Firebase Permission Denied

Question

I m relatively new to coding and am having trouble   I have this code to send data to firebase  app userid   app user uid  var userRef   app dataInfo child app users    var useridRef   userRef child app userid    useridRef set     locations        theme        colorScheme        food             However  I keep getting the error      FIREBASE WARNING  set at  users  GoogleID  failed  permission denied        2016-05-23 22 52 42 707 firebase js 227 Uncaught  in promise  Error  PERMISSION DENIED  Permission denied        When I try to look this up it talks about rules for Firebase  which seems to be in a language that I haven t learned yet  or it is just going over my head   Can someone explain what is causing the issue  I thought it was that I was asking for it to store email and user display name and you just weren t allowed to do this  but when I took those out I still had the same problem  Is there a way to avoid this error without setting the rules  or are rules something I can teach myself how to write in a day  or am I just way out of my league   Thanks for any help

User · Answer

Open firebase  select database on the left hand side  Now on the right hand side  select  Realtime database  from the drown and change the rules to        quot rules quot          quot  read quot   true       quot  write quot   true

User · Answer

By default the database in a project in the Firebase Console is only readable writeable by administrative users  e g  in Cloud Functions  or processes that use an Admin SDK   Users of the regular client-side SDKs can t access the database  unless you change the server-side security rules   You can change the rules so that the database is only readable writeable by authenticated users       quot rules quot          quot  read quot    quot auth    null quot        quot  write quot    quot auth    null quot         See the quickstart for the Firebase Database security rules  But since you re not signing the user in from your code  the database denies you access to the data  To solve that you will either need to allow unauthenticated access to your database  or sign in the user before accessing the database  Allow unauthenticated access to your database The simplest workaround for the moment  until the tutorial gets updated  is to go into the Database panel in the console for you project  select the Rules tab and replace the contents with these rules       quot rules quot          quot  read quot   true       quot  write quot   true        This makes your new database readable and writeable by anyone who knows the database s URL  Be sure to secure your database again before you go into production  otherwise somebody is likely to start abusing it  Sign in the user before accessing the database For a  slightly  more time-consuming  but more secure  solution  call one of the signIn    methods of Firebase Authentication to ensure the user is signed in before accessing the database  The simplest way to do this is using anonymous authentication  firebase auth   signInAnonymously   catch function error         Handle Errors here    var errorCode   error code    var errorMessage   error message                And then attach your listeners when the sign-in is detected firebase auth   onAuthStateChanged function user      if  user           User is signed in      var isAnonymous   user isAnonymous      var uid   user uid      var userRef   app dataInfo child app users            var useridRef   userRef child app userid            useridRef set         locations   quot  quot         theme   quot  quot         colorScheme   quot  quot         food   quot  quot               else          User is signed out

User · Answer

I was facing similar issue and found out that this error was due to incorrect rules set for read write operations for real time database  By default google firebase nowadays loads cloud store not real time database  We need to switch to real time and apply the correct rules     As we can see it says cloud Firestore not real time database  once switched to correct database apply below rules         rules              read   true           write   true

User · Answer

Another solution is to actually create or login the user automatically if you already have the credentials handy  Here is how I do it using Plain JS   function loginToFirebase callback        let email    xx xx com       let password    xxxxxxxxxxxxxx       let config                 apiKey   xxx           authDomain   xxxxx firebaseapp com           projectId   xxx-xxx           databaseURL   https   xxx-xxx firebaseio com           storageBucket   gs   xx-xx appspot com               if   firebase apps length                firebase initializeApp config              let database   firebase database        let storage   firebase storage         loginFirebaseUser email  password  callback      function loginFirebaseUser email  password  callback        console log  Logging in Firebase User         firebase auth   signInWithEmailAndPassword email  password           then function                          if  callback                                callback                                      catch function login error                        let loginErrorCode   login error code              let loginErrorMessage   login error message               console log loginErrorCode               console log loginErrorMessage                if  loginErrorCode      auth user-not-found                                 createFirebaseUser email  password  callback                               function createFirebaseUser email  password  callback        console log  Creating Firebase User         firebase auth   createUserWithEmailAndPassword email  password           then function                          if  callback                                callback                                      catch function create error                        let createErrorCode   create error code              let createErrorMessage   create error message               console log createErrorCode               console log createErrorMessage

User · Answer

OK  but you don t want to open the whole realtime database   You need something like this          Visit https   firebase google com docs database security to learn more about security rules        rules           read    auth uid   null         write    auth uid   null          or        rules          users             uid               write     uid     auth uid

User · Answer

Go to the  Database  option you mentioned    There on the Blue Header you ll find a dropdown which says Cloud Firestore Beta Change it to  Realtime database  Go to Rules and set  write  read both to true   Copied from here

User · Answer

Go to database  next to title there are 2 options  Cloud Firestore  Realtime database Select Realtime database and go to rules Change rules to true

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