title: Reactive forms nested component not working
body: <p>I have been trying to created nested reactive form components. I'm creating reusable input component for app inside reactive form. How to communicate with nested components in Reactive forms dynamically.</p>
  
  <p>I tired, But I'm getting error,</p>
  
  <blockquote>
    <p>formControlName must be used with a parent formGroup directive.  You'll want to add a formGroup directive and pass it an existing FormGroup instance (you can create one in your class)</p>
  </blockquote>
  
  <p><strong>Parent HTML</strong></p>
  
  <pre><code>&lt;form [formGroup]="disciplineForm"&gt;
  
        &lt;app-input-multilang [labelName]="Title" (childToParent)="update($event)" &gt;&lt;/app-input-multilang&gt;
  
      &lt;/form&gt;
  </code></pre>
  
  <p><strong>Reusable comp: app-input-multilang HTML</strong></p>
  
  <pre><code>&lt;ng-container&gt;
    &lt;div class="form-group"&gt;
      &lt;label for="discipline"&gt;{{Title}}&lt;/label&gt;
      &lt;div class="input-group"&gt;
        &lt;input type="text" class="form-control" formControlName="control.name" id="discipline" required /&gt;
        &lt;div class="input-group-append"&gt;
          &lt;button class="btn btn-default active" type="button"&gt;de&lt;/button&gt;
          &lt;button class="btn btn-outline-secondary" type="button"&gt;en&lt;/button&gt;
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/ng-container&gt;
  </code></pre>
  
  <p><strong>Reusable comp: app-input-multilang TS</strong></p>
  
  <pre><code>import { Component, OnInit } from '@angular/core';
  import { ControlValueAccessor,FormControl, FormGroup, Validators, NG_VALUE_ACCESSOR,NG_VALIDATORS, } from "@angular/forms";
  
  @Component({
    selector: 'app-input-multilang',
    templateUrl: './form-input-multilang.component.html',
    styleUrls: ['./form-input-multilang.component.scss'],
  
  })
  export class FormInputMultilangComponent implements OnInit {
  
  
  
    constructor() { }
  
    ngOnInit() {
    }
  
  }
  </code></pre>