inverse rels

adapters.subscription\.js

import RESTAdapter from 'ember-data/adapters/rest';

export default class SubscriptionAdapter extends RESTAdapter {}

adapters.tenant\.js

import RESTAdapter from 'ember-data/adapters/rest';

export default class TenantAdapter extends RESTAdapter {}

controllers.application\.js

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

export default class ApplicationController extends Controller {
  @inject store;
  
  @action
  push() {
    pushPayload(this.store, 'subscription', {
      subscription: {
        id: 2,
        tenant: 1 
      },
      tenant: {
        id: 1
      }
    });
  }
}



















































// An alternative to store.pushPayload() that supports sideloaded records
// See: https://api.emberjs.com/ember-data/3.18/classes/MinimumSerializerInterface/methods?anchor=normalize%20%5BOPTIONAL%5D
export function pushPayload(store, modelName, rawPayload) {
  const ModelClass = store.modelFor(modelName);
  const serializer = store.serializerFor(modelName);
  const jsonApiPayload = serializer.normalizeResponse(store, ModelClass, rawPayload, null, 'query');

  return store.push(jsonApiPayload);
}

models.subscription\.js

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


export default class extends Model {
  @belongsTo('tenant', {
    async: false,
    inverse: 'subscription'
  }) tenant;
}

models.tenant\.js

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


export default class extends Model {
  @belongsTo('subscription', {
    async: false,
    inverse: 'tenant'
  }) subscription;
}

routes.application\.js

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

export default class extends Route {
  @inject store;
  
  beforeModel() {
    pushPayload(this.store, 'tenant', {
      tenant: {
        id: 1,
        subscription: 1
      },
      subscription: {
        id: 1
      }
    });
  }
     
  setupController(controller, model) {
    super.setupController(...arguments);
    controller.tenant = this.store.peekRecord('tenant', 1);
    controller.subscription = this.store.peekRecord('subscription', 1);
    controller.tenants = this.store.peekAll('tenant');
    controller.subscriptions = this.store.peekAll('subscription');
  }
}
























// An alternative to store.pushPayload() that supports sideloaded records
// See: https://api.emberjs.com/ember-data/3.18/classes/MinimumSerializerInterface/methods?anchor=normalize%20%5BOPTIONAL%5D
export function pushPayload(store, modelName, rawPayload) {
  const ModelClass = store.modelFor(modelName);
  const serializer = store.serializerFor(modelName);
  const jsonApiPayload = serializer.normalizeResponse(store, ModelClass, rawPayload, null, 'query');

  return store.push(jsonApiPayload);
}

serializers.subscription\.js

import RESTSerializer from 'ember-data/serializers/rest';

export default class SubscriptionSerializer extends RESTSerializer {}

serializers.tenant\.js

import RESTSerializer from 'ember-data/serializers/rest';

export default class TenantSerializer extends RESTSerializer {}

styles.app\.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

small {
  color: gray 
}

templates.application\.hbs

<p>
  <b>Note:</b>
  Play with <code>inverse</code> in the models to understand how this works
</p>

<hr />

<dl>
  <dt>
    Tenant 1 ID:
  </dt>
  <dd>
    {{this.tenant.id}}
  </dd>
  <dt>
    Tenant 1's subscription ID
    <small>(aka the 'current' subscription)</small>
  </dt>
  <dd>
    {{this.tenant.subscription.id}}
  </dd>
  <dt>
    Tenant 1's subscription tenant ID
    <small>(aka the 'current' subscription's tenant)</small>
  </dt>
  <dd>
    {{this.tenant.subscription.tenant.id}}
  </dd>
  <dt>
    Subscription 1 ID
    (aka the original subscription)
  </dt>
  <dd>
    {{this.subscription.id}}
  </dd>
</dl>

<br><br>

<button type="button" {{on "click" this.push}}>
  Push new subscription
</button>


<br><br>

All tenants ID:<br>

<ul>
{{#each this.tenants as |tenant|}}
  <li>{{tenant.id}}</li>
{{/each}}
</ul>

<br><br>

All subscriptions ID:<br>


<ul>
{{#each this.subscriptions as |subscription|}}
  <li>{{subscription.id}}</li>
{{/each}}
</ul>

twiddle\.json

{
  "version": "0.17.1",
  "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/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.18.0"
  }
}