先创建一个(UploadForm.php)模型层
<?php
namespace appmodels;
use yiiaseModel;
use yiiwebUploadedFile;
/**
* 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()
{
//'skipOnEmpty' => false 验证
//'extensions' => 'png, jpg, gif, jpeg' 上传的文件的格式
return [
[['file'], 'file'],
];
}
}
------------------------------------------------------------------------------
控制器层 (UploadController.php)
<?php
namespace backendcontrollers;
use Yii;
use yiiwebController;
use appmodelsUploadForm;
use yiiwebUploadedFile;
class UploadController extends Controller{
function actionIndex(){
$request = Yii::$app->request;
$model = new UploadForm();
if($request->isPost)
{
$model->file = UploadedFile::getInstance($model, 'file');
if ($model->file && $model->validate())
{
$r = $model->file->saveAs('./upload/' . $model->file->baseName . '.'. $model->file->extension); //这是上传,upload文件夹要自己手动创建
//获取上传文件的名称
$r = $model->file;
$image= $r->name;
//添加入库
$upload = Yii::$app->db;
$query = $upload->createCommand()->insert("upload",['image'=>$image]);
if($query->execute())
{
$this->redirect(array('upload/index'));
}
}
}
else
{
return $this->render('upload',['model' => $model]);
}
}
}
-----------------------------------------------------------------------------------------------------
视图层(upload.php)
<?php
use yiiwidgetsActiveForm;
use yiihelpersUrl;
?>
<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]) ?>
<table class="table table-bordered table-hover definewidth m10">
<tr>
<td class="tableleft">上传图片</td>
<td><?= $form->field($model, 'file')->fileInput() ?></td>
</tr>
<tr>
<td class="tableleft"></td>
<td>
<button type="submit" class="btn btn-primary" type="button">保存</button>
</td>
</tr>
<?php ActiveForm::end() ?>