无法过滤对象数组中具有布尔值true的id

我正在尝试过滤那些在

isPaymentCompleted: true

arr_object

我已经尝试了很多次，但仍然无法弄清楚如何解决这个问题。请任何人帮助我

这是我的数据库模式的图像

我只想要记录 id，而不是内部数组对象 id。

const obj1 = {
  _id: "4fkdjvcdvdvdfv",
  user: "fcnjdjkriinc",
  timeOfHolding: "6months ",
  startedDate: "2023-03-03",
  isSchemeCompleted: false,
  arr_object: [
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvffkdccedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvffvfckedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvfcdffkedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvvfddffkedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvrvgrcvffkedmkn",
      isPaymentComplete: false,
    },
  ]
}

const obj2 = {
  _id: "4fkdjvcdvdvdfv",
  user: "fcnjdjkriinc",
  timeOfHolding: "6months ",
  startedDate: "2023-03-03",
  isSchemeCompleted: false,
  arr_object: [
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvffkdccedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvffvfckedmkn",
      isPaymentComplete: false,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvfcdffkedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvcvvfddffkedmkn",
      isPaymentComplete: true,
    },
    {
      amount: 5000,
      deals: null,
      date_paid: "2023-05-11T18:30:00",
      _id: "3434fdvrvgrcvffkedmkn",
      isPaymentComplete: false,
    },
  ]
}

const filterArr = (arr) => {
  let tempArr = [];
  let count = 0;
  for (let i=0; i<arr?.arr_object?.length; i++) {
    const obj = arr?.arr_object;
    if (!obj[i].isPaymentComplete) count++;
  }
  if (count === 1) {
    tempArr = arr?.arr_object?.map((obj) => obj._id);
  }
  return tempArr;
}

console.log(filterArr(obj1));
console.log(filterArr(obj2));

// In case you want user id the filterArr function would be like this

const filterArr = (arr) => {
  let count = 0;
  for (let i=0; i<arr?.arr_object?.length; i++) {
    const obj = arr?.arr_object;
    if (!obj[i].isPaymentComplete) count++;
  }
  if (count === 1) return arr?.user;
};