yii2 file upload

Input file upload Yii2

Steps:
1. Create a action fileUpload
2. Create a model FileUploadForm
3. Create a form

FileUploadForm model:

namespace backend\models;

use yii\base\Model;
use yii\web\UploadedFile;

class FileUploadForm extends Model
{
 
    public $Files;

    public function rules()
    {
        return [
            [['Files'], 'file', 'skipOnEmpty' => false, 'extensions' => 'jpg', 'maxFiles' => 2],
        ];
    }
    
    public function uploadHere()
    {
        if ($this->validate()) { 
            foreach ($this->Files as $file) {
                $file->saveAs('path/to/uploads/' . $file->baseName . '.' . $file->extension);
            }
            return true;
        } else {
            return false;
        }
    }
}

Action FileUpload:

public function actionFileUpload()
    {
        $model = new FileUploadForm();

        if (Yii::$app->request->isPost) {
            $model->Files = UploadedFile::getInstances($model, 'Files');
            if ($model->uploadHere()) {
                // your code here
                return;
            }
        }

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

File input form:

use yii\widgets\ActiveForm;

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

$form->field($model, 'Files[]')->fileInput(['multiple' => true, 'accept' => 'image/*'])

ActiveForm::end()