How to query firebase in readonly mode

Question

I have some data in firebase that I want to query. My firebase has default security settings which is readonly. However when I try to query the data as below

this.firestore.collection('myCollection').valueChanges().pipe().subscribe(x => {
  console.log;
});

this.firestore.collection('myCollection').get().subscribe(x => {
  console.log;
});

I do get an error Missing or insufficient permissions. As per my understating that should not be the case as I am just reading the data. Also I probably have to mention that I am using @angular/fire

Just for an experiment I did try to enable the write access to database and it works this way but I want to keep the readonly mode.

that is my rules:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if false;
    }
  }
}

Any ideas?

Answer 1

With

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if false;
    }
  }
}

you are not allowing readonly access, since it is equivalent to

....
allow read: if false;   // <- You deny any read here
allow write: if false;
....

---

You need to adapt your rules as follows:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read: if true;
      allow write: if false;
    }
  }
}

---

More info in the doc, including the video at the top of the doc.