Question

我对Laravel很新。我在使用Controller和新创建的blade.php

时发现了这个令人困惑的错误

这是我的控制器

class UsersController extends Controller
{
    public function index(){
            $users[] = [
            '0' => [
                'first_name' => 'James',
                'last_name' => 'Bond',
                'location' => 'UK'
            ],
            '1' => [
                'first_name' => 'Jimmy',
                'last_name' => 'Carter',
                'location' => 'USA'
            ]
        ];

        return view('admin.users.index', compact('users'));
    }
}

这是我的index.blade.php文件

@if (count($users) > 0)
    @foreach($users as $user)
        <li>{!! $user['first_name'] !!}</li>
    @endforeach
@endif

我总是得到以下错误。因为我知道我正确地将$ user对象传递给blade.php。但我无法弄清楚出了什么问题

ErrorException in f1adbf0485f192729c60772e5dc5b16ad0234be2.php line 3:
Undefined index: first_name (View: /Users/Mac/Development/PHP/Laravel/Lara53/resources/views/admin/users/index.blade.php)
in f1adbf0485f192729c60772e5dc5b16ad0234be2.php line 3
at CompilerEngine->handleViewException(object(ErrorException), '1') in PhpEngine.php line 44
at PhpEngine->evaluatePath('/Users/Mac/Development/PHP/Laravel/Lara53/storage/framework/views/f1adbf0485f192729c60772e5dc5b16ad0234be2.php', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'users' => array(array(array('first_name' => 'James', 'last_name' => 'Bond', 'location' => 'UK'), array('first_name' => 'Jimmy', 'last_name' => 'Carter', 'location' => 'USA'))))) in CompilerEngine.php line 59
at CompilerEngine->get('/Users/Mac/Development/PHP/Laravel/Lara53/resources/views/admin/users/index.blade.php', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'users' => array(array(array('first_name' => 'James', 'last_name' => 'Bond', 'location' => 'UK'), array('first_name' => 'Jimmy', 'last_name' => 'Carter', 'location' => 'USA'))))) in View.php line 149

Answer 1

public function index(){
        $users = [
        '0' => [
            'first_name' => 'James',
            'last_name' => 'Bond',
            'location' => 'UK'
        ],
        '1' => [
            'first_name' => 'Jimmy',
            'last_name' => 'Carter',
            'location' => 'USA'
        ]
    ];

    return view('admin.users.index', compact('users'));
}

Answer 2

您使用$ users[] = array()，因此$users[0]保存数组。在你的刀片中应该像这样，或者实现为Paul Androschuk的回答。

@if (count($users[0]) > 0)
    @foreach($users[0] as $user)
        <li>{!! $user['first_name'] !!}</li>
    @endforeach
@endif

Laravel Undefined index foreach at blade.php

2 个答案: