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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| <?php | ||
| /** | ||
| * fileInput上传独立控制器 | ||
| * 同步上传 | ||
| * 前端设置：'uploadAsync' => false | ||
| * 如果是多图，必须必须设置maxFiles规则不为1，且上传字段最后加[],例如Post['img'][] | ||
| * 如果是单图，则不需要设置maxFiles，且上传字段不要加[] | ||
| * 目前项目未采用此种上传，如果要用，还需要更改各种回调事件中的逻辑 | ||
| */ | ||
|
|
||
| namespace common\components; | ||
|
|
||
| use Yii; | ||
| use yii\base\Action; | ||
| use yii\base\DynamicModel; | ||
| use yii\helpers\FileHelper; | ||
| use yii\helpers\Url; | ||
| use yii\web\Response; | ||
| use yii\web\UploadedFile; | ||
|
|
||
| /** | ||
| * ajax上传文件action | ||
| */ | ||
| class UploadSyncAction extends Action | ||
| { | ||
| /** | ||
| * 上传字段名称 | ||
| * 可以不设置，在上传时传递name参数也可以，优先使用上传时的name参数 | ||
| * @var string | ||
| */ | ||
| public $name; | ||
| /** | ||
| * 保存路径 | ||
| * @var string | ||
| */ | ||
| public $path; | ||
| /** | ||
| * 验证规则 | ||
| * ['extensions'=>'png,jpg,gif','maxFiles' => 2,...] | ||
| * @var array | ||
| */ | ||
| public $rule = []; | ||
|
|
||
| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function init() | ||
| { | ||
| //关闭csrf | ||
| Yii::$app->request->enableCsrfValidation = false; | ||
| //默认名称 | ||
| if (empty($this->name)) { | ||
| $this->name = 'file_data'; | ||
| } | ||
| //默认路径 | ||
| if (empty($this->path)) { | ||
| $this->path = Yii::$app->params['defaultPath']; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * 运行 | ||
| * @throws \yii\base\Exception | ||
| */ | ||
| public function run() | ||
| { | ||
| if (Yii::$app->request->isAjax) { | ||
| Yii::$app->response->format = Response::FORMAT_JSON; | ||
| $action = Yii::$app->request->get('action'); | ||
| if ($action == 'upload') { | ||
| //如果是上传 | ||
| return $this->upload(); | ||
| } elseif ($action == 'delete') { | ||
| //如果是删除 | ||
| return $this->delete(); | ||
| } else { | ||
| //参数错误 | ||
| return ['error' => Yii::t('common', 'Invalid Parameter')]; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * 上传文件 | ||
| * 由于用的是kartik的yii2-widget-fileinput组件，所以需要返回组件需要的格式 | ||
| * @throws \yii\base\Exception | ||
| */ | ||
| public function upload() | ||
| { | ||
| //文件字段名称 | ||
| $name = Yii::$app->request->post('name'); | ||
| if (empty($name)) { | ||
| $name = $this->name; | ||
| } | ||
| //上传的文件,判断是单图上传还是多图上传 | ||
| if (isset($this->rule['maxFiles']) && ($this->rule['maxFiles'] != 1 || $this->rule['maxFiles'] > 1)) { | ||
| $fileInstances = UploadedFile::getInstancesByName($name); | ||
| $uploadFile = $fileInstances; | ||
| } else { | ||
| $fileInstance = UploadedFile::getInstanceByName($name); | ||
| $uploadFile = $fileInstance; | ||
| $fileInstances[0] = $fileInstance; | ||
| } | ||
| //验证文件上传 | ||
| $model = new DynamicModel([$name => $uploadFile]); | ||
| $model->addRule($name, 'file', $this->rule)->validate(); | ||
| if ($model->hasErrors()) { | ||
| $error = $model->getFirstError($name); | ||
| return ['error' => $error]; | ||
| } | ||
| //如果没有目录，则创建目录 | ||
| FileHelper::createDirectory(Yii::getAlias('@webroot') . $this->path); | ||
| $saveFiles = []; | ||
| $configs = []; | ||
| foreach ($fileInstances as $key => $fileInstance) { | ||
| //保存文件 | ||
| $newName = time() . rand(1000, 9999) . $key;//文件重命名 | ||
| if (!$fileInstance->saveAs(Yii::getAlias('@webroot') . $this->path . $newName . '.' . $fileInstance->extension)) { | ||
| $uploadError = Yii::t('common', 'Upload failed!'); | ||
| //如果一个出错，将所有上传的都删除掉 | ||
| foreach ($saveFiles as $item) { | ||
| @unlink(Yii::getAlias('@webroot') . $item); | ||
| } | ||
| return ['error' => $uploadError]; | ||
| } | ||
| //返回正确信息 | ||
| $saveFile = $this->path . $newName . '.' . $fileInstance->extension; | ||
| $saveFiles[] = $saveFile; | ||
| $configs[] = [ | ||
| 'caption' => $newName . '.' . $fileInstance->extension, | ||
| 'url' => Url::to(['upload', 'action' => 'delete']), | ||
| //todo,后续如果用数据库存储，则需要返回对应的id，方便删除 | ||
| 'key' => $saveFile, | ||
| ]; | ||
| } | ||
| return [ | ||
| 'initialPreview' => $saveFiles, //必须返回数据才能调用ajax删除 | ||
| 'initialPreviewConfig' => $configs, | ||
| 'keys' => $saveFiles//单独自定义，不用上面的值了 | ||
| ]; | ||
| } | ||
|
|
||
| /** | ||
| * 删除文件 | ||
| */ | ||
| public function delete() | ||
| { | ||
| $key = Yii::$app->request->post('key'); | ||
| @unlink(Yii::getAlias('@webroot') . $key); | ||
| //todo,后续如果用数据库存储，需删除数据，可能返回错误什么的['error'=>'error message'] | ||
| return [ | ||
| 'key' => $key | ||
| ]; | ||
| } | ||
| } |
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