Filtered paginated list with firebase

Question

I\'m trying to make a paginated filtered list with firebase and swift (but feel free to answer with the programming language that you like the most) without filter the retrieved

Answer 1

If I recall correctly, you can pass in the key of the first item to return as a second argument to queryStarting. From the documentation (emphasis mine):

queryStartingAtValue:childKey: is used to generate a reference to a limited view of the data at this location. The FIRDatabaseQueryinstance returned by queryStartingAtValue:childKey will respond to events at nodes with a value greater than startValue, or equal to startValue and with a key greater than or equal to childKey.

So in code that would then be:

matchesRef
    .queryOrdered(byChild: "users/user-1")
    .queryStarting(atValue: "ok", childKey: "<last-fetched-user-id>")
    .queryLimited(toFirst: 5)
    .observe(.value, with: { snapshot in