Laravel -为什么在我的工厂里，助理之前工作，而不是在创建之后？

// 示例工厂定义
$factory->define(App\Models\Assistant::class, function (Faker $faker) {
    return [
        'name' => $faker->name,
        'email' => $faker->unique()->safeEmail,
        // 其他字段
    ];
});

use Illuminate\Support\Facades\DB;

DB::transaction(function () use ($assistant) {
    $assistant = Assistant::create([
        'name' => 'John Doe',
        'email' => 'john@example.com',
    ]);

    // 其他操作
});

// 示例事件监听器
public function handle(AssistantCreated $event)
{
    // 处理逻辑
}

class Assistant extends Model
{
    public static function boot()
    {
        parent::boot();

        static::creating(function ($assistant) {
            // 创建前的逻辑
        });

        static::created(function ($assistant) {
            // 创建后的逻辑
        });
    }
}

// factories/AssistantFactory.php
use Faker\Generator as Faker;

$factory->define(App\Models\Assistant::class, function (Faker $faker) {
    return [
        'name' => $faker->name,
        'email' => $faker->unique()->safeEmail,
        // 其他字段
    ];
});

// tests/Feature/AssistantTest.php
use Tests\TestCase;
use App\Models\Assistant;
use Illuminate\Foundation\Testing\RefreshDatabase;

class AssistantTest extends TestCase
{
    use RefreshDatabase;

    public function test_assistant_creation()
    {
        $assistant = factory(Assistant::class)->create();

        $this->assertDatabaseHas('assistants', [
            'name' => $assistant->name,
            'email' => $assistant->email,
        ]);
    }
}