Laravel view load twice to display comment - laravel

Question

I don't know why the page has to load twice to display comments.
Here is my route: Route::post('/addComment', 'CommentsController#addComment');
Here is my controller:
public function addComment(Request $request)
{
$this->validate($request, [
'name' => 'required',
'body' => 'required',
]);
$lesson_id = $request->lesson_id;
$comment = new Comment;
$comment->name = $request->input('name');
$comment->body = $request->input('body');
$comment->parrent_id = '0';
$comment->lesson_id = $request->lesson_id;
$comment->save();
return back();
}
Here is my view:
<div class="leave_review">
<h3 class="blog_heading_border"> コメント </h3>
{!! Form::open(['action' => ['CommentsController#addComment'], 'method' => 'POST', 'id' => 'postForm' ]) !!}
<input type="hidden" name="_token" value="{{ csrf_token() }}" />
<input type="hidden" id ="lesson_id" name="lesson_id" value="{{$lesson->id}}" />
</div>
<div class="row">
<div class="col-sm-6">
#error('name')
<div class="alert alert-danger">{{ $message }}</div>
#enderror
{{Form::label('name','名前')}}
{{Form::text('name', '', ['class' => 'form-group', 'id' => 'name' ]) }}
</div>
<div class="col-sm-12">
#error('body')
<div class="alert alert-danger">{{ $message }}</div>
#enderror
{{Form::label('body','メッセージ')}}
{{Form::textarea('body', '', ['class' => 'form-group', 'id' => 'body']) }}
</div>
</div>
<div class="row">
<div class="col-md-12">
</div>
</div>
{{Form::submit('Submit', ['class' => 'send mt_btn_yellow pull-right', 'id' => 'submit'])}}
{!! Form::close() !!}
{{-- End add comment --}}
{{--Display comment--}}
<ol class="review-lists">
#foreach ($comment as $value)
<li class="comment">
<div class="activity_rounded">
<img src="/storage/icon/icon.jpg" alt="image"> </div>
<div class="comment-body">
<h4 class="text-left">{{$value->name}}
<small class="date-posted pull-right">{{ \Carbon\Carbon::parse($value->created_at)->diffForHumans() }}</small>
</h4>
<p>{{$value->body}} </p>
<button class="pull-left mt_btn_yellow" onclick="toggleReply('{{$value->id}}')">返事</button>
{{-- ENd Display comment--}}

Answer 1

#foreach ($comment as $value)
<li class="comment">
<div class="activity_rounded">
<img src="/storage/icon/icon.jpg" alt="image"> </div>
<div class="comment-body">
<h4 class="text-left">{{$value->name}}
<small class="date-posted pull-right">{{ \Carbon\Carbon::parse($value->created_at)->diffForHumans() }}</small>
</h4>
<p>{{$value->body}} </p>
<button class="pull-left mt_btn_yellow" onclick="toggleReply('{{$value->id}}')">返事</button>
{{-- ENd Display comment--}}
you don't have a #endforeach