Centralizing Logic with Eloquent Model Observers

// app/Observers/ProductObserver.php
namespace App\Observers;

use App\Models\Product;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;

class ProductObserver
{
    /**
     * Handle the Product "creating" event.
     */
    public function creating(Product $product): void
    {
        $product->slug = Str::slug($product->name);
        Log::info("Product creating: {$product->name}");
    }

    /**
     * Handle the Product "created" event.
     */
    public function created(Product $product): void
    {
        // For example, invalidate a cache related to products
        // Cache::forget('all_products');
        Log::info("Product created: {$product->name} with ID {$product->id}");
    }

    /**
     * Handle the Product "updated" event.
     */
    public function updated(Product $product): void
    {
        if ($product->isDirty('price')) {
            Log::warning("Product price changed for {$product->name} from {$product->getOriginal('price')} to {$product->price}");
        }
    }

    /**
     * Handle the Product "deleted" event.
     */
    public function deleted(Product $product): void
    {
        Log::info("Product deleted: {$product->name} (ID: {$product->id})");
    }
}

// app/Providers/AppServiceProvider.php (in boot method)
namespace App\Providers;

use App\Models\Product;
use App\Observers\ProductObserver;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        //
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        Product::observe(ProductObserver::class);
    }
}