I am currently trying to retrieve login information from my Realtime DB in Firebase.
As an example, I want to detect whether the provided username already exists in the db.
Here is a code snippet I'm attemping to work with.
ref.child("Users").order_by_child("Username").equal_to("Hello").get()
It does not however work, and instead displays this message:
firebase_admin.exceptions.InvalidArgumentError: Index not defined, add ".indexOn": "Username", for path "/Users", to the rules
Is there something wrong with my code snippet or should I use a different alternative?
CodePudding user response:
As the error suggests, you need to add ".indexOn": "Username"
in your security rules as shown below:
{
"rules": {
"Users": {
".indexOn": "Username",
// ... rules
"$uid": {
// ... rules
}
}
}
}
Checkout the documentation for more information.