public function thumbnail($name)
    {
        $this->loadModel('Field.FieldInstances');
        $instance = $this->_getInstance($name);

        if (!$instance) {
            throw new NotFoundException(__d('field', 'Invalid field instance.'), 400);
        }

        if (empty($this->request->query['file'])) {
            throw new NotFoundException(__d('field', 'Invalid file name.'), 400);
        }

        if (empty($this->request->query['size'])) {
            throw new NotFoundException(__d('field', 'Invalid image size.'), 400);
        }

        $imagePath = normalizePath(WWW_ROOT . "/files/{$instance->settings['upload_folder']}/{$this->request->query['file']}");
        $tmb = ImageToolbox::thumbnail($imagePath, $this->request->query['size']);

        if ($tmb !== false) {
            $this->response->file($tmb);

            return $this->response;
        }

        throw new NotFoundException(__d('field', 'Thumbnail could not be found, check write permissions?'), 500);
    }
public function thumbnail($name)
    {
        $this->loadModel('Field.FieldInstances');
        $instance = $this->_getInstance($name);

        if (!$instance) {
            throw new NotFoundException(__d('field', 'Invalid field instance.'), 400);
        }

        if (empty($this->request->query['file'])) {
            throw new NotFoundException(__d('field', 'Invalid file name.'), 400);
        }

        if (empty($this->request->query['size'])) {
            throw new NotFoundException(__d('field', 'Invalid image size.'), 400);
        }

        $imagePath = normalizePath(WWW_ROOT . "/files/{$instance->settings['upload_folder']}/{$this->request->query['file']}");
        $tmb = ImageToolbox::thumbnail($imagePath, $this->request->query['size']);

        if ($tmb !== false) {
            $this->response->file($tmb);

            return $this->response;
        }

        throw new NotFoundException(__d('field', 'Thumbnail could not be found, check write permissions?'), 500);
    }
public function thumbnail ( $ name ) { $ this -> loadModel ( 'Field.FieldInstances' ) ; $ instance = $ this -> _getInstance ( $ name ) ; if ( ! $ instance ) { throw new NotFoundException ( __d ( 'field' , 'Invalid field instance.' ) , 400 ) ; } if ( empty ( $ this -> request -> query [ 'file' ] ) ) { throw new NotFoundException ( __d ( 'field' , 'Invalid file name.' ) , 400 ) ; } if ( empty ( $ this -> request -> query [ 'size' ] ) ) { throw new NotFoundException ( __d ( 'field' , 'Invalid image size.' ) , 400 ) ; } $ imagePath = normalizePath ( WWW_ROOT . "/files/{$instance->settings['upload_folder']}/{$this->request->query['file']}" ) ; $ tmb = ImageToolbox :: thumbnail ( $ imagePath , $ this -> request -> query [ 'size' ] ) ; if ( $ tmb !== false ) { $ this -> response -> file ( $ tmb ) ; return $ this -> response ; } throw new NotFoundException ( __d ( 'field' , 'Thumbnail could not be found, check write permissions?' ) , 500 ) ; }
Returns an scaled version of the given file image.

The following GET variables must be set on request:

- file: The image's file name to scale.
- size: A preview size name, sett `ImageToolbox::getPreviews()`

If any of these variables is not present an exception will be throw.

@param string $name EAV attribute name
@return \Cake\Network\Response
@throws \Cake\Network\Exception\NotFoundException When field instance
is not found.
Returns an scaled version of the given file image .