사용자 지정 사용자 데이터 - React Native SDK

import React, {useState, useEffect} from 'react';
import {useApp, useUser} from '@realm/react';
function ReadCustomUserData() {
  const user = useUser();
  const [customUserData, setCustomUserData] = useState();
  // Access current custom user data with `user.customData`
  function readCurrentCustomUserData() {
    setCustomUserData(user.customData);
  }
  // Refresh custom user data with `user.refreshCustomData()`
  async function refreshCustomUserData() {
    const data = await user.refreshCustomData();
    setCustomUserData(data);
  }
  // ...
}

import React, {useEffect} from 'react';
import {useApp, useUser} from '@realm/react';
function WriteCustomUserData() {
  const user = useUser();
  async function writeCustomUserData(favoriteColor: string) {
    const customUserDataCollection = user
      .mongoClient('mongodb-atlas')
      .db('custom-user-data-database')
      .collection('custom-user-data');
    const filter = {
      userId: user.id, // Query for the user object of the logged in user
    };
    const updateDoc = {
      $set: {
        // Set User ID if it's not already set
        userId: user.id,
        // Set the logged in user's favorite color
        favoriteColor,
      },
    };
    const options = {upsert: true};
    await customUserDataCollection.updateOne(filter, updateDoc, options);
    // Refresh custom user data once it's been updated on the server
    const customUserData = await user.refreshCustomData();
    console.log(customUserData);
  }
  // ...
}