用户数据未显示在 Laravel 的 html 表上

如何解决用户数据未显示在 Laravel 的 html 表上

我正在尝试显示来自 mypgadmin 的注册用户，但在浏览器中没有显示。当使用 MysqL 数据库获取用户数据以显示在 HTML 表上时，一切正常，但是当使用 Postgresql 时，它没有在表上显示数据。

This is my table html file

.env 文件

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:VNPNgqPxCOrUd2CH6+CoEVb/mRzIBmepWStqCigANbM=
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

DB_CONNECTION=pgsql
DB_HOST=localhost
DB_PORT=5432
DB_DATABASE=core
DB_USERNAME=postgres
DB_PASSWORD=ajay



broADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
SESSION_LIFETIME=120

这是我的welcome.blade.PHP

<h1 class="mb4">Users</h1>
 <br>


    <table>
        <thead >
            <tr>
                <td>Id</td>
                <td>Name</td>
                <td>Email</td>
                <td>Menu roles</td>
            </tr>
        </thead>
        <tbody>
                @foreach($users as $a)
                <tr>
                   <td>{{ $a-> id}}</td>
                  <td>{{ $a-> username }}</td>
                  <td>{{ $a-> email }}</td>
                  <td>{{ $a-> role_id }}</td>
                </tr>
                    @endforeach
         </tbody>

</table>

这是我的 web.PHP

<?PHP
use Illuminate\Support\Facades\Route;
/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/',function () {
    return view('welcome',['users' => App\User::all()]);

   Route::get('welcome','UserController@registered');
});

UserController.PHP 文件

<?PHP

namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\User;

class UsersController extends Controller
{

     public function registered()
     {
        $users= User::get();
        return view('welcome')->with('users',$users);
      }

}

型号代码

<?PHP

namespace App;
use Illuminate\Database\Eloquent\Model;

class User extends Model{

    protected $table="users";

}