Realm Web & Atlas Device Sync を使い始める（プレビュー）

import Realm, { App } from "realm";

const app = new App({ id: "<your-app-id>" });

const credentials = Realm.Credentials.anonymous();
await app.logIn(credentials);

const TaskSchema = {
  name: "Task",
  properties: {
    _id: "int",
    name: "string",
    status: "string?",
    owner_id: "string?",
  },
  primaryKey: "_id",
};

const realm = await Realm.open({
  schema: [TaskSchema],
  sync: {
    user: app.currentUser,
    flexible: true,
    // Define initial subscriptions to start syncing data as soon as the
    // realm is opened.
    initialSubscriptions: {
      update: (subs, realm) => {
        subs.add(
          // Get objects that match your object model, then filter them by
          // the `owner_id` queryable field
          realm.objects(Task).filtered(`owner_id == "${anonymousUser.id}"`)
        );
      },
    },
  },
});

const realm = await Realm.open({
  schema: [TaskSchema]
});

const allTasks = realm.objects(Task);
// Add a couple of Tasks in a single, atomic transaction.
realm.write(() => {
  realm.create(Task, {
    _id: 1,
    name: "go grocery shopping",
    status: "Open",
  });
  realm.create(Task, {
    _id: 2,
    name: "go exercise",
    status: "Open",
  });
});
const task1 = allTasks.find((task) => task._id == 1);
const task2 = allTasks.find((task) => task._id == 2);
realm.write(() => {
  // Modify an object.
  task1!.status = "InProgress";
  // Delete an object.
  realm.delete(task2);
});

// Query for specific obect using primary key.
const specificTask = realm.objectForPrimaryKey(Task, 0);
// Query realm for all instances of the "Task" type.
const tasks = realm.objects(Task);
// Filter for all tasks with a status of "Open".
const openTasks = tasks.filtered("status = 'Open'");
// Sort tasks by name in ascending order.
const tasksByName = tasks.sorted("name");

// Close the realm.
realm.close();