title: How to go back to a parent component in Angular 2
body: <p>I want to go back to my parent componentn after a form is submitted in my AddUserComponent.</p>
  
  <p>My url should change : <code>/video/1/user</code> to <code>/video/1</code></p>
  
  <p>I tried </p>
  
  <pre><code>this._router.navigate(['../../video'],{ relativeTo: this.route })
  this._router.navigate(['../../video',{video_id:1}],{ relativeTo: this.route })
  </code></pre>
  
  <p>but it's not working. </p>
  
  <p>My routes :</p>
  
  <pre><code>export const routes = [
    { path: '', component: VideosComponent },
    {
      path: 'video/:video_id',
      children :[
          { path: '', component: VideoComponent },
          { 
            path: 'user',
            children :[
                { path: '', component: AddUserComponent },
                { path: ':user_id', 
                  children :[
                    { path: '', component: EditUserComponent}
                  ]
                }
            ]
          },
      ]
  }
  ];
  </code></pre>
  
  <p>Any ideas ?</p>