Hack solution to updating Ember.Select with computed property created using defineProperty()

list-item-view.js

export default Ember.View.extend({
    didInsertElement: function(){
        var self = this;
        setTimeout(function(){
            self.get('controller.model').fixBindingsHack();
        }, 100);
    }
});

step-model.js

import BaseModel from "appkit/models/base-model";
export default BaseModel.extend({
    title:                  DS.attr('string'),
    order:                  DS.attr('number'),
    active:                 DS.attr('boolean'),
    step_type:              DS.attr('number'),
    step_type_label:        DS.attr('string'),
    model_name:             DS.attr('string'),

    record_workflow_segment_step_params: DS.hasMany('record-workflow-segment-step-param', {inverse: 'record_workflow_segment_step'}),
    record_workflow_segment:        DS.belongsTo('record-workflow-segment', {inverse:'record_workflow_segment_steps'}),

    dynamicPropertiesList:  Ember.A([]),

    setupExistingParams: function(){

        Ember.defineProperty(this, 'record_phase', Ember.computed('record_workflow_segment_step_params.[]', function(key, value){
            if( this.get('step_type').toString() !== "1" ){
                return undefined;
            }

            var param = this.get('record_workflow_segment_step_params').findBy('name', 'record_phase');
            if( !Ember.isNone( value ) && param )
            {
                param.set('value', value);
            }

            if( !Ember.isBlank(param.get("model_name")) )
            {
                return Ember.isNone(param.get('value')) ? null: this.store.find( param.get('model_name'), param.get('value') );
            }else{
                return param ? param.get('value').toString(): null;
            }
        }).property());

        this.get('dynamicPropertiesList').pushObject('record_phase');
        this.set('dynamicPropertiesExist', true);
    }.on('didLoad'),

    dynamicPropertiesExist: false,

    fixBindingsHack: function(){
        this.get('dynamicPropertiesList').forEach(function(item){
            if( !Ember.isBlank( this.get(item) ) )
            {
                var tmp = this.get(item);
                this.set(item, "1000000000000");
                this.set(item, tmp);
            }
            tmp = null;
        }, this);
    }
});

template.hbs

{{#each step in arrangedContent itemController="list-item-controller" itemView="list-item-view"}}
      <label>Select a phase to assign:</label>
      {{view Ember.Select
      classNames="form-control"
      content=phaseOptions
      optionLabelPath="content.title"
      optionValuePath="content.id"
      value=step.record_phase
      prompt="Select a phase to assign"
      }}
{{/each}}