New Input

components.input-addon.js

import Ember from 'ember';

export default Ember.Component.extend({

  classNames: ['input-addon']

});

components.input-text.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: 'label',
  
  wasFocused: false,
  
  focusOut() {
  	Ember.set(this, 'wasFocused', true);
  }
});

components.input-validation.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  shouldDisplayValidations: Ember.computed('wasFocused', function() {
  	return Ember.get(this, 'wasFocused');
  })
  
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'New Denali Input'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
{{#input-text label="Foo" as |f|}}
  {{f.input appName update=(action (mut appName))}}
  {{f.validation changeset attr}}
{{/input-text}}

templates.components.input-addon.hbs

{{yield}}

templates.components.input-text.hbs

{{#if label}}
  <span>
    {{label}}
  </span>
{{/if}}
{{yield (hash
  input=(component 'one-way-input')
  addon=(component 'input-addon')
  validation=(component 'input-validation' wasFocused=wasFocused)
)}}

templates.components.input-validation.hbs

{{#if shouldDisplayValidations}}
	Hi!
{{/if}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1",
    "ember-one-way-controls": "2.0.0"
  }
}