* requires ’content’ field that is a blob (mediumblob or longblob), and
* ’ext’ varchar(10) field and

* ’modified’ datetime field
* @author Grzegorz Pawlik
* @version 1.0
*/
class ImageBehavior extends ModelBehavior {

/**
* directory in which cached files will be stored
*
* @var string
*/
var $cacheSubdir = ‘filecache’;

/**
* if set to false - never check if cached file is present (nor actual)
*

* @var bool
*/
var $usecache = true;

function setup(&$Model) {
// no setup at this time

}

/**
* Insert proper blob when standard data after upload is present
*
* @param object $Model

* @return bool true
*/
function beforeSave(&$Model) {

if(isset($Model->data[$Model->name]['file']['tmp_name']) && is_uploaded_file($Model->data[$Model->name]['file']['tmp_name'])) {

// podnieś wyżej parametry
$Model->data[$Model->name] = array_merge($Model->data[$Model->name], $Model->data[$Model->name]['file']);

// przygotuj blob
$this->_prepareBlob($Model);

$this->_getExt($Model);
}

return true;
}

/**
* prepares blob contents
*
* @param object $Model

*/
function _prepareBlob(&$Model) {
App::import(‘Core’, ‘File’);
$file = new File($Model->data['Medium']['tmp_name'], false);

$content = $this->addSlashes( $file->read() );
$Model->data[$Model->name]['content'] = $content;

}

/**
* Get uploaded file extension
*
* @param object $Model
*/
function _getExt(&$Model) {

$file = explode(‘.’, $Model->data['Medium']['name']);
$ext = array_pop($file);

$Model->data[$Model->name]['ext'] = $ext;
}

/**
* replace blob contents with file path

* After reading database checks if cached file is present. If not creates it (from blob contents) and

* returns a ’file’ field with path relative to /app/webroot/img
*
*
* @param object $model

* @param array $results
* @param unknown_type $primary
* @return unknown
*/
function afterFind(&$model, $results, $primary) {

foreach($results as $key => $val) {

$relpath = $this->cacheSubdir . DS .

$val[$model->name]['id'] . ‘_’ . $model->name . ‘_’ .

$val[$model->name]['modified'] . ‘.’ . $val[$model->name]['ext'];

$relpath = str_replace( array(‘ ’, ‘:’) , ‘_’, $relpath);

$fullpath = IMAGES . $relpath;

if(!file_exists($fullpath) || !$this->usecache ) {
file_put_contents($fullpath, $this->stripSlashes($results[$key][$model->name]['content']));

}

$results[$key][$model->name]['file'] = $relpath;
// remove blob from results (its messy when You want to output results in debug)

unset($results[$key][$model->name]['content']);
}
return $results;
}

/**
* add slashes (just wrapper)
*
* @param string $string
* @return string with slashes
*/

function addSlashes($string) {
return addslashes($string);
}

/**
* strip slashes (just wrapper)

*
* @param string $string
* @return string without slashes
*/
function stripSlashes($string) {

`ext` varchar(10) NOT NULL,
`content` longblob NOT NULL,
`size` int(11) NOT NULL,
`created` datetime NOT NULL,
`modified` datetime NOT NULL,

var $name = ‘Medium’;
var $actsAs = array(‘Image’);

var $name = ‘Media’;
var $helpers = array(‘Html’, ‘Form’);
function index() {

$this->set(‘media’, $this->Medium->findAll());
}

function add() {
if(!empty($this->data)) {
$this->Medium->save($this->data);

}
}

‘action’ => ‘add’
),
‘enctype’ => ‘multipart/form-data’
)
);
?>