How do I check the status of nominations for a staking account?

Question

I've used await api.query.staking.nominators(address) but that just returns something like:

{
    "result": {
        "targets": [
            "{nominatorId1}",
            "{nominatorId2}"
        ],
        "submittedIn": 4957,
        "suppressed": false
    }
}

This is useful but I don't know the statuses of each of them. Thank you!

Answer 1

Nominators active in a specific era -

const VALIDATOR = "1..."
const NOMINATORS = ["1...", "1..."]

const opt_era_info = await api.query.staking.activeEra()
const val_exposure = await api.query.staking.erasStakers(
  opt_era_info.unwrap().index,
  VALIDATOR
)

console.log(
  val_exposure.others
    .filter(o =>
      NOMINATORS.some(n =>
        o.who.eq(n)
      )
    )
    .map(n =>
      `${n.who.toString()} => ${n.value.toString()}`
    )
    .join("\n")

)

Those inactive are the reverse, not in a specific era.