yii2怎么用uploadify

下载Uploadify控件可以到git网站上找，找到自己适合用的.例如我们下面用个就是从

https://github.com/xjflyttp/yii2-uploadify-widget 下载的，里面也有详细的操作文档。 （推荐学习：yii教程）

① 配置composer.json (就存在网站根目录下)，找到require，然后添加我们的uploadify

"require": {
"php": ">=5.4.0",
"yiisoft/yii2": ">=2.0.6",
"yiisoft/yii2-bootstrap": "*",
"yiisoft/yii2-swiftmailer": "*",
"xj/yii2-uploadify-widget": "~2.0.0" //这里是新添加的
},

② 利用composer 将yii2-uploadify-widget 下载到我们网站, 打开在网站根目录运行命令行 ,等待下载如图：

③ 视图的处理

 &＃39;test&＃39;]);
echo Uploadify::widget([
    &＃39;url&＃39; => yii\helpers\Url::to([&＃39;s-upload&＃39;]),
    &＃39;id&＃39; => &＃39;test&＃39;, //需要跟上fileInput 的id 对应
    &＃39;csrf&＃39; => true,
    &＃39;renderTag&＃39; => false,
     &＃39;jsOptions&＃39; => [
                  &＃39;width&＃39; => 100,
                  &＃39;height&＃39; => 40,
                  &＃39;onUploadError&＃39; => new JsExpression(<< new JsExpression(<<
④ 配置Controller 层
 [
            &＃39;class&＃39; => UploadAction::className(),
            //磁盘目录
            &＃39;basePath&＃39; => &＃39;@webroot/upload&＃39;,
            //访问目录
            &＃39;baseUrl&＃39; => &＃39;@web/upload&＃39;,
            //防止跨站攻击
            &＃39;enableCsrf&＃39; => true, // default
            &＃39;postFieldName&＃39; => &＃39;Filedata&＃39;, // default
            //BEGIN METHOD
            &＃39;format&＃39; => [$this, &＃39;methodName&＃39;],
            //END METHOD
            //BEGIN CLOSURE BY-HASH
            //是否覆盖相同文件
            &＃39;overwriteIfExist&＃39; => true,
            //创建图片名称
            &＃39;format&＃39; => function (UploadAction $action) {
                $fileext = $action->uploadfile->getExtension();
                $filename = sha1_file($action->uploadfile->tempName);
                return "{$filename}.{$fileext}";
            },
             //想要多调用这个函数
            &＃39;format&＃39; => function (UploadAction $action) {
                $fileext = $action->uploadfile->getExtension();
                $filehash = sha1(uniqid() . time());
                $p1 = substr($filehash, 0, 2);
                $p2 = substr($filehash, 2, 2);
                return "{$p1}/{$p2}/{$filehash}.{$fileext}";
            },
            */
            &＃39;validateOptions&＃39; => [
                &＃39;extensions&＃39; => [&＃39;jpg&＃39;, &＃39;png&＃39;], //后缀验证
                &＃39;maxSize&＃39; => 1 * 1024 * 1024, //上传大小限制
             ],
             //验证前处理
            &＃39;beforeValidate&＃39; => function (UploadAction $action) {
                //throw new Exception(&＃39;test error&＃39;);
                },
             //验证后处理
            &＃39;afterValidate&＃39; => function (UploadAction $action) {},
             //保存前处理
            &＃39;beforeSave&＃39; => function (UploadAction $action) {},
            //保存后处理
            &＃39;afterSave&＃39; => function (UploadAction $action) {
                //$action->output 返回给浏览器的数据
                //返回Url 图片返回的路径
                //$action->getWebUrl()
                //图片的名称
                //$action->getFilename();
                //保存图片的物理位置
                //$action->getSavePath();
                //输出                                 
                //$action->output[&＃39;fileUrl&＃39;] = $action->getWebUrl();
                //$action->output[&＃39;fileName&＃39;] = $action->getFilename();
                //$action->output[&＃39;filePath&＃39;] = $action->getSavePath();
                //$action->getFilename(); // "image/yyyymmddtimerand.jpg"
                //$action->getWebUrl(); //  "baseUrl + filename, /upload/image/yyyymmddtimerand.jpg"
                 //$action->getSavePath(); // "/var/www/htdocs/upload/image/yyyymmddtimerand.jpg"
                $action->output[‘fileUrl’] = $action->getWebUrl()
              },
           ],
        ];
     }
   }
?>
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