yii2文件上传使用到yii2自带的文件上传类UploadFIle,以及对应的模型规则，这里分别介绍单文件上传和多文件上传：
yii2单个文件上传：
上传步奏，先创建上传表单模型model（包含验证规则），其次控制器操作action，以及相对应的view:
model层：
Upload.php [单文件上传模型]
<?php
namespace app\models;use Yii;use yii\base\Model;
class Upload extends Model{ public $file;
public function rules(){ return [
[[‘file‘], ‘file‘, ‘extensions‘ => ‘jpg, png‘, ‘mimeTypes‘ => ‘image/jpeg, image/png‘,], ]; }
public function attributeLabels(){ return [ ‘file‘=>‘文件上传‘ ]; }}
UploadForm.php [多文件上传模型]
<?phpnamespace app\models;
use Yii;use yii\base\Model;
class UploadForm extends Model{ /** * @var UploadedFile|Null file attribute */ public $file;
/** * @return array the validation rules. */ public function rules() { return [ [[‘file‘], ‘file‘, ‘maxFiles‘ => 10,‘extensions‘=>‘jpg,png,gif‘], ]; }
public function attributeLabels(){ return [ ‘file‘=>‘多文件上传‘ ]; }
Controller层，以TestController中的upload操作和upmore操作
<?php namespace app\controllers;
use Yii;use yii\web\Controller;use app\models\Upload;use app\models\UploadForm;use yii\web\UploadedFile;
class TestController extends Controller{
public function actionIndex(){ return $this->renderPartial(‘index‘); }
/** * @return string|\yii\web\Response * 单文件上传 */ public function actionUpload(){ $model= new Upload();
if (Yii::$app->request->isPost) { $file = UploadedFile::getInstance($model, ‘file‘); $path=‘uploads/‘.date("YmdH",time()).‘/‘; if ($file && $model->validate()) { if(!file_exists($path)){ mkdir($path,0775,true); } $file->saveAs($path . time() . ‘.‘ . $file->getExtension()); Yii::$app->session->setFlash(‘success‘,‘上传成功！‘); return $this->redirect(‘upload‘); } }
return $this->render(‘upload‘,[‘model‘=>$model]); }
public function actionUpmore(){ $model = new UploadForm(); if (Yii::$app->request->isPost) { $file = UploadedFile::getInstances($model, ‘file‘);
if ($file && $model->validate()) { echo "<pre/>";
foreach ($file as $fl) { $fl->saveAs(‘uploads/‘ .mt_rand(1100,9900) .time() .$fl->baseName. ‘.‘ . $fl->extension); } Yii::$app->session->setFlash(‘success‘,‘上传成功！‘); return $this->redirect(‘upmore‘); } }
return $this->render(‘upmore‘, [‘model‘ => $model]); }}
view:层
[单文件view uplod.php]
<?php use yii\helpers\Html; use yii\widgets\ActiveForm; ?><!doctype html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title></head><body><h4>文件上传</h4><?php if(Yii::$app->session->hasFlash(‘success‘)):?> <div class="alert alert-danger"> <?=Yii::$app->session->getFlash(‘success‘)?> </div><?php endif ?><?php $form=ActiveForm::begin([ ‘id‘=>‘upload‘, ‘enableAjaxValidation‘ => false, ‘options‘=>[‘enctype‘=>‘multipart/form-data‘]]);?><?= $form->field($model, ‘file‘)->fileInput();?><?= Html::submitButton(‘提交‘, [‘class‘=>‘btn btn-primary‘,‘name‘ =>‘submit-button‘]) ?><?php ActiveForm::end(); ?> </body></html>
[多文件view upmore.php]
<?php use yii\helpers\Html; use yii\widgets\ActiveForm; ?><!doctype html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title></head><body><h4>多文件上传</h4><?php if(Yii::$app->session->hasFlash(‘success‘)):?> <div class="alert alert-danger"> <?=Yii::$app->session->getFlash(‘success‘)?> </div><?php endif ?><?php $form=ActiveForm::begin([ ‘id‘=>‘upload‘, ‘enableAjaxValidation‘ => false, ‘options‘=>[‘enctype‘=>‘multipart/form-data‘]]);?><?= $form->field($model, ‘file[]‘)->fileInput([‘multiple‘ => true]);?><?= Html::submitButton(‘提交‘, [‘class‘=>‘btn btn-primary‘,‘name‘ =>‘submit-button‘]) ?><?php ActiveForm::end(); ?> </body>
</html>
时间： 2024-10-22 13:30:01