The basic pattern for each response can be repeated for most other types. For example, this works for multiple choice:
item = items[i].asMultipleChoiceItem();
var respItem = item.createResponse(resp);
However, a checkbox can be tricky, as it may have one item, multiple items, and even "other" responses. When the response is recorded to your spreadsheet, it will appear as a comma-separated string; when received in a form submission event (e.g. in a trigger function), we get an array (... where all responses are in the first item in the array, in a comma-separated string). The createResponse() method for a checkboxItem expects an array of valid choices... so we can provide that with a little javascript magic:
item = items[i].asCheckboxItem();
// Response is a CSV string, need array
var respArray = resp.split(/ *, */);
var respItem = item.createResponse(respArray);
EDIT: Google has a bug with CheckboxItems and MultipleChoiceItems, when used with "Other" options enabled. Those "other" options are allowed, but get rendered incorrectly in the pre-filled URL, and as a result they don't appear in the displayed form. Please see and star Issue 4454.
Here's an updated version of the function from Is it possible to 'prefill' a google form using data from a google spreadsheet?, updated to handle lists, multiple choice, and checkbox responses. This version is more general, it can adapt to the headings in your spreadsheet. BONUS: if you add a column labeled "Prefilled URL", the script will write its generated URLs there.
/**
* Use Form API to generate pre-filled form URLs
*
* https://stackoverflow.com/a/26395487/1677912
*/
function evenBetterBuildUrls() {
var ss = SpreadsheetApp.getActive();
var sheet = ss.getSheetByName("Form Responses 1");
var data = ss.getDataRange().getValues(); // Data for pre-fill
var headers = data[0]; // Sheet headers == form titles (questions)
var formUrl = ss.getFormUrl(); // Use form attached to sheet
var form = FormApp.openByUrl(formUrl);
var items = form.getItems();
var urlCol = headers.indexOf("Prefilled URL"); // If there is a column labeled this way, we'll update it
// Skip headers, then build URLs for each row in Sheet1.
for (var row = 1; row < data.length; row++ ) {
Logger.log("Generating pre-filled URL from spreadsheet for row="+row);
// build a response from spreadsheet info.
var response = form.createResponse();
for (var i=0; i<items.length; i++) {
var ques = items[i].getTitle(); // Get text of question for item
var quesCol = headers.indexOf(ques); // Get col index that contains this question
var resp = ques ? data[row][quesCol] : "";
var type = items[i].getType().toString();
Logger.log("Question='"+ques+"', resp='"+resp+"' type:"+type);
// Need to treat every type of answer as its specific type.
switch (items[i].getType()) {
case FormApp.ItemType.TEXT:
var item = items[i].asTextItem();
break;
case FormApp.ItemType.PARAGRAPH_TEXT:
item = items[i].asParagraphTextItem();
break;
case FormApp.ItemType.LIST:
item = items[i].asListItem();
break;
case FormApp.ItemType.MULTIPLE_CHOICE:
item = items[i].asMultipleChoiceItem();
break;
case FormApp.ItemType.CHECKBOX:
item = items[i].asCheckboxItem();
// In a form submission event, resp is an array, containing CSV strings. Join into 1 string.
// In spreadsheet, just CSV string. Convert to array of separate choices, ready for createResponse().
if (typeof resp !== 'string')
resp = resp.join(','); // Convert array to CSV
resp = resp.split(/ *, */); // Convert CSV to array
break;
case FormApp.ItemType.DATE:
item = items[i].asDateItem();
resp = new Date( resp );
resp.setDate(resp.getDate()+1);
break;
case FormApp.ItemType.DATETIME:
item = items[i].asDateTimeItem();
resp = new Date( resp );
break;
default:
item = null; // Not handling DURATION, GRID, IMAGE, PAGE_BREAK, SCALE, SECTION_HEADER, TIME
break;
}
// Add this answer to our pre-filled URL
if (item) {
// Checking if there is any value
if(resp[0].length != 0){
var respItem = item.createResponse(resp);
response.withItemResponse(respItem);
}
}
// else if we have any other type of response, we'll skip it
else Logger.log("Skipping i="+i+", question="+ques+" type:"+type);
}
// Generate the pre-filled URL for this row
var editResponseUrl = response.toPrefilledUrl();
// If there is a "Prefilled URL" column, update it
if (urlCol >= 0) {
var urlRange = sheet.getRange(row+1,urlCol+1).setValue(editResponseUrl);
}
}
};
