ember-component-interaction

components.my-dropdown.js

import Ember from 'ember';

export default Ember.Component.extend({
  change(e){
    //alert(e.target.value);
    this.set('value', e.target.value)
  },
  
  actions:{
	
  	didDrop(e){
			//this.send('change',e.target.value)
		}
	}
});

components.my-form.js

import Ember from 'ember';
import EmberObject, { computed } from '@ember/object';

export default Ember.Component.extend({
  firstName:'',
  lastName:'',
  middleName:'',
  genders:[
  { name: 'Male' },
  { name: 'Female' },
    { name: 'Non-binary' }
],
  titles:[
  { name: 'Mr' },
  { name: 'Ms' },
    { name: 'They' }
],
  
  genderDefault:computed('title', function() {
    if(this.title==='Mr'){
    	return "Male";
    } else if (this.title==='Ms'){
      return "Female";
    } else if (this.title==='They'){
      return "Non-binary";
    }
  })
  
  
});

components.my-input.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  change(e){
    //alert(e.target.value);
    this.set('value', e.target.value)
  },
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  name: ""
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

form {
 height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

label{
 display: block; 
}

.names{
  display:flex;
  justify-content:space-between 
}

ul {
  list-style: none;
}

input {
	width: auto;
}

templates.application.hbs

{{outlet}}
<MyForm @name={{this.name}}></MyForm>

templates.components.my-dropdown.hbs

{{yield}}
<label>{{this.label}}</label>
<select disabled={{this.disabled}}>
 {{#each this.options as |item|}}
   <option value={{item.name}} selected={{eq sOption item.name}}>{{item.name}}</option>
  {{/each}}
</select>

templates.components.my-form.hbs

{{yield}}
<form>
		<MyDropdown @label="Title" @options={{this.titles}} @value={{this.title}}></MyDropdown>
  <div class="names">
    <MyInput @type="text" @value={{this.firstName}} @label="First Name"></MyInput>
    <MyInput @type="text" @value={{this.middleName}} @label="Middle Name"></MyInput>
    <MyInput @type="text" @value={{this.lastName}} @label="Last Name"></MyInput>
  </div>
  	<MyInput @type="date" @value={{this.dob}} @label="Date of Birth"></MyInput>
  <div class="names">
    <MyInput @type="email" @value={{this.email}} @label="Email"></MyInput>
    <MyInput @type="number" @value={{this.phone}} @label="Phone"></MyInput>
  </div>
  	<MyDropdown @label="Gender" @sOption={{this.genderDefault}}  @options={{this.genders}} @disabled=true ></MyDropdown>
  
  <MyInput @type="submit" @value='Submit'></MyInput>
</form>

<ul>
  <li>{{this.title}} {{this.firstName}} {{this.lastName}}</li>
  <li>{{this.dob}}</li>
  <li>{{this.email}} {{this.phone}}</li>
  <li></li>
  <li>{{this.genderDefault}}</li>
</ul>

templates.components.my-input.hbs

{{yield}}
<label>{{this.label}}</label>
<input type={{this.type}} value={{this.value}}>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "bootstrap":"https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2",
    "ember-truth-helpers": "1.3.0"
  }
}