filter hasMany relationship

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  	filteredModel: Ember.computed('model.[]', 'searchQuery', function() {
		let searchQuery	= this.get('searchQuery');
		
		if(searchQuery) {
      debugger
			return DS.PromiseArray.create({
			    promise: Ember.RSVP.filter(this.get('model').toArray(), entity => {;
			      return entity.get('assetIps').then( assetIps => {
              
			      	let res2 = assetIps.find( (assetIp) => {		

                let res = assetIp.get('ipNumber').toLowerCase().indexOf( searchQuery.toLowerCase() ) !== -1;
                			      		console.log('Searching IP between children', res);     		
                return res;
			      	});
              console.log('r', res2);
              return res2;
			      });
			    })
			  });
		} else {
			return this.get('model');
		}
	})
});

models.asset-ip.js

import DS from 'ember-data';

export default DS.Model.extend({
  ipNumber: DS.attr('string')
});

models.entity.js

import DS from 'ember-data';

export default DS.Model.extend({
 	assetIps: DS.hasMany('asset-ip'),
  name: DS.attr('string')
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
   this.store.push({
            data: [{
              id: 1,
              type: 'entity',
              attributes: {
                name: 'entity 1',
              },
              relationships: {}
            }]
          });
    let entity =  this.store.peekRecord('entity', 1);
    let ipAsset1 = this.store.createRecord('assetIp', {
  ipNumber: "127.0.0.1"
});
let ipAsset2 = this.store.createRecord('assetIp', {
  ipNumber: "127.0.0.2"
});
        
   entity.get('assetIps').pushObjects([ipAsset1, ipAsset2]);
 
    
    
    return this.store.peekAll('entity');
	},
});

templates.application.hbs

<br>
search ip {{input value=searchQuery}}
<br>
<br>
{{#each filteredModel as |entity|}}
	{{entity.name}}:
  <ul>
  	{{#each entity.assetIps as |assetIp|}}
  	<li>{{assetIp.ipNumber}}</li>
    {{/each}}
  </ul>
{{/each}}
<br>
<br>

twiddle.json

{
  "version": "0.7.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.3.2",
    "ember-data": "2.3.3",
    "ember-template-compiler": "2.3.2"
  }
}