google-cloud-firestore

How to delete the array elements at index in firestore in javascript

由 ≯℡__Kan透↙ 提交于 2021-01-20 12:49:16
问题 var arr = [ "GKRLrcpSL2BmKx3BfvWj","fMwH404fweoFJJqyE5Nf" , "DTurwbw64CWw4WosUQtC" ] // arr.forEach((element) => { console.log(element); db.collection("Check").doc(element).get().then((docs) => { var data = docs.data(); var arr = data.fill; arr.forEach((item) => { if(item['check'] == 'a') { db.collection("Check").doc(element).update({ fill: firebase.firestore.FieldValue.arrayRemove('check') }).then((val) => {console.log("Updated")}) } }); }); }); I have a collection Check which consist of an

How to delete the array elements at index in firestore in javascript

由 不想你离开。 提交于 2021-01-20 12:48:44
问题 var arr = [ "GKRLrcpSL2BmKx3BfvWj","fMwH404fweoFJJqyE5Nf" , "DTurwbw64CWw4WosUQtC" ] // arr.forEach((element) => { console.log(element); db.collection("Check").doc(element).get().then((docs) => { var data = docs.data(); var arr = data.fill; arr.forEach((item) => { if(item['check'] == 'a') { db.collection("Check").doc(element).update({ fill: firebase.firestore.FieldValue.arrayRemove('check') }).then((val) => {console.log("Updated")}) } }); }); }); I have a collection Check which consist of an

How can I display all data from Firestore documents into html elements

由 一曲冷凌霜 提交于 2021-01-20 12:21:55
问题 I am designing a web page that will obtain data from my firestore collection and display each document with its corresponding fields Here is the code: <html> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Stations</title> <script src="https://www.gstatic.com/firebasejs/7.2.3/firebase-app.js"></script> <script src="https://www.gstatic.com/firebasejs

Firestore pagination by offset

由 流过昼夜 提交于 2021-01-20 12:11:07
问题 I would like to create two queries, with pagination option. On the first one I would like to get the first ten records and the second one I would like to get the other all records: .startAt(0) .limit(10) .startAt(9) .limit(null) Can anyone confirm that above code is correct for both condition? 回答1: Firestore does not support index or offset based pagination. Your query will not work with these values. Please read the documentation on pagination carefully. Pagination requires that you provide

Firestore pagination by offset

由 ε祈祈猫儿з 提交于 2021-01-20 12:09:22
问题 I would like to create two queries, with pagination option. On the first one I would like to get the first ten records and the second one I would like to get the other all records: .startAt(0) .limit(10) .startAt(9) .limit(null) Can anyone confirm that above code is correct for both condition? 回答1: Firestore does not support index or offset based pagination. Your query will not work with these values. Please read the documentation on pagination carefully. Pagination requires that you provide

Firestore pagination by offset

由 ＊爱你＆永不变心＊ 提交于 2021-01-20 12:08:05
问题 I would like to create two queries, with pagination option. On the first one I would like to get the first ten records and the second one I would like to get the other all records: .startAt(0) .limit(10) .startAt(9) .limit(null) Can anyone confirm that above code is correct for both condition? 回答1: Firestore does not support index or offset based pagination. Your query will not work with these values. Please read the documentation on pagination carefully. Pagination requires that you provide

How can I call local Firebase Functions (in Emulator) from Flutter?

由 不想你离开。 提交于 2021-01-20 12:06:39
问题 I set up Cloud Functions in the local emulator. I wrote a few functions and tested them in the browser with the function emulator. Now I am trying to call these functions from my local Flutter app without deploying them. However, i cannot find a way to connect my Flutter App to the localhost API of the functions. Is there anyway to do that? 回答1: In steps: Import the package: import 'package:cloud_functions/cloud_functions.dart'; Create an instance: static final _functions = CloudFunctions

How can I call local Firebase Functions (in Emulator) from Flutter?

由 与世无争的帅哥 提交于 2021-01-20 12:06:09
问题 I set up Cloud Functions in the local emulator. I wrote a few functions and tested them in the browser with the function emulator. Now I am trying to call these functions from my local Flutter app without deploying them. However, i cannot find a way to connect my Flutter App to the localhost API of the functions. Is there anyway to do that? 回答1: In steps: Import the package: import 'package:cloud_functions/cloud_functions.dart'; Create an instance: static final _functions = CloudFunctions

How can I call local Firebase Functions (in Emulator) from Flutter?

由 大城市里の小女人 提交于 2021-01-20 12:05:51
问题 I set up Cloud Functions in the local emulator. I wrote a few functions and tested them in the browser with the function emulator. Now I am trying to call these functions from my local Flutter app without deploying them. However, i cannot find a way to connect my Flutter App to the localhost API of the functions. Is there anyway to do that? 回答1: In steps: Import the package: import 'package:cloud_functions/cloud_functions.dart'; Create an instance: static final _functions = CloudFunctions

What is the difference between Firebase Storage and Cloud Firestore/Realtime Database?

由 余生长醉 提交于 2021-01-20 11:55:38
问题 I have been using Google Firebase's Realtime Database, but want to be able to store more complex user-generated data like images, videos etc. As per the Firebase docs, they provide two other services: 'Firebase Storage' and 'Cloud Firestore'. Can someone please summarise what the difference is between the similarly named 'Storage' and 'Firestore'. 回答1: The products are not really comparable. They have almost nothing in common, except from the perspective of Firebase client, apps which are
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