CRUD - 업데이트 - Node.js SDK

// Open a transaction.
realm.write(() => {
  // Get a dog to update.
  const dog = realm.objects("Dog")[0];
  // Update some properties on the instance.
  // These changes are saved to the realm.
  dog.name = "Maximilian";
  dog.age += 1;
});

realm.write(() => {
  // Add a new person to the realm. Since nobody with ID 1234
  // has been added yet, this adds the instance to the realm.
  person = realm.create(
    "Person",
    { _id: 1234, name: "Joe", age: 40 },
    "modified"
  );
  // If an object exists, setting the third parameter (`updateMode`) to
  // "modified" only updates properties that have changed, resulting in
  // faster operations.
  person = realm.create(
    "Person",
    { _id: 1234, name: "Joseph", age: 40 },
    "modified"
  );
});

realm.write(() => {
  // Create someone to take care of some dogs.
  const person = realm.create("Person", { name: "Ali" });
  // Find dogs younger than 2.
  const puppies = realm.objects("Dog").filtered("age < 2");
  // Loop through to update.
  for (const puppy of puppies) {
    // Give all puppies to Ali.
    puppy.owner = person;
  }
});