上記の答えに加えて-このソリューションでは、スプレッドシートセルを追加する必要はありません。
フォームの送信に組み込みのイベントハンドラを使用して、一意のIDを取得できます。スプレッドシートはフォームの宛先であるため、行を削除しても実際には応答は削除されません。それを念頭に置いて...
編集：IDの必要性を削除し、日付のフォーマットの問題に対処しました。
/**
* This function extracts the relevant properties from the event handler,
* then uses them to get the uniqueID and record the response
* @param {Object} e The event parameter for form submission to a spreadsheet;
* e has the following properties values, range, namedValues
*/
function onFormSubmit(e) {
var uniqueID = getUniqueID(e.values);
recordResponseID(e.range, uniqueID);
}
/**
* Records the unique ID for this response to the correct cell.
* @param {Object} eventRange Range in which the response is written
* @param {Integer} uniqueID Unique id for this range
*/
function recordResponseID(eventRange, uniqueID) {
var row = eventRange.getRow();
var column = eventRange.getLastColumn() + 1;
var sheet = SpreadsheetApp.getActiveSheet();
sheet.getRange(row, column).setValue(uniqueID);
}
/**
* A shortcut function to get the form that is connected to this spreadsheet
* @return {Form} The form associated with this spreadsheet.
**/
function getConnectedForm() {
var formUrl = SpreadsheetApp.getActiveSpreadsheet().getFormUrl();
var form = FormApp.openByUrl(formUrl);
return form;
}
/**
* Returns a unique ID for the response, by finding the actual Response that
* has the same properties.
* @param {Array} eventValues Array of: Timestamp_string, form_response_value...
* @return {Integer} The unique id (by 1 based array position) of the Response
*/
function getUniqueID(eventValues) {
var isMatch = false;
var eventItems = eventValues.slice(1);
var responses = getConnectedForm().getResponses();
//loop backwards through responses (latest is most likely)
for (var i = responses.length - 1; i > -1; i--) {
var responseItems = responses[i].getItemResponses();
//check each value matches
for (var j = 0; j < responseItems.length; j++) {
if (responseItems[j].getResponse() !== eventItems[j]) {
break;
}
isMatch = true;
}
if (isMatch) {
return i + 1;
}
}
}
function testOnSubmit() {
var answers = [
["Sue", "39", "Okay I suppose"],
["John", "22", "Great"],
["Jane", "45", "yeah no"],
["Bob", "33", "Super"]
];
var form = getConnectedForm();
var items = form.getItems();
for (var i = 0; i < answers.length; i++) {
var formResponse = form.createResponse();
for (var j = 0; j < items.length; j++) {
var item = items[j];
var itemResponse = item.asTextItem().createResponse(answers[i][j]);
formResponse.withItemResponse(itemResponse);
}
formResponse.submit();
Utilities.sleep(500);
}
}
