Laravel Commenting System Only Working on most recent Post - php

Question

I recently created a commenting system for a blog. When there is one post in the blog, the commenting sytem works fine. However, when there are two posts on the blog, and I comment on the FIRST post, the comment shows up on the SECOND post. Similarily, if I add another post, so there are three posts in my blog, when I comment on the first post, the comment shows up under the third post. In the same situation, when I comment on the second post, the comment shows up under the third post. Here is my code:
/index.blade.php
#section('content')
<div class="col-md-8 col-md-offset-2">
<hr>
#foreach($posts as $post)
<h3>{{ $post->title}}</h3>
<p>by {{ $post->user->name }}</p>
<img src='{{ asset($post->image_path) }}' class="img-responsive" id="blogpic"/>
<p>{{ Str::words($post->body) }}</p>
<p>Read More...</p>
<hr>
{{ Form::open(array('action' => 'CommentController#newComment')) }}
{{ Form::hidden('post_id', $post->id) }}
<div class="row">
<div class="col-md-10">
{{ Form::text('body', null, array('class'=>'form-control')) }}
</div>
<div class="col-md-2">
{{ Form::submit('Post', array('class'=>'btn btn-info')) }}
</div>
</div>
<br>
#foreach($post->comments as $comment)
<div class="comment">
<p><span class="bold">{{ $comment->user->name }}</span>: {{ $comment->body }}</p>
</div>
#endforeach
#endforeach
</div>
#stop
Here is my new comment controller:
public function newComment()
{
$comment = New Comment();
$comment->user_id = Auth::user()->id;
$comment->post_id = $post_id = Input::get('post_id');
$comment->body = Input::get('body');
Post::find($post_id)->comments()->save($comment);
return Redirect::action('BlogController#index');
}
I am pretty sure the problem is in my index file, and I can provide more code if needed. My comment only seems to get the most recent id in this line
{{ Form::hidden('post_id', $post->id) }}
What could be going wrong?
Thanks in advance