firebase

问题 I have a bunch of documents that contain a few fields each. How can I write rules that only apply to a specific field in each document? For example, if my documents looked like this: { "displayName": "John Doe", // read and write "accessLevel": 3 // read only } How could I make it so that you can Read display name and access level Write to the display name Not write to the access level I've gone through a lot of videos and Firestore docs and haven't found anything that shows how you would

问题 I have a bunch of documents that contain a few fields each. How can I write rules that only apply to a specific field in each document? For example, if my documents looked like this: { "displayName": "John Doe", // read and write "accessLevel": 3 // read only } How could I make it so that you can Read display name and access level Write to the display name Not write to the access level I've gone through a lot of videos and Firestore docs and haven't found anything that shows how you would

问题 I have this .htaccess for a PWA Options -MultiViews RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^ index.html [QSA,L] I want to migrate the app to firebase, basically what it does is let's say I shared this link example.com/pwa/giftLink He gets redirected to PWA example.com/pwa And the PWA redirects him to giftLink . I don't want to do it via code, I prefer doing it via firebase.json 回答1: In Firebase Hosting rewrites, the equivalent would be: "hosting": { // ... // Add the

问题 Working with cloud firestore its always good to keep in mind about count of document read. I am working on an inventory app in which bill is getting generated for the list of products along with other details. Everything is working fine except the update of arraylist in the bill. I am able to insert the arraylist of product along with other details in the bill but i am not able to update the arraylist later. Whenever i try to insert more arraylist into the document, old arraylist get deleted.

问题 Working with cloud firestore its always good to keep in mind about count of document read. I am working on an inventory app in which bill is getting generated for the list of products along with other details. Everything is working fine except the update of arraylist in the bill. I am able to insert the arraylist of product along with other details in the bill but i am not able to update the arraylist later. Whenever i try to insert more arraylist into the document, old arraylist get deleted.

问题 I have a firestore collection called letters which holds a public letter from users. In my app, I am using pagination to limit the results to 20 when they go to public letters screen . My concern is that this would work fine from within the app but if some malicious user query the database from let's say postman then I will be billed heavily for all those reads. I have all security rules in place like the user should be authenticated but this needs to be public collection so I can't think of

问题 I have a firestore collection called letters which holds a public letter from users. In my app, I am using pagination to limit the results to 20 when they go to public letters screen . My concern is that this would work fine from within the app but if some malicious user query the database from let's say postman then I will be billed heavily for all those reads. I have all security rules in place like the user should be authenticated but this needs to be public collection so I can't think of

问题 I have a firestore collection called letters which holds a public letter from users. In my app, I am using pagination to limit the results to 20 when they go to public letters screen . My concern is that this would work fine from within the app but if some malicious user query the database from let's say postman then I will be billed heavily for all those reads. I have all security rules in place like the user should be authenticated but this needs to be public collection so I can't think of

问题 I'm using Python 2.7.9 on Linux and I am following Google's example on Google-Cloud Server SDK. My goal is to upload an image to Google Cloud Platform, but I'm getting the error below. File "/home/pi/test.py", line 15, in <module> zebraBlob.upload_from_filename(filename='/home/pi/Pictures/testimg.jpg') AttributeError: 'NoneType' object has no attribute 'upload_from_filename' Code: from firebase import firebase from google.cloud import storage import os firebase = firebase.FirebaseApplication(

问题 I've played around with the code for a while now. I'm grabbing data from Firebase and populating a list of objects from that data onto this UserProfile page. I just want it to work so that when I go on the profile page, a list of their items is listed there. The problem is that with this version of the code I have to click on the profile link twice for the items to show up, but the display name shows up fine. I know setState is asynchronous. I've tried setting the state in a callback in