Laravel 8 未定义的变量帖子

Question

我有一个错误..它说：未定义的变量：posts（查看：C:\xampp\htdocs\dinsospermasdes\bansus\resources\views\admin\posts\index.blade.php）它在 home.blade.php 中的工作方式如下：@foreach ($posts as $post)    <div class="card mb-4">        <img class="card-img-top" src="{‌{filter_var($post->post_image, FILTER_VALIDATE_URL) ? $post->post_image : '/storage/' . $post->post_image}}" alt="Card image cap">        <div class="card-body">        <h2 class="card-title">{‌{$post->title}}</h2>        <p class="card-text">{‌{Str::limit($post->body, '50', '....')}}</p>        <a href="{‌{route('post', $post->id)}}" class="btn btn-primary">Read More &rarr;</a>        </div>        <div class="card-footer text-muted">        Posted on {‌{$post->created_at->diffForHumans()}} by        <a href="#">{‌{$post->name}}</a>        </div>    </div>    @endforeach但在 admin/posts/index.blade.php 中不起作用，如下所示： @foreach($posts as $post)                      <tr>                          <td>{‌{$post->id}}</td>                          <td>{‌{$post->title}}</td>                          <td>                            <img height="40px" src="{‌{filter_var($post->post_image, FILTER_VALIDATE_URL) ? $post->post_image : '/storage/' . $post->post_image}}">                          </td>                          <td>{‌{$post->created_at->diffForHumans()}}</td>                          <td>{‌{$post->updated_at->diffForHumans()}}</td>                      </tr>                      @endforeach这是 PostController.php：class PostController extends Controller{    //    public function index(){        $post = Post::all();        return view('admin.posts.index');    }    public function show(Post $post){        return view ('blog-post', ['post'=>$post]);    }    public function create(){        return view ('admin.posts.create');    }

Answer 1

在索引方法中，您需要传递posts

public function index(){

    $posts = Post::all();

    return view('admin.posts.index',compact('posts'));

}

你没有传递posts variable刀片文件。因此，它给了你undefined error。