cancel-type select

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  serializedReasonCode: undefined,
  
  actions: {
		reasonCodeChanged({ target }) {
      this.model.set('cancelType', target.value);
    },
    
    saveReasonCode(reasonCode) {
     this.set('serializedReasonCode', 
        JSON.stringify(reasonCode.serialize()), null, "\t");
    }
  }
});

helpers.eq.js

import Ember from 'ember';

export function eq([left, right]/*, hash*/) {
  return left == right;
}

export default Ember.Helper.helper(eq);

models.reason-code.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
import { belongsTo, hasMany } from 'ember-data/relationships';
import { computed } from '@ember/object';

export default Model.extend({
  cancelType: attr('number', { defaultValue: 1 }),
  cancelTypeName: computed('cancelType', 'cancelTypeCodes.[]', function() {
    let t = this.cancelTypeCodes.find(c => c.id == this.cancelType);
    return t ? t.name : 'None';
  }),
  cancelTypeCodes: computed(function() {
     return [
       { id: 0, name: 'None' },
       { id: 1, name: 'Pharmacy' },
       { id: 2, name: 'Customer' },
     ];
  }),
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({

   model() {
     return this.store.createRecord('reason-code');
   }
});

templates.application.hbs

<br>
<p>
Selected <em>ReasonCode's</em> cancelType is {{this.model.cancelTypeName}}
</p>
<select
  value={{this.model.cancelType}}
  onchange={{action "reasonCodeChanged"}}>
 {{#each this.model.cancelTypeCodes as | code |}}
   <option selected={{if (eq code.id this.model.cancelType) "selected"}} value={{code.id}}>
  	{{code.name}}
   </option>
 {{/each}}
</select>
<br>
<br>
<br>
<button onclick={{action "saveReasonCode" this.model}}> Save </button>
<p>
Serialized Output Just Befor XHR:

<code>
  <pre>
   {{this.serializedReasonCode}}
  </pre>
</code>
</p>

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",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}