Question

I am using Google Forms, and when I send the answer, I want for the answer to be sent via webhook. Here is my current code:

var POST_URL = "my webhook url";
function onSubmit(e) {
    var form = FormApp.getActiveForm();
    var allResponses = form.getResponses();
    var latestResponse = allResponses[allResponses.length - 1];
    var response = latestResponse.getItemResponses();
    var payload = {};
    for (var i = 0; i < response.length; i++) {
        var question = response[i].getItem().getTitle();
        var answer = response[i].getResponse();
        payload[question] = answer;
    }
  
    var options = {
        "method": "post",
        "contentType": "application/json",
        "payload": JSON.stringify(payload)
    };
    UrlFetchApp.fetch(POST_URL, options);
};

It gives me this error as soon as I run it:

Exception: Request failed for https://WEBHOOK WEBSTIE returned code 400. Truncated server response: {"message": "Cannot send an empty message", "code": 50006} (use muteHttpExceptions option to examine full response)

I .logged options, and it was not empty. I have little no experience with JS, as I want to use it for webhook only.

Answer 1

After a bit of more research, I have found that the issue turned out to be in the "payload" parameter.

var options = {
    "method": "post",
    "contentType": "application/json",
    "payload": JSON.stringify({"content": JSON.stringify({payload}))
};
UrlFetchApp.fetch(POST_URL, options);

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