yii2利用自带UploadedFile实现上传图片的示例

本人搜索了很多关于yii2利用自带UploadedFile实现上传图片介绍,下面我来记录一下。

创建一个 models/UploadForm.PHP:

rush: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 [
  [['file'],‘file'],];
  }
  }

视图文件

rush:PHP;">

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

<?= $form->field($model,‘file')->fileinput() ?>

Submit

<?php ActiveForm::end() ?>

控制器

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]);
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程之家。