Firestore filtering by document reference

Question

I'm trying to filter by document reference in React Native. I'm using react-native-firebase. I want all documents whose field (DocumentReference) is in the provided array:

 const subscriber = firestore()
        .collection('strategyCounts')
        .where(
          'strategy',
          'in',
          user.strategies.map(strategy => {
            return strategy.path;
          }),
        ).onSnapshot(...)

user.strategies looks like this ["/strategies/id", "/strategy/id2"]

Answer 1

If you want to filter by document reference, you need to pass DocumentReference objects in the array. So something like:

  user.strategies.map(strategy => {
    return firestore().doc(strategy.path);
  }),

Or (slightly shorter):

  user.strategies.map(strategy => firestore().doc(strategy.path)),