public function serve($model = null, $id = null, $field = null, $size = null)
{
if (is_null($model) or is_null($id) or is_null($field) or is_null($size)) {
throw new NotFoundException();
}
$this->loadModel($model);
// remove modified
$modified = substr($size, 0, 10);
$size = substr($size, 10);
if (!class_exists($model)) {
throw new NotFoundException($model . ' does not exist');
}
if (!$this->{$model}->hasField($field)) {
throw new NotFoundException($field . ' field does not exist');
}
$dataset = $this->{$model}->find('first', array('conditions' => array($model . '.' . $this->{$model}->primaryKey => intval($id)), 'fields' => array($field)));
if (empty($dataset)) {
throw new NotFoundException('File does not exist');
}
$fileHandler = new BlobFileHandler();
$fileHandler->loadFromString($dataset[$model][$field]);
if (!$fileHandler->isImage()) {
throw new NotFoundException('not an image');
}
$sizes = Configure::read('DatabaseBlobFile.sizes');
if (isset($sizes[pathinfo($size, PATHINFO_FILENAME)])) {
$fileHandler->modify($sizes[pathinfo($size, PATHINFO_FILENAME)][0], $sizes[pathinfo($size, PATHINFO_FILENAME)][1]);
// filter
if (isset($sizes[pathinfo($size, PATHINFO_FILENAME)][2]) and is_array($sizes[pathinfo($size, PATHINFO_FILENAME)][2])) {
foreach ($sizes[pathinfo($size, PATHINFO_FILENAME)][2] as $filter) {
$fileHandler->filter($filter);
}
}
}
switch (strtolower(pathinfo($size, PATHINFO_EXTENSION))) {
case 'jpg':
case 'jpeg':
$file = $fileHandler->store(null, IMAGETYPE_JPEG, 90);
$fileType = 'image/jpeg';
break;
case 'png':
$file = $fileHandler->store(null, IMAGETYPE_PNG);
$fileType = 'image/png';
break;
case 'gif':
$file = $fileHandler->store(null, IMAGETYPE_GIF);
$fileType = 'image/gif';
break;
default:
throw new NotFoundException('invalid extentions');
}
// copy file to webroot for better caching
if (!is_dir(WWW_ROOT . pathinfo($this->request->url, PATHINFO_DIRNAME)) and !file_exists(WWW_ROOT . pathinfo($this->request->url, PATHINFO_DIRNAME))) {
mkdir(WWW_ROOT . pathinfo($this->request->url, PATHINFO_DIRNAME), 0777, true);
}
file_put_contents(WWW_ROOT . $this->request->url, $file);
$this->response->body($file);
$this->response->type($fileType);
return $this->response;
}
