<?php
​
namespace app\welcome\controller;
​
use think\Controller;
use app\User\model\Post;
​
class Index extends Controller
{
    public function home()
    {
        $this->assign([
            'posts' => Post::with('user')->order('created_at', 'desc')->paginate(20)
        ]);
        return $this->fetch();
  }
  ...
}

...
<div>
  <div class="list-group list-group-flush">
    @foreach ($posts as $post)
    <div class="list-group-item">
      <div>
        {{ $post->user->name }} -- {{ $post->created_at }}
      </div>
      <div>
        {{ $post->content }}
      </div>
    </div>
    @endforeach
  </div>
​
  {!! $posts !!}
</div>
@stop
...