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Hitting a Cloud Function when you submit a Google Form

Dustin Ingram on May 15, 2019

Google Forms is a great tool--easy to create, easy to use, etc. I was recently at a meetup talking to users about Google Cloud Platform and someone...
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Jouwert van Geene

I am a complete newby trying to connect my google forms to Google Cloud for use in Firebase for a corona-response team in the Netherlands. I get an error running the first Cloud Function.
The trigger seems ok , but cannot be tested

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Paul Jebulan de Paula

Having the same issue

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Dustin Ingram

Hi Jouwert, happy to help. What's the error?

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Jouwert van Geene • Edited

I am trying to upload screenshot but I fail ...
This is what Google Cloud gives me back:
Implementatiefout:
Function failed on loading user code. Error message: Code in file index.js can't be loaded.
Is there a syntax error in your code?
Detailed stack trace: /srv/index.js:1
(function (exports, require, module, __filename, __dirname) { def form_trigger(request):
^^^^^^^^^^^^

SyntaxError: Unexpected identifier
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:617:28)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Module.require (module.js:597:17)
at require (internal/module.js:11:18)
at getUserFunction (/worker/worker.js:439:24)

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Jouwert van Geene

The trigger script in my google form is

// Replace with the URL to your deployed Cloud Function
var url = "us-central1-inspired-rush-271907.c..."

// This function will be called when the form is submitted
function onSubmit(event) {

// The event is a FormResponse object:
// developers.google.com/apps-script/...
var formResponse = event.response;

// Gets all ItemResponses contained in the form response
// developers.google.com/apps-script/...
var itemResponses = formResponse.getItemResponses();

// Gets the actual response strings from the array of ItemResponses
var responses = itemResponses.map(function getResponse(e) { return e.getResponse(); });

// Post the payload as JSON to our Cloud Function

UrlFetchApp.fetch(
url,
{
"method": "post",
"payload": JSON.stringify({
"responses": responses
})
});
};

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Jouwert van Geene

But maybe the Cloud Function is wrong. I was not so sure as to how to implement this script from your instruction:

def form_trigger(request):
payload = request.get_json(silent=True)
print(f"Payload was: {payload}")

return "OK"

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Paul Jebulan de Paula

Hi Im also having a problem after setting it up my google form and cloud function. I tested them both separately, like the trigger works completely without fail and cloud function work if executed directly cloud function dashboard i can see right away the logs however when doing an actual test to the form like submitting the form i don't get any cloud function logs.

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Dustin Ingram

Hi there, can you share some more details? What does your Cloud Functions and Apps Script trigger look like?

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Paul Jebulan de Paula

Hi Dustin, I'm just following the whole instruction you shared. But I cant catch it from the logs it seems that its not being executed when i'm submitting a form.

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Dustin Ingram

Perhaps a silly question, but did you make sure to update var url = "<YOUR CLOUD FUNCTION URL>"?

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Paul Jebulan de Paula • Edited

ow yes and it works and it prints ok when accessing that url - us-central1-xxxxxx-csapps.cloudfun...

From the logs i can only see the image attached when I'm manually triggering it from the dashboard. See dev-to-uploads.s3.amazonaws.com/i/...

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Paul Jebulan de Paula

It seems that this doesn't work anymore. Confirmed that trigger doesn't execute the URL anymore.

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abejr

I couldn't get it to work, for some reason the data I was receiving in Firebase Cloud Functions was malformed, I had to add the following to the fetch parameters:
contentType: "application/json"
Then, the payload could be accessed from the function directly from the body object
PS found this solution from stackoverflow.com/questions/629020...

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ericad

Thanks for the post. I tried to add this functionality to a form on my own google site, and I mostly got it working; however I'm stuck on the part where you use JSON to pass things between google scripts. The google script throws an error when I include one of the semicolons that are in your script, but leaving it off results in nothing being passed to the google cloud function. I attached something that shows what I am trying to do and how I'm trying to do it. Any help debugging the JSON statement would be appreciated. Thanks!

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Paul Jebulan de Paula

Where you able to run it? We may have a similar issue. Do you see json data from gcp logs?

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Aris Vrakas

Is there a way to integrate Google Cloud functions in forms created via API?