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:

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

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

控制器

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]);}

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