README

A little helper trait to easily upload files from a local filesystem to another filesystem

Installation

composer require eluhr/yii2-fileflyupload

Usage

Your config must configure the needed filesystems see creocoder/yii2-flysystem

Use the trait in your Model

 namespace example\namespace\models;

 use eluhr\fileflyupload\traits\FileflyUploadTrait;
 use yii\base\Model;
 use yii\helpers\FileHelper;

 class MyModel extends Model
 {
 use FileflyUploadTrait;

 public $file;
 
 public function getLocalFs(): string {
 return 'fsLocal';
 }
 
 public function getStorageFs(): string {
 return 'fsStorage';
 }

 public function rules(): array
 {
 $rules = parent::rules();
 $rules[] = [
 'file',
 'file',
 'skipOnEmpty' => false,
 'extensions' => 'pdf',
 'maxSize' => 3145728 // 3 MB
 ];
 return $rules;
 }

 public function upload(): bool
 {
 if ($this->validate()) {
 $relativePath = '/path/to/file.pdf';
 $absolutePath = \Yii::$app->get($this->getLocalFs())->path . $relativePath;
 if (!FileHelper::createDirectory(dirname($absolutePath))) {
 return false;
 }
 if ($this->file->saveAs($absolutePath) && $this->moveLocalFileToStorage($relativePath)) {
 return true;
 }
 $this->addError('file', \Yii::t('model','Error while uploading file'));
 }
 return false;
 }
 
 
 public function beforeDelete()
 {
 if (!$this->deleteFromStorage('/path/to/file.pdf')) {
 return false;
 }
 return parent::beforeDelete();
 }
 }

In your controller you just call the method moveLocalFileToStorage

 namespace example\namespace\controllers;

 use my\namespace\models\MyModel;
 use yii\web\Controller;
 use yii\web\UploadedFile;
 use Yii;

 class MyController extends Controller
 {
 public function actionUpload()
 {
 $model = new MyModel();
 if (Yii::$app->getRequest()->getIsPost()) {
 $model->file = UploadedFile::getInstance($model, 'file');
 if ($model->upload()) {
 return $this->redirect(['upload']);
 }
 }
 return $this->render('upload', ['model' => $model]);
 }
 }

Your view file can look something like this

use yii\helpers\Html;
use yii\widgets\ActiveForm;

$form = ActiveForm::begin();
echo $form->field($model, 'file')->fileInput(['accept' => 'application/pdf']);
echo Html::submitButton();
ActiveForm::end();

Note: This is a very basic example. This may not suit your needs. Please do not blindly copy and paste it