如何使用 Yii2 上传多个文件 [英] How to upload several files using Yii2

问题描述

以下代码只上传一个文件而不是几个文件.任何想法，如何解决?这是我的模型:

Following code just uploads one file instead several files. Any ideas, how to fix that? Here is my model:

<?php

//Code programmed by Thomas Kipp
//Change it, learn it, do as u please!
///path:/models/

namespace frontend\models;

use Yii;
use yii\base\Model;

class myScriptForm extends Model{ // A new Class programmed by Thomas Kipp 

...
    public $avatar;
...

    public function rules() {
        $avatar=array();
        return [
            ['avatar[]','file']]
    }

}

//End of class
?>

这是我的 SiteController 方法:

Here is my method of SiteController:

    public function actionScript() { //A new method, programmed by Thomas Kipp
        $model = new myScriptForm();
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {

            $model->avatar = UploadedFile::getInstances($model, 'avatar[]');
            if ($model->avatar) {
                echo "<font size='4'><br><center>File <font color='red'> "
                . "$model->avatar<font color='black'> successfully uploaded."
                . "<br>It's available in folder 'uploadedfiles' </font></font color></center>";
                $model->avatar->saveAs(Yii::getAlias('@uploadedfilesdir/' . $model->avatar->baseName . '.' . $model->avatar->extension));
            } else
                echo"<font size='4'><br><center>No Upload-file selected.<br>"
                . "Nothing moved into folder 'uploadedfiles' </font></center>";
            return $this->render('myScript', ['model' => $model]);
        }
        else {
            return $this->render('myScript_Formular', ['model' => $model]);
        }
    }

还有我的公式，它没有上传几个文件:

and still my Formular, which is not uploading several files:

<?=
$form->field($model,'avatar[]')->widget(FileInput::classname(), ['options' => ['accept' => 'image/*', 'multiple' => true],])
?>

推荐答案

首先，如果你在控制器中有类似 echo (...) 的东西 - 你做错了什么.

First of all, if you have something like echo (...) in controller - youre doing something wrong.

在你的代码中你没有对上传的文件做任何 foreach，所以它只保存了一个.

In your code youre not doing any foreach over uploaded files, so it's saving only one.

Yii2 - 上传多个文件 - 这里有关于如何上传多个文件的完整指南，包括示例等.

Yii2 - Uploading Multiple Files - here you have full guide how to upload multiple files, with examples etc.

这篇关于如何使用 Yii2 上传多个文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！