yii2Example of Uploading Images with the Built-in UploadedFile

I have searched a lot about yii2Using the built-in UploadedFile to implement image upload introduction, I will record it below.

Create a models/UploadForm.php:

namespace app\models;
use yii\base\Model;
use yii\web\UploadedFile;
/**
* UploadForm is the model behind the upload form.
*/
class UploadForm extends Model
{
 /**
 * @var UploadedFile file attribute
 */
 public $file;
 /**
 * @return array the validation rules.
 */
 public function rules()
 {
  return [
   
  ]
 }
}

View file

<?php
use yii\widgets\ActiveForm;
?>
<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart']]);/form-data']]) ?>
<?= $form->field($model, ‘file’)->fileInput() ?>
<button>Submit</button>
<?php ActiveForm::end() ?>

Controller

use app\models\UploadForm;
use yii\web\UploadedFile;
public function actionUpload()
{
 $model = new UploadForm();
 if (Yii::$app->request->isPost) {
  $model->file = UploadedFile::getInstance($model, ‘file’);
  if ($model->file && $model->validate()) {
   $model->file->saveAs('uploads/' . $model->file->baseName . ‘.' . $model->file->extension);
  }
 }
 return $this->render('upload', ['model' => $model]);
}

That's all for this article. Hope it will be helpful to everyone's learning, and also hope everyone will support the呐喊 tutorial more.

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