Destroy record

adapters.foo\.js

import RESTAdapter from '@ember-data/adapter/rest';
import { A as emberA } from '@ember/array';

// Foos on the Server

let foos = emberA([{
 id: '1',
 name: 'Foo 1'
}, {
  id: '2',
  name: 'Foo 2'
}])

export default RESTAdapter.extend({
  ajax(path, method) {       
    if (method === 'GET') {
      return { foos }
    }
    
    if (method === 'DELETE') {
      const [id] = path.match(/\d+/);
      const foo = foos.find(foo => foo.id === id);
      
      foos.removeObject(foo);
      
      return null 
    }
  } 
})

controllers.application\.js

import Controller from '@ember/controller';
import { action } from '@ember/object';

export default class ApplicationController extends Controller {
  @action
  destroyFoo(foo) {
    foo.destroyRecord();
  }
  
  @action
  reloadModel() {
    this.refresh();
  }
}

models.foo\.js

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

export default class extends Model {
  @attr() name;
}

routes.application\.js

import Route from '@ember/routing/route';
import { inject } from '@ember/service';

export default Route.extend({
  store: inject(),
  
  model() {
    return this.store.query('foo', { q: 'test' }); 
  },
  
  setupController(controller) {
    controller.refresh = this.refresh.bind(this);
  }
});

templates.application\.hbs

{{#each @model as |foo|}}
  {{foo.id}} - {{foo.name}}
  {{if foo.isDeleted "(deleted)"}}
  
  <button
    type="button"
    {{on "click" (fn this.destroyFoo foo)}}
  >
    Destroy
  </button>
  
  <br>
{{/each}}


<br><br>

<button {{action this.reloadModel}}>
  reload model
</button>

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.16.2"
  }
}