How do I communicate the form parameters from the template to the route in ember.js?

I have a form like this in a template:

<form {{action 'add' on='submit'}}>

<label for="name">Name</label>
{{input value=name placeholder='Enter name' required="required"}}
</form>

Then I have the following route:

import Ember from 'ember';

export default Ember.Route.extend({
    actions: {
        add: function() {
            alert(this.get('name'));
        }
    }
});

The alert is fired, but the output is "undefined". I tried to create a model in the route, but it didn't help. What am I missing to get the alert to show the string I type in the form? I don't want to use a controller, since controllers are discouraged.