首页 \ 问答 \ 没有找到Laravel 5.5 Trait(Laravel 5.5 Trait not found)

没有找到Laravel 5.5 Trait(Laravel 5.5 Trait not found)

 我无法绕过这个，因为我在另一个项目上有这个并且工作得很好。 它目前给我这个错误 
 

 
 
 Symfony \ Component \ Debug \ Exception \ FatalErrorException（E_UNKNOWN）Trait'App \ Traits \ ResponseTrait'未找到 
 

 

 UserRepository工作正常，特性没有。 我已经尝试重命名特征，将其移动到存储库文件夹，chmod到777，我不知道什么是错的。 
 

 认识我的HomeController，laravel的默认值： 
 

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Repositories\UserRepository as User;
use App\Traits\ResponseTrait;

class HomeController extends Controller
{
  use ResponseTrait;

  private $user;

  /**
  * Create a new controller instance.
  *
  * @return void
  */
  public function __construct(User $user)
  {
    $this->user = $user;
    $this->middleware('auth');
  }

  /**
  * Show the application dashboard.
  *
  * @return \Illuminate\Http\Response
  */
  public function index()
  {
    //dd($this->user->all()->toArray());
    //You can ignore the self:: part, as it doesn't reach this far.
    self::setData($this->user->all()->toArray());
    return "test";
    return view('home');
  }
}

 

 特点： 
 

<?

namespace App\Traits;

trait ResponseTrait {
  public function setData($array) {

  }
}

 

 特征的路径是/app/Traits/ResponseTrait.php 
 

 在我的composer.json中，我已经使用App指令进行了PSR-4自动加载。 
 

"psr-4": {
   "App\\": "app/"
}

 

 Edit1：我尝试过composer dump-autoload，问题仍然存在 

I can't wrap my head around this, as I have this on another project and works just fine. It is currently giving me this error 
 

 
 
Symfony \ Component \ Debug \ Exception \ FatalErrorException (E_UNKNOWN) Trait 'App\Traits\ResponseTrait' not found
 

 

The UserRepository works just fine, the trait does not. I've tried renaming the trait, moving it to the repository folder, chmod it to 777, and I have no idea what could be wrong.
 

Meet my HomeController, the laravel's default:
 

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Repositories\UserRepository as User;
use App\Traits\ResponseTrait;

class HomeController extends Controller
{
  use ResponseTrait;

  private $user;

  /**
  * Create a new controller instance.
  *
  * @return void
  */
  public function __construct(User $user)
  {
    $this->user = $user;
    $this->middleware('auth');
  }

  /**
  * Show the application dashboard.
  *
  * @return \Illuminate\Http\Response
  */
  public function index()
  {
    //dd($this->user->all()->toArray());
    //You can ignore the self:: part, as it doesn't reach this far.
    self::setData($this->user->all()->toArray());
    return "test";
    return view('home');
  }
}

 

The trait:
 

<?

namespace App\Traits;

trait ResponseTrait {
  public function setData($array) {

  }
}

 

The trait's path is /app/Traits/ResponseTrait.php
 

At my composer.json, I've got PSR-4 autoload with the App directive.
 

"psr-4": {
   "App\\": "app/"
}

 

Edit1: I have tried composer dump-autoload, issue remains

原文：https://stackoverflow.com/questions/48095680
更新时间：2022-05-25 13:05

最满意答案

 如果它对我这样优化的人有用： 
 

$newPosts = DB::table('posts')
              ->where('created_at', '>=', Carbon::now()->subHours(24)->toDateTimeString())
              ->groupBy('category')
              ->select('category', DB::raw('COUNT(category) as number'))
              ->pluck('number', 'category');

 

 结果如下所示： 
 

[
  'Interviews' => 5,
  'Lifestyle' => 7,
  'About me' => 1,
]

 

 并在视图中 
 

<nav>
    <div class="nav-wrapper">
        <ul>
            <li><a href="/"><i class="fa fa-home"></i> Home</a></li>
            <li>
                <a href="/interviews">
                    Interviews
                    @if(isset($newPosts['Interviews']))
                        <span class="badge">{{ $newPosts['Interviews'] }}</span>
                    @endif
                </a>
            </li>
            <li>
                <a href="/lifestyle">
                    Lifestyle
                    @if(isset($newPosts['Lifestyle']))
                        <span class="badge">{{ $newPosts['Lifestyle'] }}</span>
                    @endif
                </a>
            </li>
            <li>
                <a href="/about-me">
                    About me
                    @if(isset($newPosts['About me']))
                        <span class="badge">{{ $newPosts['About me'] }}</span>
                    @endif
                </a>
            </li>
        </ul>
    </div>
</nav>

 

 这样只有一个查询被使用，你可以显示新帖子的数量。 
 

 感谢willvincent ar Laracasts。 

If it's useful for someone I optimized it like this:
 

$newPosts = DB::table('posts')
              ->where('created_at', '>=', Carbon::now()->subHours(24)->toDateTimeString())
              ->groupBy('category')
              ->select('category', DB::raw('COUNT(category) as number'))
              ->pluck('number', 'category');

 

The result is something like:
 

[
  'Interviews' => 5,
  'Lifestyle' => 7,
  'About me' => 1,
]

 

And in the view
 

<nav>
    <div class="nav-wrapper">
        <ul>
            <li><a href="/"><i class="fa fa-home"></i> Home</a></li>
            <li>
                <a href="/interviews">
                    Interviews
                    @if(isset($newPosts['Interviews']))
                        <span class="badge">{{ $newPosts['Interviews'] }}</span>
                    @endif
                </a>
            </li>
            <li>
                <a href="/lifestyle">
                    Lifestyle
                    @if(isset($newPosts['Lifestyle']))
                        <span class="badge">{{ $newPosts['Lifestyle'] }}</span>
                    @endif
                </a>
            </li>
            <li>
                <a href="/about-me">
                    About me
                    @if(isset($newPosts['About me']))
                        <span class="badge">{{ $newPosts['About me'] }}</span>
                    @endif
                </a>
            </li>
        </ul>
    </div>
</nav>

 

That way only one query is used and you can show the number of the new posts.
 

Thanks to willvincent ar Laracasts.

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