Bekerja dengan atribut JSON Menggunakan Cast Array Laravel '

Laravel menyediakan asarrayObject dan ascollection cast untuk mengendalikan atribut JSON kompleks dengan lebih berkesan, membolehkan manipulasi intuitif struktur data bersarang.

<!-- Syntax highlighted by torchlight.dev --><?php use Illuminate\Database\Eloquent\Casts\AsArrayObject;
use Illuminate\Database\Eloquent\Casts\AsCollection;

class User extends Model
{
    protected $casts = [
        &#39;settings&#39; => AsArrayObject::class,
        'tags' => AsCollection::class
    ];
}

mari kita meneroka contoh lengkap model produk yang menggunakan atribut JSON untuk menguruskan spesifikasi dan variasi:

<!-- Syntax highlighted by torchlight.dev --><?php namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Casts\AsArrayObject;
use Illuminate\Database\Eloquent\Casts\AsCollection;

class Product extends Model
{
    protected $fillable = [&#39;name&#39;, &#39;specs&#39;, &#39;variants&#39;];
    protected $casts = [
        &#39;specs&#39; => AsArrayObject::class,
        'variants' => AsCollection::class,
    ];
}

// Migration for this model would look like:
public function up()
{
    Schema::create('products', function (Blueprint $table) {
        $table->id();
        $table->string('name');
        $table->json('specs');
        $table->json('variants');
        $table->timestamps();
    });
}

// Usage example:
$product = Product::create([
    'name' => 'Gaming Laptop',
    'specs' => [
        'processor' => 'Intel i7',
        'ram' => '16GB',
        'storage' => [
            'primary' => '512GB SSD',
            'secondary' => '1TB HDD'
        ]
    ],
    'variants' => [
        ['color' => 'Black', 'price' => 999],
        ['color' => 'Silver', 'price' => 1099]
    ]
]);

//
// Update nested specs without any PHP errors
$product->specs['storage']['primary'] = '1TB SSD';
$product->save();
// Use collection methods on variants
$product->variants->push(['color' => 'Red', 'price' => 1199]);
$product->save();
// Filter variants using collection methods
$expensiveVariants = $product->variants->where('price', '>', 1000);

Pelakon ini membolehkan manipulasi data JSON yang lancar sambil mengekalkan kod yang bersih dan dikekalkan. AsarrayObject menyediakan akses seperti array, sementara Ascollection menawarkan kaedah pengumpulan kuat Laravel.

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