Stackoverflow

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  someData:{
  	items: [
       		{
        fld1: "fld1-456",
        fld2: "fld2-456",
        Reasons: [
          {reason_id: "53", msg: "Reason 13"},
       		{reason_id: "34", msg: "Reason 2"}
        ]
      },
      {
        fld1: "fld1-123",
        fld2: "fld2-123",
        Reasons: [
          {reason_id: "33", msg: "Reason 1"},  
          {reason_id: "34", msg: "Reason 2"}
        ]
      }
    ]
  },
  someOtherData:{
  	items: [
       		{
        fld1: "fld1-456",
        fld2: "fld2-456",
        Reasons: [
          "Reason - 1",
       		"Reason - 2"
        ]
      },
      {
        fld1: "fld1-123",
        fld2: "fld2-123",
        Reasons: [
         	"Reason - 3",
          "Reason - 4"
        ]
      }
    ]
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}

<table width="50%">
        {{#each someData.items as |item|}}
            <tr> <!-- This one RENDERS -->
                <td width="25%"><span class="boldTxt">{{item.fld1}}</span></td>
                <td width="25%">{{item.fld2}}</td>
            </tr>
{{#each item.Reasons as |reason|}}          
                <tr> <!-- This one does not RENDER -->
                    <td>{{reason.reason_id}}</td>
                </tr>
            {{/each}}
        {{/each}}
    </table>
    
    <h2> Another format </h2>
    <table width="50%">
        {{#each someOtherData.items as |item|}}
            <tr> <!-- This one RENDERS -->
                <td width="25%"><span class="boldTxt">{{item.fld1}}</span></td>
                <td width="25%">{{item.fld2}}</td>
            </tr>
{{#each item.Reasons as |reason|}}          
                <tr> <!-- This one does not RENDER -->
                    <td>{{reason}}</td>
                </tr>
            {{/each}}
        {{/each}}
    </table>
<br>
<br>

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.1.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember-template-compiler.js"
  }
}