如何在Laravel工厂中过滤查询

use App\Models\User;
use App\Models\Post;
use Illuminate\Database\Eloquent\Factories\Factory;

class PostFactory extends Factory
{
    protected $model = Post::class;

    public function definition()
    {
        return [
            'title' => $this->faker->sentence,
            'content' => $this->faker->paragraph,
            'user_id' => User::factory(),
        ];
    }

    public function published()
    {
        return $this->state(function (array $attributes) {
            return [
                'published' => true,
            ];
        });
    }

    public function withAuthor($author)
    {
        return $this->state(function (array $attributes) use ($author) {
            return [
                'user_id' => $author->id,
            ];
        });
    }

    public function configure()
    {
        return $this->afterCreating(function (Post $post) {
            // 可以在创建模型后执行一些额外的操作
        });
    }
}

use App\Models\User;
use App\Models\Post;

// 创建一个已发布的文章
$post = Post::factory()->published()->create();

// 创建一个指定作者的文章
$author = User::factory()->create();
$post = Post::factory()->withAuthor($author)->create();