Question

我有路线

Route::get('catalog/{category}/{product}', 'HomeController@productDetail')->name('product.index2');

和控制器

public function productDetail(categories $categories, product $product)
{
    $products = product::where('active', 1)->get();
    if($product->categories != $categories){
        abort(404);
    }
    return view('products', compact('product', 'products'));
}

我的错误

参数2传递给 App \ Http \ Controllers \ HomeController :: productDetail（）必须是 App \ Product的实例，给定字符串

和前面

<ul class="accordion-menu">
    @foreach ($categories as $item)
        <li>
            <div class="dropdownlink">{{$item->name}} <img src="{{ asset('build/img/d1.svg') }}" alt="Банковские терминалы"></div>
            <ul class="submenuItems">
                @foreach($item->children as $subcategory)
                    <li><a href="{{route('category.index2', $subcategory)}}">{{ $subcategory->name }}</a></li>
                @endforeach

            </ul>
        </li>
    @endforeach                    
</ul>

kernel.php

<?php

命名空间App \ Http;

将Illuminate \ Foundation \ Http \ Kernel用作HttpKernel；

class Kernel扩展HttpKernel { / ** *应用程序的全局HTTP中间件堆栈。 * *这些中间件在对您的应用程序的每次请求期间运行。 * * @var数组 * / 受保护的$ middleware = [ \ App \ Http \ Middleware \ CheckForMaintenanceMode :: class， \ Illuminate \ Foundation \ Http \ Middleware \ ValidatePostSize :: class， \ App \ Http \ Middleware \ TrimStrings :: class， \ Illuminate \ Foundation \ Http \ Middleware \ ConvertEmptyStringsToNull :: class， \ App \ Http \ Middleware \ TrustProxies :: class， ];

/**
 * The application's route middleware groups.
 *
 * @var array
 */
protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        // \Illuminate\Session\Middleware\AuthenticateSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
        \Illuminate\Routing\Middleware\SubstituteBindings::class,
    ],

    'api' => [
        'throttle:60,1',
        'bindings',
    ],
];

/**
 * The application's route middleware.
 *
 * These middleware may be assigned to groups or used individually.
 *
 * @var array
 */
protected $routeMiddleware = [
    'auth' => \App\Http\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
    'cache.headers' => \Illuminate\Http\Middleware\SetCacheHeaders::class,
    'can' => \Illuminate\Auth\Middleware\Authorize::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'signed' => \Illuminate\Routing\Middleware\ValidateSignature::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
    'verified' => \Illuminate\Auth\Middleware\EnsureEmailIsVerified::class,
];

/**
 * The priority-sorted list of middleware.
 *
 * This forces non-global middleware to always be in the given order.
 *
 * @var array
 */
protected $middlewarePriority = [
    \Illuminate\Session\Middleware\StartSession::class,
    \Illuminate\View\Middleware\ShareErrorsFromSession::class,
    \App\Http\Middleware\Authenticate::class,
    \Illuminate\Session\Middleware\AuthenticateSession::class,
    \Illuminate\Routing\Middleware\SubstituteBindings::class,
    \Illuminate\Auth\Middleware\Authorize::class,
];

}

Answer 1

您的路线和您的控制器方法期望2个参数之一是类别对象，另一个是产品对象。但是，当您调用route时，仅提供一个参数。

Route::get('catalog/{category}/{product}', 'HomeController@productDetail')->name('product.index2');

您还需要像下面一样传递您的产品对象，

<li><a href="{{route('category.index2', ['category'=> $subcategory, 'product'=>$product ])}}">{{ $subcategory->name }}</a></li>

Answer 2

您应该尝试以下操作：

您这样的功能

public function productDetail(categories $categories, product $product)
{
    $products = Product::where('active', 1)->get();
    if($product->categories != $categories){
        abort(404);
    }
    return view('products', compact('product', 'products'));
}

您这样的看法

<ul class="accordion-menu">
    @foreach ($categories as $item)
        <li>
            <div class="dropdownlink">{{$item->name}} <img src="{{ asset('build/img/d1.svg') }}" alt="Банковские терминалы"></div>
            <ul class="submenuItems">
                @foreach($item->children as $subcategory)
                    <li><a href="{{route('category.index2', [$subcategory,$product)}}">{{ $subcategory->name }}</a></li>// please add second parameter for product
                @endforeach

            </ul>
        </li>
    @endforeach                    
</ul>

注意：可能是因为您的路线名称是product.index2而不是category.index2

，所以您打错了路线

传递给App \ Http \ Controllers \ HomeController :: productDetail（）的参数2必须是App \ Product的实例，字符串为

2 个答案: