CODEWITHSUNDEEP
javascriptnode.jsfirebasegoogle-cloud-firestoregoogle-cloud-functions
Mahesh Kumar
Mahesh Kumar

Reputation: 373

Cloud functions onCreate Trigger function failing HTTP Error: 400, The request has errors

When I try to add trigger for Firestore OnCreate the deployment fails for HTTP Error: 400, The request has errors.

Basically I want to write to a new doc if the record is created in different collection. but get the userId. this involves 2 write and 1 read. not sure if it is efficient way

But the log and the error has no detail on what the error is

Here's my code

'use strict';

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';

const requestPromise = require('request-promise');

admin.initializeApp();
const firestore = admin.firestore();
const cors = require('cors')({
    origin: true,
});


exports.joinCommunity = functions.region('europe-west2').firestore.document('users/{userId}/community')
    .onCreate((snap, context) => {
        const data = snap.data();
        const communityRef = firestore.doc(`community/${data['cid']}`);
        const user = {
            uid: context.params.userId,
            joined_on: context.timestamp
        }
        return communityRef.collection('members').doc(context.params.userId).set(user, { merge: true });
    });

Appreciate the support or pointer

Solution: The problem was that I had used the Collection path instead of the document path. Changing the .document(users/{userId}/community') to .document('users/{userId}/community/{communityId}') fixed the error

Additionally: Also note in my code i have used Javascript way of export in typescript. Not an issue but the right way yo use it export const joinCommunity

Upvotes: 0

Views: 470

Answers (1)

Renaud Tarnec
Renaud Tarnec

Reputation: 83093

To define a Cloud Firestore trigger, you need to specify a document path. With users/{userId}/community you are specifying a collection path.

So either you trigger your CF when a document is created in the users collection (with users/{userId}) or in the community subcollection (with users/{userId}/community/{docId}).

Have also a look at the following GitHub page https://github.com/firebase/functions-samples/tree/master/typescript-getting-started and in particular at the different ways (between JavaScript and TypeScript) for importing the Cloud Functions SDK and Admin SDK modules and for exporting the Cloud Functions.

Upvotes: 3

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