Getting specific key from Firebase in Framer

Question

im really new in coding so my question might be very easy. On image below you can see what i have in Firebase.

Here's what i have in my Firebase

In Framer im using this module and after writing this code:

response = (names) ->
    print names

firebase.get("/test/items",response,{orderBy: "$key"})

im getting something like this:

{-L8S1RLTU3P3Lb-PxtsF:{amount:24926, date:"25.3.2018", type:"c"}, -L8S1RTNNySP0quUICNt:{amount:23616, date:"25.3.2018", type:"c"}, -L8S1RYPmG8L_EkYV8Vd:{amount:37863, date:"25.3.2018", type:"b"}}

the problem is that i want to get only amount. When im trying to change $key to amount it gives me an error:

{error:"Index not defined, add ".indexOn": "amount", for path "/test/items", to the rules"}

I have a feeling that solution is very simple but i can't find it :(

Answer 1

Fields are not automatically indexed. Since you're trying to filter items by a field amount, you must define an index on that field. Following the documentation on defining indexes, it should look something like:

{
  "rules": {
    "test": {
      "items": {
        ".indexOn": ["amount"]
      }
    }
  }
}