当模型由多个对象组成时，如何将对象保存在ember数据中？

// app/models/person.js
import DS from 'ember-data';

export default DS.Model.extend({
  name: DS.attr('string'),
  addresses: DS.hasMany('address')
});

// app/models/address.js
import DS from 'ember-data';

export default DS.Model.extend({
  street: DS.attr('string'),
  city: DS.attr('string'),
  person: DS.belongsTo('person')
});

// app/controllers/my-controller.js
import Controller from '@ember/controller';
import { inject as service } from '@ember/service';

export default Controller.extend({
  store: service(),

  actions: {
    savePerson() {
      let store = this.get('store');
      let person = store.createRecord('person', {
        name: 'John Doe'
      });

      let address1 = store.createRecord('address', {
        street: '123 Main St',
        city: 'New York'
      });

      let address2 = store.createRecord('address', {
        street: '456 Elm St',
        city: 'San Francisco'
      });

      person.get('addresses').pushObjects([address1, address2]);

      person.save().then(() => {
        console.log('Person saved successfully!');
      }).catch((error) => {
        console.error('Failed to save person:', error);
      });
    }
  }
});