是否可以在yii2中上传从ActiveRecord继承的模型中的文件？

use yii\web\UploadedFile;

class YourModel extends \yii\db\ActiveRecord
{
    public $file;

    // ...
}

use yii\web\UploadedFile;

public function actionCreate()
{
    $model = new YourModel();

    if ($model->load(Yii::$app->request->post())) {
        $model->file = UploadedFile::getInstance($model, 'file');
        if ($model->file && $model->validate()) {
            $model->file->saveAs('path/to/save/' . $model->file->baseName . '.' . $model->file->extension);
            // 其他保存模型的逻辑
        }
    }

    return $this->render('create', [
        'model' => $model,
    ]);
}

use yii\widgets\ActiveForm;

$form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]);

echo $form->field($model, 'file')->fileInput();

ActiveForm::end();