Bootstrap Changeset Form

controllers.application\.js

import Controller from '@ember/controller';
import { tracked } from '@glimmer/tracking';
import { Changeset } from 'ember-changeset';
import { action } from '@ember/object';
import FormValidator from '../validators/form';
import lookupValidator from 'ember-changeset-validations';

export default class ApplicationController extends Controller {
  @tracked formModel = { name: null, foo: null };

  constructor() {
    super(...arguments);
    this.changeset = Changeset(this.formModel, lookupValidator(FormValidator), FormValidator);
  }
  
    @action
  async saveForm(changeset) {
    await changeset.validate();
  }
}

templates.application\.hbs

  <p>Changeset is valid? {{this.changeset.isValid}}</p>
  
  <h2>Errors</h2>
  <ul>
    {{#each-in this.changeset.error as |property error|}}
      <li>
      	{{property}}:
        {{#each error.validation as |message|}}
          {{message}}<br/>
        {{/each}}
      </li>
    {{else}}
    	No errors
    {{/each-in}}
  </ul>
  
  <BsForm @model={{this.changeset}} @onSubmit={{this.saveForm}} as |Form|>
    <Form.element @controlType="text" @property="name" as |el|>
      <el.control placeholder="Name" autofocus="true"/>
    </Form.element>
        <Form.element @controlType="text" @property="foo" as |el|>
      <el.control placeholder="Foo" />
    </Form.element>
    <BsButton @defaultText="Submit" @type="primary" @buttonType="submit" />
  </BsForm>

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": true,
    "_APPLICATION_TEMPLATE_WRAPPER": false,
    "_JQUERY_INTEGRATION": false
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-bootstrap": "3.1.3",
    "ember-bootstrap-changeset-validations": "3.0.0",
    "ember-changeset": "3.3.1",
    "ember-changeset-validations": "3.3.1"
    
  }
}

validators.form\.js

import { validatePresence, validateLength } from 'ember-changeset-validations/validators';
export default {
  name: [validatePresence(true), validateLength({ min: 4 })],
};