php - Laravel 模型转换无法正常工作

Question

我目前正在开发我的 Laravel 应用程序，但我遇到了一个问题。

我有一个名为 StoreDataProduct 的模型，它有两个转换

protected $casts = [
    'default_image' => 'array',
    'images'        => 'array',
];

现在在我的应用程序的两个地方，这个模型不能正确地处理类型转换。 首先，在某处的更新方法中，我将模型转换为数组以快速更新所有更改的值。

$productArray = $currentStoreDataProduct->toArray();

但是它会抛出一个错误，json_decode 需要一个字符串但得到一个数组。

其次，我试图获取产品的属性并将其放入我应用程序中其他位置的数组中，但它会引发相同的错误。

'default_image'          => $currentStoreDataProduct->default_image,

如有任何帮助解决此问题，我们将不胜感激。

模型的dd->getAttributes:

array:33 [
"store_data_product_id" => 12204
  "website_id" => 5
  "store_view_id" => 13
  "store_data_brand_id" => null
  "store_data_supplier_id" => null
  "external_product_id" => 70432304
  "external_variant_id" => 139154696
  "name" => "ONE + Kreissäge 150mm RWSL1801M *Body only*"
  "name_long" => "ONE + Kreissäge 150mm RWSL1801M *Body only*"
  "name_variant" => "Default"
  "description" => "ONE + Circular saw 150mm RWSL1801M *Body only*. Ideal for sawing panels, chipboards, laminated boards and wood materials. The integrated laser ensures more exact longitudinal cuts. The thin carbide saw blade ensures less resistance during sawing and a longer service life of the hand-held circular saw."
  "content" => """
    <p>*Body only*</p>\r\n
    <p>Ideal for sawing panels, chipboards, laminated boards and wood materials. The integrated laser ensures more exact longitudinal cuts. The thin carbide saw blade ensures less resistance during sawing and a longer service life of the hand-held circular saw. One Plus is the most flexible battery tool system in the world, allowing you to use 29 different cordless power tools and 7 different garden tools with just one battery and charger. The flexibility of One Plus means for you that you can put together your own cordless tool system, entirely to your wishes, how and when you want. Invest once in a battery and charger, choose the tools you need and you can use all the tools with this one battery. You save money because you do not have to buy a battery and charger with every new tool!</p>\r\n
    <h3>Highlights &amp; Details</h3>\r\n
    <ul class="product-features list--unstyled">\r\n
    <li class="product-features__item">Micro softgrip</li>\r\n
    <li class="product-features__item">Laser for more exact longitudinal cuts</li>\r\n
    </ul>\r\n
    <h3>Performance</h3>\r\n
    <ul class="product-features list--unstyled">\r\n
    <li class="product-features__item">Laser for more exact longitudinal cuts</li>\r\n
    <li class="product-features__item">Cutting capacity of 45 mm at 90 °</li>\r\n
    <li class="product-features__item">Miter adjustment up to 50 °</li>\r\n
    <li class="product-features__item">Thin hard metal saw blade (1.5 mm)</li>\r\n
    <li class="product-features__item">Spindle lock for simple saw blade change</li>\r\n
    <li class="product-features__item">Micro softgrip.</li>\r\n
    </ul>\r\n
    <h3>Delivery</h3>\r\n
    <ul class="product-features list--unstyled">\r\n
    <li class="product-features__item">Tungsten carbide saw blade Z 18 Ø 150 mm</li>\r\n
    <li class="product-features__item">Parallel stop</li>\r\n
    <li class="product-features__item">Allen key.</li>\r\n
    </ul>
    """
  "url" => "one-cirkelzaag-150mm-70432304"
  "default_image" => "{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397588\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397588\/50x50x2\/file.jpg"}"
  "images" => "{"171826733":{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397597\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397597\/50x50x2\/file.jpg"},"171826727":{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397594\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397594\/50x50x2\/file.jpg"},"171826721":{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397588\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397588\/50x50x2\/file.jpg"},"171826712":{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397576\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397576\/50x50x2\/file.jpg"},"171826709":{"src":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397567\/file.jpg","thumb":"https:\/\/cdn.webshopapp.com\/shops\/38604\/files\/193397567\/50x50x2\/file.jpg"}}"
  "meta_fields" => null
  "article_code" => "140-0075"
  "sku" => "5133001164"
  "ean" => "4892210118554"
  "cost_price_excl" => "58.82"
  "price_excl" => "78.4298"
  "special_price_excl" => "0"
  "vat_rate" => "1.21"
  "is_default" => true
  "sort_order" => 1
  "visibility" => "visible"
  "stock_level" => 998
  "stock_sold" => 1
  "stock_status" => "enabled"
  "weight" => 0
  "settings" => "{"has_been_salable":1,"last_date_salable":{"date":"2018-05-14 08:44:30.884906","timezone_type":3,"timezone":"Europe\/Amsterdam"},"fiction_margin":0}"
  "created_at" => "2018-05-12 00:06:07"
  "updated_at" => "2018-05-14 10:06:07"
]

部分记录的错误:

    [2018-05-14 10:15:22] local.ERROR: json_decode() expects parameter 1 to be string, array given {"exception":"[object] (ErrorException(code: 0): json_decode() expects parameter 1 to be string, array given at /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php:682)
[stacktrace]
#0 [internal function]: Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleError(2, 'json_decode() e...', '/var/www/domain...', 682, Array)
#1 /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php(682): json_decode(Array, true)
#2 /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php(491): Illuminate\\Database\\Eloquent\\Model->fromJson(Array)
#3 /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php(182): Illuminate\\Database\\Eloquent\\Model->castAttribute('default_image', Array)
#4 /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php(102): Illuminate\\Database\\Eloquent\\Model->addCastAttributesToArray(Array, Array)
#5 /vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(972): Illuminate\\Database\\Eloquent\\Model->attributesToArray()

Answer 1

我找出了导致错误的原因。我通过组合来自不同表的一些数据并将其混合到一个模型中来调用模型，但是通过这样做返回的模型包含已经转换的属性，因为它像这样设置它们。

public function setRawAttributes(array $attributes, $sync = false)
    {
        $this->attributes = $attributes;

        if ($sync) {
            $this->syncOriginal();
        }

        return $this;
    }

这就是我收到错误的原因，因为它已经是这个新返回模型的数组。

我最终通过在合并模型上调用 getAttributes 而不是 toArray 解决了这个错误。这样，属性就按预期设置在返回模型上(JSON 而不是数组)。