Ember Data: model.foo vs .foo in template

What is the reason we sometimes use model.foo and other times just write.foo in our templates? Is it possible to make it more consistent so that I can always write .foo instead of model.foo?

For example i have two templates. One for adding a new client and one for editing a existing client.

Edit template

<form>
  <section class="form-section">
    <div class="left">
      
    </div>
  </section>
  <button  class="button" > Update client </button>
</form>

And the add new template

  <form>
    <section class="form-section">
      <div class="left">
        
      </div>
    </section>
<button  class="button"> Add client </button>
</form>

Corresponding routes

Edit route

import Ember from 'ember';
export default Ember.Route.extend({
  model(params) {
    return this.store.findRecord('client', params.client_id);
  },
});

New route

import Ember from 'ember';

export default Ember.Route.extend({

});