CODEWITHSUNDEEP
firebasefirebase-realtime-database
Lloyd Banks
Lloyd Banks

Reputation: 36659

Firebase - Indexing Data Two Levels Deep

I have a Firebase data structure that looks like:

-messages
    -myFirstUsername
        -5-2-16 04:02:23 AM
            -message: 'messageOne',
            -direction: 'outgoing'
        -5-3-16 04:07:23 AM
            -message: 'messageTwo',
            -direction: 'outgoing'
    -mySecondUsername
        -5-4-16 04:02:23 AM
            -message: 'messageOne',
            -direction: 'outgoing'
        -5-5-16 04:02:23 AM
            -message: 'messageTwo',
            -direction: 'incoming'

I would like to index all data using the message and direction nested child keys. Since the username keys under the messages object are dynamic, I'll need to set up my index on the messages object itself.

Will the following rule set up indices two levels deep?

{
  "rules": {
    "messages": {
      ".indexOn": ["message", "direction"]
    }
  }
}

Upvotes: 1

Views: 2808

Answers (1)

Mathew Berg
Mathew Berg

Reputation: 28750

You can specify dynamic .indexOn like this:

{
    "rules" : {
        "messages" : {
            "$userId": {
                ".indexOn" : ["message", "direction"]
            }
        }
    }
}

I can't seem to find it in the new docs, but here's the old docs description: https://www.firebase.com/docs/security/api/rule/path.html

Upvotes: 6

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