问Undfined变量'posts‘- Laravel 5

EN

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Depress;
use DB;
use App\Http\Requests;

class ShowController extends Controller
{
    public function showPost(Request $request)
    {
        $posts = Depress::all();
        return view('homeview')->with('posts', $posts);
    }
}

 @foreach($posts as $post)
        <div class="panel panel-default">
            <div class="panel-heading">{{ $post->name }}</div>
            <div class="panel-body">
                {{ $post->depression }}
            </div>
        </div>
 @endforeach