Recent questions tagged firebase

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I need to create a cloud function that initiates a timer that calls another cloud function after X minutes. It ... a cost associated with that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - CollectionGroupQuery but limit search to subcollections under a particular document

This is my database structure. cities -> landmarks -> attractions(each one is a collection) Query List all ... filtering based on city_id. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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697 views

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firebase - Error Deploying Firestore Function with a space in the name of a collection

I'm trying to deploy a cloud function that updates an Algolia Search index whenever a new document is created in my ... }, "private": true } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Getting a.ref is not a function error when upgraded to angularfire 1.2

Following codebase used to work with firebase 2.3.1 and Angularfire 1.1.3 Var fb = new firebase(" ... when instantiating fbObj. Please suggest. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - "The operator '[]' isn't defined" error when using .data[] in flutter firestore

I am learning to use firestore in flutter following Net Ninja's tutorial on youtube. After user authenticatin was ... me know in the comments See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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840 views

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firebase - When will Google stop supporting GCM?

Since Firebase will be replacing GCM, I am asking myself how much longer will Google support GCM? In short: When ... of life/support of GCM? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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873 views

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firebase - How to clear Firestore persistence data?

My iOS app's firestore cache seems to have got out of sync with Firestore. As a result I've had to ... was delete documents from the database! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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firebase - How to get a Firestore document size?

From Firestore docs, we get that the maximum size for a Firestore document is: Maximum size for a document 1 MiB (1 ... document:", error); }); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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firebase - How to send notification to a Topic

I want a code to send notification from one device to multiple devices on a specific topic and I ... Firebase messaging to send notifications See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Nested arrays are not supported

The new Firebase database Firestore says Function DocumentReference.set() called with invalid data. Nested arrays are not ... I save it instead? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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834 views

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firebase - Stream builder from firestore to flutter

I am wondering how to get data from firestore to flutter app using the streambuilder. I created the necessary ... light on this. Tks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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784 views

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firebase - Firestore: Are ids unique in the collection or globally?

For the structure of my database I need to know if the automatically generated identifiers in Firebase Cloud Firestore are ... . How to do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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704 views

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firebase - PluginRegistry cannot be converted to FlutterEngine

As soon as I updated the flutter to version 1.12.13 I found this issue and can't fix it ... .registerWith(registry); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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696 views

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firebase stopped responding and lost all data without any error or issue

I Lost All the data from My Firebase realtime database. This is working properly last day. Suddenly This stopped ... me try again dialog only See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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firebase - Flutter firestore - Check if document ID already exists

I want to add data into the firestore database if the document ID doesn't already exists. What I've tried ... It should create a new document See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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firebase - Does Cloud Firestore save strings with newline characters (multiline)?

Apparently Cloud Firestore console does not display newline characters inside strings. Is there a way to inspect ... on the Firestore Console? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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758 views

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firebase - Delete index at array in Firestore

I got this data in my document: I want to delete index 0. How do I do this? This should do the trick ... at an index in Firestore? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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628 views

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firebase - How can I update more than 500 docs in Firestore using Batch?

I'm trying to update a field timestamp with the Firestore admin timestamp in a collection with more than 500 ... docs are not being deleted. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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816 views

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firebase - Firestore get all docs and subcollections of root collection

Say I have this kind of structure A (collection): { a (doc): { name:'Tim', B (collection):{ b (doc): { color ... N is the depth of my tree :/. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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618 views

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firebase - Restricting Cloud Firestore to a specific domain

Is there a way to restrict Cloud Firestore (for hosting/web) to do CRUD operations with restrictions to one domain ... Google's firewall in it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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632 views

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firebase - How to get full downloadUrl from UploadTaskSnapshot in Flutter?

I correctly receive UploadTaskSnapshot, and the field downloadUrl contains an instance of Uri that parses download ... downloadUrl as strings? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

1 answer

firebase - Firestore security rules for public and private fields

As for security rules of Firebase Realtime Database, both public and private data can exist in the same tree using such as ... != null; } } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

1 answer

firebase - Send push notifications from server with FCM

Recently I asked a question on sending push notifications using GCM: Send push notifications to Android. Now that ... FCM? Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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823 views

1 answer

firebase - Firestore query by date range

I need the help to query long collection with date range. See the below example document. I wanna query startTime field using date range. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

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firebase - Firestore get documents where value not in array?

Is there a way to get all documents which array field does not contain one or more values, now there is ... like "array-not-contains"? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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609 views

1 answer

firebase - How do you force a Firestore client app to maintain a correct document count for a collection?

Firestore doesn't have a way to query for the size of a collection, so if a client app needs to know this value, ... rules. How can I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

firebase - What is the maximum length of an FCM registration ID token?

Working with the "new" Firebase Cloud Messaging, I would like to reliably save client device registration_id tokens ... characters to check for? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

1 answer

firebase - Are Callable Cloud Functions better than HTTP functions?

With the latest Firebase Update callable functions were introduced. My question is whether this new way is faster than ... to switch it up. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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