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<?php |
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namespace yiicod\fileupload\widgets; |
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use Exception; |
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use Yii; |
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use yii\helpers\ArrayHelper; |
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use yii\helpers\HtmlPurifier; |
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use yii\helpers\Url; |
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use yii\widgets\InputWidget; |
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use yiicod\fileupload\components\base\UploaderInterface; |
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use yiicod\fileupload\themes\base\BaseTheme; |
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use yiicod\fileupload\themes\ThemeInterface; |
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/** |
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* Class FileUpload |
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* File upload widget |
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* |
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* @author Alexey Orlov |
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* @author Virchenko Maksim <[email protected]> |
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* |
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* @package yiicod\fileupload\widgets |
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*/ |
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class FileUpload extends InputWidget |
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{ |
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/** |
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* Widget id. |
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* |
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* @var string |
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*/ |
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public $id = 'fileupload'; |
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/** |
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* Theme class |
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* |
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* @var string|array |
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*/ |
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public $theme = BaseTheme::class; |
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/** |
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* Html options. |
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* |
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* @var array |
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*/ |
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public $options = []; |
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/** |
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* Upload url |
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* |
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* @var string |
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*/ |
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public $uploadUrl = 'site/file-upload'; |
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/** |
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* Remove url |
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* |
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* @var string |
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*/ |
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public $deleteUrl = 'site/file-delete'; |
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/** |
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* Class name |
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* |
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* @var UploaderInterface string |
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*/ |
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public $uploader; |
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/** |
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* User data, send in receptorClass method. |
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* |
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* @var array |
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*/ |
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public $userData = []; |
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/** |
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* Run widget |
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*/ |
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public function run() |
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{ |
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$theme = $this->buildTheme(); |
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$this->registerClientScripts(); |
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$theme->registerClientScripts(); |
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return $this->render($theme->getViewAlias(), ArrayHelper::merge($theme->getViewData(), [ |
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'id' => $this->id, |
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'model' => $this->model, |
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'attribute' => $this->attribute, |
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'options' => $this->generateHtmlOptions(), |
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])); |
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} |
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/** |
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* Get theme |
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* |
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* @return ThemeInterface |
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* |
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* @throws Exception |
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*/ |
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protected function buildTheme(): ThemeInterface |
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{ |
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$theme = null; |
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if (is_a($this->theme, ThemeInterface::class)) { |
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$theme = $this->theme; |
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} elseif (is_array($this->theme)) { |
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if (isset($this->theme['class']) && in_array(ThemeInterface::class, class_implements($this->theme['class']))) { |
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$theme = new $this->theme['class']($this); |
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foreach ($this->theme as $option => $value) { |
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if (property_exists($theme, $option)) { |
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$theme->{$option} = $value; |
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} |
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} |
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} |
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} elseif ($this->theme && in_array(ThemeInterface::class, class_implements($this->theme))) { |
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$theme = new $this->theme($this); |
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} |
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if (is_null($theme)) { |
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throw new Exception(sprintf('Theme must be string of className or array("class" => className) ' . |
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'and implement "%s"', ThemeInterface::class)); |
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} |
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/* @var ThemeInterface $theme */ |
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return $theme; |
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} |
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/** |
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* Generate html options for widget. |
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* |
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* @return array |
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*/ |
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public function generateHtmlOptions(): array |
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{ |
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$this->options['id'] = $this->id; |
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return $this->options; |
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} |
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/** |
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* Generate upload url. |
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* |
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* @param string $url |
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* |
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* @return string |
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*/ |
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public function generateUrl(?string $url): ?string |
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{ |
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if (is_null($url)) { |
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return null; |
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} |
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$payload = self::encodeServerOptions([ |
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'uploader' => $this->uploader, |
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'userData' => $this->userData, |
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]); |
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if (is_array($url)) { |
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return Url::to(ArrayHelper::merge($url, ['data' => $payload]), true); |
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} |
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return Url::to([$url, 'data' => $payload], true); |
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} |
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/** |
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* Decode server options. |
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* |
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* @param string $data Data key for decode server options |
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* |
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* @return array $data Return array of data |
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* |
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* @throws Exception |
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*/ |
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public static function decodeServerOptions($data): array |
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{ |
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$vars = Yii::$app->session->get($data); |
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if (false === $vars && isset($_FILES['files'])) { |
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throw new Exception('Incorrect file/files', 406); |
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} |
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$vars = @unserialize(HtmlPurifier::process(base64_decode($vars))); |
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if (false === $vars) { |
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throw new Exception('Your session was expired. Please reload your page and try again.', 400); |
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} |
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foreach ($vars['userData'] as $key => $value) { |
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if ('?' === $value) { |
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$vars['userData'][$key] = HtmlPurifier::process(Yii::$app->request->getQueryParam($key, null)); |
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} |
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} |
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return $vars; |
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} |
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/** |
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* Encode server options. |
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* |
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* @return string $data Return encode array of data |
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* |
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* @param array $data Server options for uploader |
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* |
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* @throws Exception |
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*/ |
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public static function encodeServerOptions($data): string |
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{ |
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$data = base64_encode(serialize($data)); |
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Yii::$app->session->set(md5($data), $data); |
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return md5($data); |
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} |
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/** |
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* Register client scripts |
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*/ |
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protected function registerClientScripts() |
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{ |
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FileUploadJsAsset::register($this->getView()); |
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FileUploadCssAsset::register($this->getView()); |
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} |
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} |
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yiicod /
yii2-fileupload
