Upload File in API not Working

*<?php $app->post('/uploadAction', function ( ) use ( $app ) {

function uploadAction()
{
    if ($this->request->hasFiles() == true) {
        $baseLocation = 'files/';

        foreach ($this->request->getUploadedFiles() as $file) {
            $photos = new Photo();              
            $photos->name = $file->getName();
            $photos->size = $file->getSize();
            $photos->save();

            $file->moveTo($baseLocation . $file->getName());
        }
    }
}

}); ?>

<form action="uploadAction" method="POST" enctype="multipart/form-data"> <label>File</label> <input type="file" name="upFile"> <input type="submit" name="upload"> </form>*

I want to upload the file to files directory but it's not working. Please help me