https://stackoverflow.com/questions/44606056/ember-parent-child-component-how-to-avoid-unnecessary-life-cycle-hook-from-trig

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  name:'mycomp',  
  init(){
    this._super(...arguments);
    console.log(' init mycomponent');
  },
  didReceiveAttrs(){
     console.log('didReceiveAttrs mycomponent');
  },
  didUpdateAttrs(){
     console.log('didUpdateAttrs mycomponent');
  },
  willUpdate(){
     console.log('willUpdate mycomponent');
  },
  didInsertElement(){
     console.log('didInsertElement mycomponent');
  },
  didUpdate(){
     console.log('didUpdate mycomponent');
  },
  willRender(){
     console.log('willRender mycomponent');
  },
  didRender(){
    console.log('didrender mycomponent');
  },
  actions:{
    toChange(){
      this.set('name','ChangedInMyComp '+new Date().toISOString());
    }
  }
});

components.my-component2.js

import Ember from 'ember';

export default Ember.Component.extend({
  name:'mycomp2',  
  cities: ['Barcelona', 'London', 'New York', 'Porto'],
  destination: 'London',
  init(){
    this._super(...arguments);
    console.log(' init mycomponent2');
  },
  didReceiveAttrs(){
     console.log('didReceiveAttrs mycomponent2');
  },
  didUpdateAttrs(){
     console.log('didUpdateAttrs mycomponent2');
  },  
  willUpdate(){
     console.log('willUpdate mycomponent2');
  },
  willRender(){
     console.log('willRender mycomponent2');
  },
  didUpdate(){
     console.log('didUpdate mycomponent2');
  },
  didInsertElement(){
     console.log('didInsertElement mycomponent2');
  },
  didRender(){
    console.log('didrender mycomponent2');
  },
  actions:{
    toChange(){
      this.set('name','ChangedInMyComp '+new Date().toISOString());
    },
    chooseDestination(city) {
      this.set('destination', city);
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({  
});

templates.application.hbs

<div id="ember-basic-dropdown-wormhole"></div>
<br>
{{#my-component as |name toChange|}}
 <button {{action toChange}}> 1 - {{name}}</button>
 
 {{#my-component2 as |name toChange|}}
  <button {{action toChange}}> 2 - {{name}}</button>
 {{/my-component2}}

{{/my-component}}

<br>
{{outlet}}
<br>

templates.components.my-component.hbs

{{yield name (action 'toChange')}}

templates.components.my-component2.hbs

{{#power-select
  selected=destination
  options=cities
  onchange=(action "chooseDestination")
  as |name|
}}
  {{name}}
{{/power-select}}
{{yield name (action 'toChange')}}

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-power-select": "1.8.1"
  }
}