Disable querying collection in Firebase Cloud Firestore with rules
Solution 1:
You can break read rules into get and list. Rules for get apply to requests for single documents, and rules for list apply to queries and requests for collections (docs).
match /users/{userId} {
//signed in users can get individual documents
allow get: if request.auth.uid != null;
//no one can query the collection
allow list: if false;
}
Solution 2:
Just allow get and you'll be good:
match /users/{userId} {
allow get;
}
Reference: https://firebase.google.com/docs/rules/rules-language#:~:text=Convenience%20methods-,read,-Any%20type%20of