Save only when model changes?

Ember Data
1

Hello,

In my router I am trying to save the elements in an array, but I only want to do that if the underlying model has changed.

import Ember from 'ember';

export default Ember.Route.extend({
  
  model(){
    return Ember.RSVP.hash({
      author : this.modelFor('account').author,
      countries : this.modelFor('account').countries,
      regions : this.modelFor('account').regions
    });
  },

  setupController(controller){
    this._super(...arguments);

    let authorsCollection = this.modelFor('account.company-info').author;
    controller.set('companys', authorsCollection.filter(function (item) {
      return item.get('Type.TypeId') === 2;
      })
    );

    controller.set('inInformationComplete', this.modelFor('account.company-info').authors.get('inInformationComplete'));
  },

  actions : {
    submit(isValid){
      let companys = this.controller.get('companys');
      companys.forEach(function(item){
        item.save();
      });
      console.log("in route isValid : " + isValid);
    }
  }
});

//

So here can I save companys.forEach(function(item){ the item only when something has changed. Should that logic be in the adapter?