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<?php |
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/** |
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* Upload.php - Upload Trait |
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* |
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* The Jaxon class uses a modular plug-in system to facilitate the processing |
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* of special Ajax requests made by a PHP page. |
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* It generates Javascript that the page must include in order to make requests. |
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* It handles the output of response commands (see <Jaxon\Response\Response>). |
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* Many flags and settings can be adjusted to effect the behavior of the Jaxon class |
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* as well as the client-side javascript. |
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* |
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* @package jaxon-core |
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* @author Thierry Feuzeu <[email protected]> |
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* @copyright 2017 Thierry Feuzeu <[email protected]> |
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* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License |
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* @link https://github.com/jaxon-php/jaxon-core |
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*/ |
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namespace Jaxon\Traits; |
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use Jaxon\Plugin\Manager as PluginManager; |
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use Jaxon\Request\Manager as RequestManager; |
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use Jaxon\Response\Manager as ResponseManager; |
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use Jaxon\Utils\URI; |
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use Exception; |
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use Closure; |
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trait Upload |
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{ |
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/** |
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* Check if uploaded files are available |
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* |
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* @return boolean |
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*/ |
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public function hasUploadedFiles() |
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{ |
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if(($xUploadPlugin = $this->getPluginManager()->getRequestPlugin(self::FILE_UPLOAD)) == null) |
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{ |
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return false; |
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} |
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return $xUploadPlugin->canProcessRequest(); |
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} |
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/** |
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* Check uploaded files validity and move them to the user dir |
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* |
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* @return boolean |
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*/ |
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public function saveUploadedFiles() |
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{ |
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try |
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{ |
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if(($xUploadPlugin = $this->getPluginManager()->getRequestPlugin(self::FILE_UPLOAD)) == null) |
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{ |
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throw new Exception($this->trans('errors.upload.plugin')); |
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} |
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elseif(!$xUploadPlugin->canProcessRequest()) |
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{ |
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throw new Exception($this->trans('errors.upload.request')); |
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} |
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// Save uploaded files |
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$sKey = $xUploadPlugin->saveUploadedFiles(); |
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$sResponse = '{"code": "success", "upl": "' . $sKey . '"}'; |
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$return = true; |
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} |
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catch(Exception $e) |
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{ |
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$sResponse = '{"code": "error", "msg": "' . addslashes($e->getMessage()) . '"}'; |
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$return = false; |
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} |
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// Send the response back to the browser |
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echo '<script>var res = ', $sResponse, '; </script>'; |
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if(($this->getOption('core.process.exit'))) |
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{ |
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exit(); |
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} |
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return $return; |
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} |
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/** |
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* Get the uploaded files |
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* |
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* @return array |
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*/ |
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public function getUploadedFiles() |
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{ |
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if(($xUploadPlugin = $this->getPluginManager()->getRequestPlugin(self::FILE_UPLOAD)) == null) |
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{ |
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return []; |
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} |
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return $xUploadPlugin->getUploadedFiles(); |
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} |
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/** |
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* Filter uploaded file name |
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* |
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* @param Closure $fFileFilter The closure which filters filenames |
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* |
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* @return void |
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*/ |
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public function setUploadFileFilter(Closure $fFileFilter) |
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{ |
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if(($xUploadPlugin = $this->getPluginManager()->getRequestPlugin(self::FILE_UPLOAD)) == null) |
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{ |
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return; |
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} |
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$xUploadPlugin->setFileFilter($fFileFilter); |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.