google-cloud-firestore

问题 I have a firestore with a collection called "chats"; I use the firestore emulator to insert a new document and I am expecting the onWrite trigger to get called while I am running index.js locally on my firebase cloud functions emulator (by running firebase emulators:start ), but it never does. I know that the emulator is connected to the right firestore emulator since I can read the data (see below), I just can't get the trigger to be invoked. // My setup: const functions = require('firebase

问题 I am having trouble using firestore index merging in order to reduce the number of required indices. Consider this example situation: Firestore Collection: test/somedoc { a: '1', b: '1', c: '1', d: '1' } This will cause Firestore to create 4 automatic single field indices on test for fields a to d. Querying this table with a few equality conditions and one unrelated sort: await db.collection('test') .where('a', '==', '1') .where('b', '==', '1') .where('c', '==', '1') .orderBy('d') .get();

问题 How can I make the value return outside the onSnapshot function? function checkIfExisting(){ const collection = firebase.firestore().collection("audit"); const getCaseID = collection.where("caseID", "==", "00001234"); getCaseID.onSnapshot(function(querySnapshot) { let wordLists = []; querySnapshot.forEach(function(doc) { //get all the scanned words under "word" field in the Firestore Database wordLists.push(doc.data().word); }); console.log("words: ", wordLists);// return a value }); console

问题 I am working on an Android Application and am using firebase as the back end for it. I am trying to get a notification system working that relies on listening to changes in the database. Having problems though as I am getting the following error. Wondered if anyone would be able to help, any extra code can be supplied. Firebase Function 'use-strict' const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(functions.config().firebase);

问题 How do I save the image to the firebase firestore, when I have uploaded the image to the firebase storage? How do I save the image to the firebase firestore, when I have uploaded the image to the firebase storage? I am supposed to have posts with a title and an image, but I don't know how to do the image part. my code is shown below .... import Foundation import FirebaseFirestore protocol DocumentSerializable { init?(dictionary:[String:Any]) } struct Post { var name: String var content:

问题 How do I save the image to the firebase firestore, when I have uploaded the image to the firebase storage? How do I save the image to the firebase firestore, when I have uploaded the image to the firebase storage? I am supposed to have posts with a title and an image, but I don't know how to do the image part. my code is shown below .... import Foundation import FirebaseFirestore protocol DocumentSerializable { init?(dictionary:[String:Any]) } struct Post { var name: String var content:

问题 I got the following cloud function which works great. It's listening for an update in the real-time database and update Firestore accordingly. Everything is fine, except when my user does not exist yet my Firestore database. This where I need to deal with Unhandled rejection that I see in the Google Cloud Functions log. So see below, in the shortened version of the function, for my db.collection("users").where("email", "==", email).get() how to stop the function to move forward and prevent

问题 I want to create a cloud function in firebase that gets triggered whenever a user logs in for the first time. The function needs to add the UID from the authentication of the specific user to a specific, already existing document in firestore. The problem is that the UID needs to be added to a document of which I do not know the location. The code I have right now doesn't completely do that, but this is the part where it goes wrong. The database looks like this when simplified organisations

问题 My computer is behind a corporate proxy. While visiting a website which is using Firebase Firestore, it is not connecting to the firebase servers. I am getting the below error in console. [2018-09-21T10:09:15.854Z] @firebase/firestore: Firestore (5.4.1): Could not reach Cloud Firestore backend. Backend didn't respond within 10 seconds. This typically indicates that your device does not have a healthy Internet connection at the moment. The client will operate in offline mode until it is able

问题 I'm having my first steps with Cloud Firestore, and I am stuck on this one. I'm looking for a where query to return me values that are >= the limit. [{ 'limit': 100, 'value': 200 }, { 'limit': 50, 'value: 50, }, { 'limit': 95, 'value': 90, }] I am using the Firebase Admin Python SDK in a Cloud Function. Any hints? 回答1: As Alex has explained, there is no way to compare two document's fields values when executing a query with Firestore. One possible approach, would be to save the result of the