in controller
	var $components = array('Uploader.Uploader');
	in functia ta de save:
		    if(!empty($this->data['Project']['fileNameProject']['name']))
                    {
                        $name = $this->Project->id.'_'.rand(1,10);
                        $ext = '.'.$this->Uploader->ext($this->data['Project']['fileNameProject']['name']);
                        if ($data = $this->Uploader->upload('fileNameProject', array('overwrite' => true,'name' => $name )))
                        {
                            $this->Uploader->resize(array('width' => 800, 'append'=>'resize','quality' => 80));
                            $dest = 'uploaded/projects/'.$name.'resize'.$ext;
                            $old = 'uploaded/projects/'.$name.$ext;
                            $this->Uploader->rename($dest,$old,true);
                            $this->Uploader->delete($dest,true);
                            $this->Project->saveField('poza',$name.$ext);
                        }
                    }
in model:
var $actsAs = array(
        'Uploader.FileValidation' => array(
            'fileNameProject' => array(
                'extension' => array(
                    'value' => array('gif', 'jpg', 'png', 'jpeg'),
                    'error' => 'Mimetype incorrect',
                ),
                'required' => true
            )
)
);

in view:


echo $this->Form->input('fileNameProject',array('label'=>'Poza: ','type'=>'file','size'=>'10'));