Nicolas Hachet Architecte d'entreprise

Blog

CakePHP 2 : composant d’upload de fichiers images

5 January 2012

Pour ce premier article de 2012, je vous propose un code qui peut s’avérer très pratique pour la gestion de vos uploads de fichiers images. Ce composant CakePHP 2.0 prend forme en tant que Behaviour (helpeur de modèle). Le code est basé sur la version 1.0.1 du MeioUploadBehavior. Vous trouverez toutes les infos utiles sur le site MeioUpload Behavior.

Liens utiles

Site de l’auteur
Sujet sur le forum Cakephp france
MeioUpload sur Github
Branches de développement MeioUpload sur Github

A noter que le composant est toujours en développement : vous trouverez probablement une version plus à jour sur le github du MeioUpload. Vous trouverez de la documentation sur les liens précédents.

Utilisation

Fichier model

  
var $actsAs = array(  
 ‘MeioUpload’ => array(  
 ‘picture’ => array(  
 ‘dir’ => ‘img{DS}{model}{DS}{field}’,  
 ‘create_directory’ => true,  
 ‘allowed_mime’ => array(‘image/jpeg’, ‘image/pjpeg’, ‘image/png’),  
 ‘allowed_ext’ => array(‘.jpg’, ‘.jpeg’, ‘.png’),  
 ‘thumbsizes’ => array(  
 ‘normal’ => array(‘width’=>200, ‘height’=>200),  
 ),  
 ‘default’ => ‘default.jpg’,  
 )  
 )  
);  

Code source

Il s’agit de la version MeioUpload 1.0.1 mise à jour pour CakePHP 2.

  
<?php  
/*\*  
 \* MeioUpload Behavior  
 \* This behavior is based on Tane Piper’s improved uplaod behavior (https://digitalspaghetti.tooum.net/switchboard/blog/2497:Upload_Behavior_for_CakePHP_12)  
 \* @author Vinicius Mendes (vbmendes@gmail.com)  
 \* @link https://www.meiocodigo.com  
 \* @filesource https://www.meiocodigo.com/meioupload  
 \* @version 1.0.1  
 \* @lastmodified 2008-10-04  
 \*  
 \* Usage:  
 \* 1) Download this behaviour and place it in your models/behaviours/upload.php  
 \* 2) If you require thumbnails for image generation, download Nate’s phpThumb Component (https://bakery.cakephp.org/articles/view/phpthumb-component)  
 \* 3) Insert the following SQL into your database. This is a basic model you can expand on:  
 \* CREATE TABLE `images` (  
 \* `id` int(8) unsigned NOT NULL auto_increment,  
 \* `filename` varchar() default NULL,  
 \* `dir` varchar(255) default NULL,  
 \* `mimetype` varchar(255) NULL,  
 \* `filesize` int(11) unsigned default NULL,  
 \* `created` datetime default NULL,  
 \* `modified` datetime default NULL,  
 \* PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8;  
 \* 4) In your model that you want to have the upload behavior work, place the below code. This example is for an Image model:  
 \*  
 \* var $actsAs = array(‘Upload’ => array(  
 \* ‘filename’ => array(  
 \* ‘dir’ => ‘files/images’,  
 \* ‘create_directory’ => false,  
 \* ‘allowed_mime’ => array(‘image/jpeg’, ‘image/pjpeg’, ‘image/gif’, ‘image/png’),  
 \* ‘allowed_ext’ => array(‘.jpg’, ‘.jpeg’, ‘.png’, ‘.gif’),  
 \* ‘thumbsizes’ => array(  
 \* ‘small’ => array(‘width’=>100, ‘height’=>100),  
 \* ‘medium’ => array(‘width’=>220, ‘height’=>220),  
 \* ‘large’ => array(‘width’=>800, ‘height’=>600)  
 \* )  
 \* )  
 \* )  
 \* );  
 \* The above code will save the uploaded file’s name in the ‘filename’ field in database,  
 \* it will not overwrite existing files, instead it will create a new filename based on the original  
 \* plus a counter.  
 \* Allowed Mimetypes and extentions should be pretty explanitory.  
 \* For thumbnails, when the file is uploaded, it will create 3 thumbnail sizes and prepend the name  
 \* to the thumbfiles (i.e. image_001.jpg will produced thumb.small.image_001.jpg, thumb.medium.image_001.jpg, etc)  
 \*  
 \* 5) Create your upload view, make sure it’s a multipart/form-data form, and the filename field is of type $form->file  
 \* 6) Make sure your directory is at least CHMOD 775, also check your php.ini MAX_FILE_SIZE is enough to support the filesizes you are uploading  
 \*  
 \* Version Details  
 \*  
 \* 1.0.1  
 \* + Fixed a bug in the create folder method  
 \* + Now you can use the $validate var of the model to apply the changes to default validation rules;  
 \* + Changed the my_array_merge function, now it’s part of the behavior, name arrayMerge;  
 \* + Allow use of {DS}, {model} and {field} constants in directory name and fields names;  
 \* + Fixed a bug with the replacement of the default names.  
 \*  
 \* 1.0  
 \* + Initial release.  
 \*/

App :: uses(‘Folder’, ‘Utility’);

class MeioUploadBehavior extends ModelBehavior {  
 /*\*  
 \* The default options for the behavior  
 \*/  
 var $default_options = array(  
 ‘dir’ =>",  
 ‘allowed_mime’ => array(),  
 ‘allowed_ext’ => array(),  
 ‘create_directory’ => true,  
 ‘max_size’ => 2097152,  
 ‘thumbsizes’ => array(),  
 ‘default’ => false,  
 ‘fields’ => array(  
 ‘dir’ => ‘dir’,  
 ‘filesize’ => ‘filesize’,  
 ‘mimetype’ => ‘mimetype’  
 ),  
 ‘validations’ => array(  
 ‘FieldName’ => array(  
 ‘rule’ => array(‘uploadCheckFieldName’),  
 ‘check’ => true,  
 ‘message’ => ‘Nom du fichier incompatible avec les paramètres du comportement Meio.’  
 ),  
 ‘Dir’ => array(  
 ‘rule’ => array(‘uploadCheckDir’),  
 ‘check’ => true,  
 ‘message’ => ‘Répertoire de téléchargement introuvable ou inaccessible en écriture.’  
 ),  
 ‘Empty’ => array(  
 ‘rule’ => array(‘uploadCheckEmpty’),  
 ‘check’ => true,  
 ‘on’ => ‘create’,  
 ‘message’ => ‘Fichier introuvable.’  
 ),  
 ‘UploadError’ => array(  
 ‘rule’ => array(‘uploadCheckUploadError’),  
 ‘check’ => true,  
 ‘message’ => ‘Erreur lors du téléchargement du fichier.’  
 ),  
 ‘MaxSize’ => array(  
 ‘rule’ => array(‘uploadCheckMaxSize’),  
 ‘check’ => true,  
 ‘message’ => ‘Fichier trop volumineux.’  
 ),  
 ‘InvalidMime’ => array(  
 ‘rule’ => array(‘uploadCheckInvalidMime’),  
 ‘check’ => true,  
 ‘message’ => ‘Type de contenu invalide.’  
 ),  
 ‘InvalidExt’ => array(  
 ‘rule’ => array(‘uploadCheckInvalidExt’),  
 ‘check’ => true,  
 ‘message’ => ‘Extension du fichier invalide.’  
 )  
 )  
 );

 var $default_validations = array(  
 ‘FieldName’ => array(  
 ‘rule’ => array(‘uploadCheckFieldName’),  
 ‘check’ => true,  
 ‘message’ => ‘Nom du fichier incompatible avec les paramètres du comportement Meio.’  
 ),  
 ‘Dir’ => array(  
 ‘rule’ => array(‘uploadCheckDir’),  
 ‘check’ => true,  
 ‘message’ => ‘Répertoire de téléchargement introuvable ou inaccessible en écriture.’  
 ),  
 ‘Empty’ => array(  
 ‘rule’ => array(‘uploadCheckEmpty’),  
 ‘check’ => true,  
 ‘on’ => ‘create’,  
 ‘message’ => ‘Fichier introuvable.’  
 ),  
 ‘UploadError’ => array(  
 ‘rule’ => array(‘uploadCheckUploadError’),  
 ‘check’ => true,  
 ‘message’ => ‘Erreur lors du téléchargement du fichier.’  
 ),  
 ‘MaxSize’ => array(  
 ‘rule’ => array(‘uploadCheckMaxSize’),  
 ‘check’ => true,  
 ‘message’ => ‘Fichier trop volumineux.’  
 ),  
 ‘InvalidMime’ => array(  
 ‘rule’ => array(‘uploadCheckInvalidMime’),  
 ‘check’ => true,  
 ‘message’ => ‘Type de contenu invalide.’  
 ),  
 ‘InvalidExt’ => array(  
 ‘rule’ => array(‘uploadCheckInvalidExt’),  
 ‘check’ => true,  
 ‘message’ => ‘Extension du fichier invalide.’  
 )  
 );

 /*\*  
 \* The message for move error.  
 \*/  
 var $moveErrorMsg = ‘Erreur lors du déplacement du fichier temporaire.’;

 /*\*  
 \* The array that saves the $options for the behavior  
 \*/  
 var $__fields = array();

 /*\*  
 \* Patterns of reserved words  
 \*/  
 var $patterns = array(  
 "thumb",  
 "default"  
 );

 /*\*  
 \* Words to replace the patterns of reserved words  
 \*/  
 var $replacements = array(  
 "t_umb",  
 "d_fault"  
 );

 /*\*  
 \* Array of files to be removed on the afterSave callback  
 \*/  
 var $__filesToRemove = array();

 /*\*  
 \* Setup the behavior. It stores a reference to the model, merges the default options with the options for each field, and setup the validation rules.  
 \*  
 \* @author Vinicius Mendes  
 \* @return null  
 \* @param $model Object  
 \* @param $config Array[optional]  
 \*/  
 function setup(&amp;$model, $config=array()) {

 $this->Folder = &amp;new Folder;  
 $this->__model = $model;  
 $this->__fields = array();  
 foreach($config as $field => $options) {

 // Check if given field exists  
 if(!$model->hasField($field)) {  
 trigger_error(‘MeioUploadBehavior Error: The field "’.$field.’" doesn\\’t exists in the model "’.$model->name.’".’, E_USER_WARNING);  
 }

 // Merge given options with defaults  
 $options = $this->arrayMerge($this->default_options, $options);  
 // Including the default name to the replacements  
 if($options[‘default’]){  
 if(!preg_match(‘/^.+\\..+$/’,$options[‘default’])){  
 trigger_error(‘MeioUploadBehavior Error: The default option must be the filename with extension.’, E_USER_ERROR);  
 }  
 $this->_includeDefaultReplacement($options[‘default’]);  
 }  
 // Verifies if the thumbsizes names is alphanumeric  
 foreach($options[‘thumbsizes’] as $name => $size){  
 if(!preg_match(‘/^[0-9a-zA-Z]+$/’,$name)){  
 trigger_error(‘MeioUploadBehavior Error: The thumbsizes names must be alphanumeric.’, E_USER_ERROR);  
 }  
 }  
 // Process the max_size if it is not numeric  
 $options[‘max_size’] = $this->sizeToBytes($options[‘max_size’]);  
 $this->__fields[$field] = $options;

 // Generate temporary directory if none provided  
 if(empty($options[‘dir’])) {  
 $this->__fields[$field][‘dir’] = ‘uploads’ . DS . $model->name;  
 // Else replace the tokens of the dir.  
 } else {  
 $this->__fields[$field][‘dir’] = $this->replaceTokens($options[‘dir’],$field);  
 }

 // Replace tokens in the fields names.  
 foreach($this->__fields[$field][‘fields’] as $fieldToken => $fieldName){  
 $this->__fields[$field][‘fields’][$fieldToken] = $this->replaceTokens($fieldName,$field);  
 }

 // Check that the given directory does not have a DS on the end  
 if($options[‘dir’][strlen($options[‘dir’])-1] == DS) {  
 $options[‘dir’] = substr($options[‘dir’],0,strlen($options[‘dir’])-2);  
 }  
 }  
 }

 /*\*  
 \* Merges two arrays recursively  
 \*  
 \* @author Vinicius Mendes  
 \* @return Array  
 \* @param $arr Array  
 \* @param $ins Array  
 \*/  
 function arrayMerge($arr, $ins) {  
 if (is_array($arr)) {  
 if (is_array($ins)) {  
 foreach ($ins as $k=>$v) {  
 if (isset($arr[$k])&amp;&amp;is_array($v)&amp;&amp;is_array($arr[$k])) {  
 $arr[$k] = $this->arrayMerge($arr[$k],$v);  
 }  
 else $arr[$k] = $v;  
 }  
 }  
 } elseif (!is_array($arr)&amp;&amp;(strlen($arr)==0||$arr==0)) {  
 $arr=$ins;  
 }  
 return($arr);  
 }

 /*\*  
 \* Replaces some tokens. {model} to the underscore version of the model name, {field} to the field name, {DS}. / or \\ to DS constant value.  
 \*  
 \* @author Vinicius Mendes  
 \* @return String  
 \* @param $string String  
 \* @param $fieldName String  
 \*/  
 function replaceTokens($string,$fieldName){  
 return str_replace(array(‘{model}’, ‘{field}’, ‘{DS}’,’/’,’\\\\’),array(Inflector::underscore($this->__model->name),$fieldName,DS,DS,DS),$string);  
 }

 /*\*  
 \* Convert a size value to bytes. For example: 2 MB to 2097152.  
 \*  
 \* @author Vinicius Mendes  
 \* @return int  
 \* @param $size String  
 \*/  
 function sizeToBytes($size){  
 if(is_numeric($size)) return $size;  
 if(!preg_match(‘/^[1-9][0-9]\* (kb|mb|gb|tb)$/i’, $size)){  
 trigger_error(‘MeioUploadBehavior Error: The max_size option format is invalid.’, E_USER_ERROR);  
 return 0;  
 }  
 list($size, $unit) = explode(‘ ‘,$size);  
 if(strtolower($unit) == ‘kb’) return $size\*1024;  
 if(strtolower($unit) == ‘mb’) return $size\*1048576;  
 if(strtolower($unit) == ‘gb’) return $size\*1073741824;  
 if(strtolower($unit) == ‘tb’) return $size\*1099511627776;  
 trigger_error(‘MeioUploadBehavior Error: The max_size unit is invalid.’, E_USER_ERROR);  
 return 0;  
 }

 /*\*  
 \* Sets the validation for each field, based on the options.  
 \*  
 \* @author Vinicius Mendes  
 \* @return null  
 \* @param $fieldName String  
 \* @param $options Array  
 \*/  
 function setupValidation($fieldName, $options){  
 $options = $this->__fields[$fieldName];

 if(isset($this->__model->validate[$fieldName])){  
 if(isset($this->__model->validate[$fieldName][‘rule’])){  
 $this->__model->validate[$fieldName] = array(  
 ‘oldValidation’ => $this->__model->validates[$fieldName]  
 );  
 }  
 } else {  
 $this->__model->validate[$fieldName] = array();  
 }  
 $this->__model->validate[$fieldName] = $this->arrayMerge($this->default_validations,$this->__model->validate[$fieldName]);  
 $this->__model->validate[$fieldName] = $this->arrayMerge($options[‘validations’],$this->__model->validate[$fieldName]);  
 }

 /*\*  
 \* Checks if the field was declared in the MeioUpload Behavior setup  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckFieldName(&amp;$model, $data,$other){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘FieldName’][‘check’]) return true;  
 if(isset($this->__fields[$fieldName])){  
 return true;  
 } else {  
 $this->log(‘UploadBehavior Error: The field "’.$fieldName.’" wasn\\’t declared as part of the UploadBehavior in model "’.$model->name.’".’);  
 return false;  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if the folder exists or can be created or writable.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckDir(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘Dir’][‘check’]) return true;  
 $options = $this->__fields[$fieldName];  
 if(empty($field[‘remove’]) || empty($field[‘name’])){  
 // Check if directory exists and create it if required  
 if(!is_dir($options[‘dir’])) {  
 if($options[‘create_directory’]){  
 if(!$this->Folder->create($options[‘dir’])) {  
 trigger_error(‘UploadBehavior Error: The directory ‘.$options[‘dir’].’ does not exist and cannot be created.’, E_USER_WARNING);  
 return false;  
 }  
 } else {  
 trigger_error(‘UploadBehavior Error: The directory’.$options[‘dir’].’ does not exist.’, E_USER_WARNING);  
 return false;  
 }  
 }

 // Check if directory is writable  
 if(!is_writable($options[‘dir’])) {  
 trigger_error(‘UploadBehavior Error: The directory ‘.$options[‘dir’].’ isn\\’t writable.’, E_USER_WARNING);  
 return false;  
 }  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if the filename is not empty.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckEmpty(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘Empty’][‘check’]) return true;  
 if(empty($field[‘remove’])){  
 if(!is_array($field) || empty($field[‘name’])){  
 return false;  
 }  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if ocurred erros in the upload.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckUploadError(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘UploadError’][‘check’]) return true;  
 if(!empty($field[‘name’]) &amp;&amp; $field[‘error’] > 0){  
 return false;  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if the file isn’t bigger then the max file size option.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckMaxSize(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘MaxSize’][‘check’]) return true;  
 $options = $this->__fields[$fieldName];  
 if(!empty($field[‘name’]) &amp;&amp; $field[‘size’] > $options[‘max_size’]) {  
 return false;  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if the file is of an allowed mime-type.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckInvalidMime(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘InvalidMime’][‘check’]) return true;  
 $options = $this->__fields[$fieldName];  
 if(!empty($field[‘name’]) &amp;&amp; count($options[‘allowed_mime’]) > 0 &amp;&amp; !in_array($field[‘type’], $options[‘allowed_mime’])) {  
 return false;  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Checks if the file has an allowed extension.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $model Object  
 \* @param $data Array  
 \*/  
 function uploadCheckInvalidExt(&amp;$model, $data){  
 foreach($data as $fieldName => $field){  
 if(!$this->__model->validate[$fieldName][‘InvalidExt’][‘check’]) return true;  
 $options = $this->__fields[$fieldName];  
 if(!empty($field[‘name’])){  
 if(count($options[‘allowed_ext’]) > 0) {  
 $matches = 0;  
 foreach($options[‘allowed_ext’] as $extension) {  
 if(substr($field[‘name’],-strlen($extension)) == $extension) {  
 $matches++;  
 }  
 }

 if($matches == 0) {  
 return false;  
 }  
 }  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Set a file to be removed in afterSave callback  
 \*  
 \* @author Vinicius Mendes  
 \* @return null  
 \* @param $fieldName String  
 \*/  
 function setFileToRemove($fieldName){  
 $filename = $this->__model->field($fieldName);  
 if(!empty($filename) &amp;&amp; $filename != $this->__fields[$fieldName][‘default’]){  
 $this->__filesToRemove[] = array(  
 ‘dir’ => $this->__fields[$fieldName][‘dir’],  
 ‘name’ => $filename  
 );  
 }  
 }

 /*\*  
 \* Include a pattern of reserved word based on a filename, and it’s replacement.  
 \*  
 \* @author Vinicius Mendes  
 \* @return null  
 \* @param $default String  
 \*/  
 function _includeDefaultReplacement($default){  
 $replacements = $this->replacements;  
 list($newPattern, $ext) = $this->splitFilenameAndExt($default);  
 if(!in_array($newPattern, $this->patterns)){  
 $this->patterns[] = $newPattern;  
 $newReplacement = $newPattern;  
 if(isset($newReplacement[1])){  
 if($newReplacement[1] != ‘_’){  
 $newReplacement[1] = ‘_’;  
 } else {  
 $newReplacement[1] = ‘a’;  
 }  
 } elseif($newReplacement != ‘_’) {  
 $newReplacement = ‘_’;  
 } else {  
 $newReplacement = ‘a’;  
 }  
 $this->replacements[] = $newReplacement;  
 }  
 }

 /*\*  
 \* Removes the bad characters from the $filename and replace reserved words. It updates the $model->data.  
 \*  
 \* @author Vinicius Mendes  
 \* @return null  
 \* @param $fieldName String  
 \*/  
 function fixName($fieldName){  
 // updates the filename removing the keywords thumb and default name for the field.  
 list($filename, $ext) = $this->splitFilenameAndExt($this->__model->data[$this->__model->name][$fieldName][‘name’]);  
 $filename = str_replace($this->patterns,$this->replacements,$filename);  
 $filename = Inflector::slug($filename);  
 $i = 0;  
 $newFilename = $filename;  
 while(file_exists($this->__fields[$fieldName][‘dir’].DS.$newFilename.’.’.$ext)){  
 $newFilename = $filename.$i;  
 $i++;  
 }  
 $this->__model->data[$this->__model->name][$fieldName][‘name’] = $newFilename.’.’.$ext;  
 }

 /*\*  
 \* Splits a filename in two parts: the name and the extension. Returns an array with it respectively.  
 \*  
 \* @author Vinicius Mendes  
 \* @return Array  
 \* @param $filename String  
 \*/  
 function splitFilenameAndExt($filename){  
 $parts = explode(‘.’,$filename);  
 $ext = $parts[count($parts)-1];  
 unset($parts[count($parts)-1]);  
 $filename = implode(‘.’,$parts);  
 return array($filename,$ext);  
 }

 /*\*  
 \* Sets the validation rules for each field.  
 \*  
 \* @return true  
 \* @param $model Object  
 \*/  
 function beforeValidate(&amp;$model) {  
 foreach($this->__fields as $fieldName=>$options){  
 $this->setupValidation($fieldName, $options);  
 }  
 return true;  
 }

 /*\*  
 \* Uploads the files before saving the record.  
 \*  
 \* @author Vinicius Mendes  
 \* @param $model Object  
 \*/  
 function beforeSave(&amp;$model) {  
 foreach($this->__fields as $fieldName=>$options){  
 // if the file is marked to be deleted, use the default or set the field to null  
 if(!empty($model->data[$model->name][$fieldName][‘remove’])){  
 if($options[‘default’]){  
 $model->data[$model->name][$fieldName] = $options[‘default’];  
 } else {  
 $model->data[$model->name][$fieldName] = null;  
 }  
 //if the record is already saved in the database, set the existing file to be removed after the save is sucessfull  
 if(!empty($model->data[$model->name][$model->primaryKey])){  
 $this->setFileToRemove($fieldName);  
 }  
 continue;  
 }

 // If no file has been upload, then unset the field to avoid overwriting existant file  
 if(!isset($model->data[$model->name][$fieldName]) || !is_array($model->data[$model->name][$fieldName]) || empty($model->data[$model->name][$fieldName][‘name’])){  
 if(!empty($model->data[$model->name][$model->primaryKey]) || !$options[‘default’]){  
 unset($model->data[$model->name][$fieldName]);  
 } else {  
 $model->data[$model->name][$fieldName] = $options[‘default’];  
 }  
 continue;  
 }  
 //if the record is already saved in the database, set the existing file to be removed after the save is sucessfull  
 if(!empty($model->data[$model->name][$model->primaryKey])){  
 $this->setFileToRemove($fieldName);  
 }

 // Fix the filename, removing bad characters and avoiding from overwriting existing ones  
 $this->_includeDefaultReplacement($options[‘default’]);  
 $this->fixName($fieldName);  
 $saveAs = $options[‘dir’].DS.$model->data[$model->name][$fieldName][‘name’];

 // Attempt to move uploaded file  
 if(!move_uploaded_file($model->data[$model->name][$fieldName][‘tmp_name’], $saveAs)){  
 $model->validationErrors[$field] = $moveErrorMsg;  
 return false;  
 }

 // It the file is an image, try to make the thumbnails  
 if (count($options[‘allowed_ext’]) > 0 &amp;&amp; in_array($model->data[$model->name][$fieldName][‘type’], array(‘image/jpeg’, ‘image/pjpeg’, ‘image/png’))) {  
 foreach ($options[‘thumbsizes’] as $key => $value) {  
 // If a ‘normal’ thumbnail is set, then it will overwrite the original file  
 if($key == ‘normal’){  
 $thumbSaveAs = $saveAs;  
 // Otherwise, set the thumb filename to thumb.$key.$filename.$ext  
 } else {  
 $thumbSaveAs = $options[‘dir’].DS.’thumb.’.$key.’.’.$model->data[$model->name][$fieldName][‘name’];  
 }  
 $this->createthumb($saveAs, $thumbSaveAs, $value[‘width’], $value[‘height’]);  
 }  
 }

 // Update model data  
 $model->data[$model->name][$options[‘fields’][‘dir’]] = $options[‘dir’];  
 $model->data[$model->name][$options[‘fields’][‘mimetype’]] = $model->data[$model->name][$fieldName][‘type’];  
 $model->data[$model->name][$options[‘fields’][‘filesize’]] = $model->data[$model->name][$fieldName][‘size’];  
 $model->data[$model->name][$fieldName] = $model->data[$model->name][$fieldName][‘name’];  
 }  
 return true;  
 }

 /*\*  
 \* Deletes the files marked to be deleted in the save method. A file can be marked to be deleted if it is overwriten by another or if the user mark it to be deleted.  
 \*  
 \* @author Vinicius Mendes  
 \* @param $model Object  
 \*/  
 function afterSave(&amp;$model) {  
 foreach($this->__filesToRemove as $file){  
 if($file[‘name’])  
 $this->_deleteFiles($file[‘name’], $file[‘dir’]);  
 }  
 // Reset the filesToRemove array  
 $this->__filesToRemove = array();  
 }

 /*\*  
 \* Deletes all files associated with the record beforing delete it.  
 \*  
 \* @author Vinicius Mendes  
 \* @param $model Object  
 \*/  
 function beforeDelete(&amp;$model) {  
 $model->read(null, $model->id);  
 if(isset($model->data)) {  
 foreach($this->__fields as $field=>$options) {  
 $file = $model->data[$model->name][$field];  
 if($file &amp;&amp; $file != $options[‘default’])  
 $this->_deleteFiles($file, $options[‘dir’]);  
 }  
 }  
 return true;  
 }

 /*\*  
 \* Delete the $filename inside the $dir and the thumbnails.  
 \* Returns true if the file is deleted and false otherwise.  
 \*  
 \* @author Vinicius Mendes  
 \* @return boolean  
 \* @param $filename Object  
 \* @param $dir Object  
 \*/  
 function _deleteFiles($filename, $dir){  
 $saveAs = $dir . DS . $filename;  
 if(is_file($saveAs) &amp;&amp; !unlink($saveAs))  
 {  
 return false;  
 }  
 $folder = &amp;new Folder($dir);  
 $files = $folder->find(‘thumb\\.[a-zA-Z0-9]+\\.’.$filename);  
 foreach($files as $f) unlink($dir.DS.$f);  
 return true;  
 }

 // Function to create thumbnail image  
 // This requires Nate Constant’s thumbnail generator for PHPThumb  
 // https://bakery.cakephp.org/articles/view/phpthumb-component  
 // Thi function is original from digital spaghetti’s version  
 /*function createthumb($name, $filename, $new_w, $new_h)  
 {  
 App::import(‘Component’, ‘Thumb’);  
 $system = explode(".", $name);

 if (preg_match("/jpg|jpeg/", $system[1]))  
 {  
 $src_img = imagecreatefromjpeg($name);  
 }

 if (preg_match("/png/", $system[1]))  
 {  
 $src_img = imagecreatefrompng($name);  
 }

 $old_x = imagesx($src_img);  
 $old_y = imagesy($src_img);

 if ($old_x >= $old_y)  
 {  
 $thumb_w = $new_w;  
 $ratio = $old_y / $old_x;  
 $thumb_h = $ratio \* $new_w;  
 } else if ($old_x < $old_y) {  
 $thumb_h = $new_h;  
 $ratio = $old_x / $old_y;  
 $thumb_w = $ratio \* $new_h;  
 }

 $dst_img = imagecreatetruecolor($thumb_w, $thumb_h);  
 imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);

 if (preg_match("/png/", $system[1]))  
 {  
 imagepng($dst_img, $filename);  
 } else {  
 imagejpeg($dst_img, $filename);  
 }

 imagedestroy($dst_img);  
 imagedestroy($src_img);  
 }\*/

 /*\*  
 \* Création d’un aperçu d’image  
 \*  
 \* @param $name String Nom du fichier sur le serveur  
 \* @param $filename String Nom final du fichier  
 \* @param $new_w Int Largeur en px  
 \* @param $new_h Int Hauteur en px  
 \* @param $zc Bool "Zoom crop" (si vrai, découpe le plus grand carré possible au centre de l’image)  
 \*/  
 function createthumb($name, $filename, $new_w, $new_h, $zc)  
 {  
 App :: import(‘Vendor’, ‘phpThumb’, array(‘file’ => ‘phpThumb’ . DS . ‘phpthumb.class.php’));

 $phpThumb = new phpThumb();  
 $phpThumb->setSourceFilename($name);  
 $phpThumb->setParameter(‘w’, $new_w);  
 $phpThumb->setParameter(‘h’, $new_h);  
 $phpThumb->setParameter(‘zc’, $zc);

 $phpThumb->generateThumbnail();  
 $phpThumb->RenderToFile($filename);  
 }

}