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

<?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() ?>

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]);
}

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。