source: Sources/frontend/src/app/all-courses/all-courses.component.html

<div class="parent-container">
  <h1>Сите курсеви</h1>
  <form class="example-form">
    <div class="list">
      <div *ngFor="let c of courses">
        <input type="checkbox" name="{{c.name}}"
               (change)="onChange({event : $event, id : {id : c.id}})"
               [checked]="checked({id : {id : c.id}})">
        <label>
          <p class="card">
            Курс: {{c.name}}
          </p>
        </label>
      </div>
    </div>
    <button (click)="submit()" type="button"><b>Submit</b></button>
  </form>
</div>