Reflexive Rebinding Example (Push/Remove Object)

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
		moveFolder(folder, currentParent) {
      const newParent = this.get('model.parentFolders').rejectBy('name', currentParent.get('name'))[0];
      console.log(newParent);
			folder.set('parent', newParent);
    }
  }
});

models.folder.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

import DS from 'ember-data';

export default Model.extend({
  name: attr('string'),
  parent: belongsTo('folder', { inverse: 'children' }),
  children: hasMany('folder', { inverse: 'parent' })
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
   	const parentOne = this.store.createRecord('folder', {
      name: 'Parent One'
    });
    const parentTwo = this.store.createRecord('folder', {
      name: 'Parent Two'
    });
    
    const childOne = this.store.createRecord('folder', {
      name: 'Child One',
      parent: parentOne
    });
        
    const childTwo = this.store.createRecord('folder', {
      name: 'Child Two',
      parent: parentOne
    });
        
    const childThree = this.store.createRecord('folder', {
      name: 'Child Three',
      parent: parentOne
    });
        
    const childFour = this.store.createRecord('folder', {
      name: 'Child Four',
      parent: parentOne
    });
    
    const parentFolders = [parentOne, parentTwo];
    
    return {
      parentFolders
    }
  }
});

templates.application.hbs

<h1>Reflexive Rebinding Example</h1>

With reflexive relationships, pushObject and removeObject aren't needed.

{{#each model.parentFolders as |folder|}}
 <h3>Folder: {{folder.name}}</h3>
 <ul>
 {{#each folder.children as |childFolder|}}
   <li>
   {{childFolder.name}} <button {{action 'moveFolder' childFolder folder}}>Move</button>
   </li>
 {{/each}}
 </ul>
{{/each}}

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}