Cannot deploy Firestore Cloud Function

Question

I'm trying to deploy a simple function on Firebase Cloud Functions but console logs an error that I can't figure out where is

My index.js:

const functions = require('firebase-functions');
const admin = require('firebase-admin')
admin.initializeApp()

exports.updateAccount = functions.firestore.document('accounts/{client_id}/movements').onWrite(change => {
    const document = change.after.exists ? change.after.data() : null
    console.log(document)
})

Console says:

⚠  functions: failed to create function updateAccount
HTTP Error: 400, The request has errors


Functions deploy had errors with the following functions:
        updateAccount


To try redeploying those functions, run:
    firebase deploy --only functions:updateAccount


To continue deploying other features (such as database), run:
    firebase deploy --except functions

Error: Functions did not deploy properly.

If you're having a problem with the Firebase CLI showing unexpected errors, you should reach out to Firebase support directly. firebase.google.com/support/contact — Doug Stevenson
– Doug Stevenson, Commented Jan 22, 2019 at 17:11

SherylHohman · Accepted Answer · 2020-01-20 19:04:52Z

10

Your cloud function argument always points to the document level, not the collection level.

exports.updateAccount = functions.firestore
  .document('accounts/{client_id}/movements/{movement_id}')
  .onWrite(change => {
     const document = change.after.exists ? change.after.data() : null
     console.log(document)
})

You are trying to make the deployment in the collection level, not in the document level.

edited Jan 20, 2020 at 19:04

SherylHohman

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answered Feb 1, 2019 at 14:04

Dev

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9 Comments

Dharmaraj Over a year ago

Hello, my path is something like, Users/{UserID}/username Users is collection, {UserID} is document and username is a field in the document. I am using a onCreate() trigger for the path mentioned above but getting the same error. I cannot use the path Users/{UserID}/ because username field may not be existing when {UserID} document is created. username takes a few seconds to get updated so I need to use onCreate() on the field.

Dev Over a year ago

why you are mentioning the field name in function deployment ? You don't want to mention the field name,instead you just mention to the document being created as wild card like Users/{UserID}.The UserID is the reference to the document being created

Dharmaraj Over a year ago

That's what I'm saying. Your answer worked. But username field may take upto 10 seconds to get into the document. The document {UserUID} gets created way to early that my username field. So if I use onCreate() on the document name itself. It returns undefined 🙁

Dev Over a year ago

Your point is the username field is taking some time to reflect back..?

Dharmaraj Over a year ago

Yes, thats taking time.The username field can take upto 10 seconds to update after the Dcoument is created. SO it returns undefined to me.

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