Stream Firestore: Listen to a Document

[avinashboy]

Could we open the Firestore database as a stream to listen to a particular document?

[avinashboy]

If so, can you provide example code? Also, what does #define DATABASE_URL "URL" mean? Is it the URL for the Realtime Database or something else?

[avinashboy]

Yeah, I know that, but if I add these rules in the Realtime Database, the code shows me an error: Task: streamTask, Message: unauthorized, Code: 401.

If I remove the rule, it works.

realtime DB:

{
  "rules": {
    ".read": "auth !== null",
    ".write": "auth !== null",
  }
}

OUTPUT:

16:39:06.999 -> Connecting to Wi-Fi....
16:39:08.201 -> Connected with IP: 192.168.1.102
16:39:08.201 -> 
16:39:08.201 -> Firebase Client v1.4.10
16:39:08.201 -> Initializing app...
16:39:08.201 -> User UID: 
16:39:08.620 -> Debug task: streamTask, msg: Connecting to server...
16:39:08.620 -> Error task: streamTask, msg: unauthenticate, code: -106
16:39:08.620 -> Event task: authTask, msg: authenticating, code: 7
16:39:08.620 -> Debug task: authTask, msg: Connecting to server...
16:39:08.620 -> Event task: authTask, msg: auth request sent, code: 8
16:39:09.774 -> Event task: authTask, msg: auth response received, code: 9
16:39:09.808 -> Debug task: authTask, msg: Terminating the server connection...
16:39:09.808 -> Event task: authTask, msg: ready, code: 10
16:39:09.808 -> Authentication Information
16:39:09.808 -> User UID: 44A0kS18L2eyDWnPuG9hmq4tHSW2
16:39:13.618 -> ----------------------------
16:39:13.618 -> task: streamTask
16:39:13.618 -> event: put
16:39:13.618 -> path: /
16:39:13.618 -> data: h
16:39:13.618 -> type: 5

[mobizt]

In the docu link above, have you read this?

Visit Understand Firebase Realtime Database Security Rules to learn more about security rules.

[avinashboy]

Realtime Database > Rules

Working ✅

{
  "rules": {
    ".read": "auth !== null",
    ".write": "auth !== null",
  }
}

Not working ❌

{
  "rules": {
      "$user_id": {
        "setting": {
          ".read": "auth !== null",
          ".write": "auth !== null && auth.uid === $user_id"
        }      
      }      
   }
}

[mobizt]

This is not community forum for Firebase usage unless the Firebase REST API Client library repository.

You should ask such question in stackoverflow or Firebase community forum.

[avinashboy]

Thanks, man! It works. My mistake—I made a spelling error in the database path in the rule, which is why the authentication failed with a 401 error.