy Paste into formula as apps script - google-apps-script

Question

I'm trying to run a google apps script which takes a series of importrange functions and puts them into an arrayformula query. I've successfully created a cell which actively accumulates the correct links for use in the importrange and puts it into a cell as a string. All I need the script to do is to copy that string and paste it as a formula in another cell. I can do this manually pretty easily, but I'd like to be able to set it up on a timer so it does it automatically on a certain time period.
As far as I've gotten is below and it doesn't work at all:
function Update Import Ranges() {
var spreadsheet = SpreadsheetApp.getActive();
var source = spreadsheet.getRange('B2').activate();
spreadsheet.getCurrentCell('B3').setFormula(???);
spreadsheet.getRange('B3').activate();
};

Answer 1

accumulates the correct links for use in the importrange and puts it into a cell as a string
The importrange() function only accepts two parameters: one for the spreadsheet to read from, and another to specify which range in the spreadsheet to return. To read from several spreadsheets and/or ranges with importrange(), you will have to create several formulas.
Alternatively, use an Apps Script function that mimics importrange() but supports multiple spreadsheets and ranges, such as the ImportMultipleRanges() function. You could call it like this:
function updateDataFromOtherSpreadsheets() {
var rangeToUpdate = "All Data!A2";
var sourceSpreadsheetKeysRange = "Config!B2:B5";
var sourceSpreadsheetDataRange = "Config!C2:C5";
var add_spreadsheet_name_prefix = false;
var add_sheet_name_prefix = false;
var ignore_blank_rows = true;
var ss = SpreadsheetApp.getActive();
var spreadsheet_keys = ss.getRange(sourceSpreadsheetKeysRange).getValues();
var range_strings = ss.getRange(sourceSpreadsheetDataRange).getValues();
var data = ImportMultipleRanges(spreadsheet_keys, range_strings, add_spreadsheet_name_prefix, add_sheet_name_prefix, ignore_blank_rows);
ss.getRange(rangeToUpdate).offset(0, 0, data.length, data[0].length).setValues(data);
}
To answer your question, you can fix the syntax errors and semantics in your function like this:
function updateImportrangeFormula() {
const sheet = SpreadsheetApp.getActiveSheet();
const ssId = sheet.getRange('B2').getValue();
const rangeA1 = sheet.getRange('C2').getValue();
const formula = '=importrange("' + ssId + '", "' + rangeA1 + '")';
sheet.getRange('B3').setFormula(formula);
}