Multiple Upload - Upload Lebih Dari 1 File Gambar Codeigniter

Assalam,.. seperti ini caranya gan :
 
File 1 <input type="file" name="userfile">
Fiel 2 <input type="file" name="userfile2">
 
public function save() {
  $data = array();
  $config['upload_path'] = './uploads/';
  $config['allowed_types'] = 'jpg|png';
  $config['max_size'] = 5024;
  $config['encrypt_name'] = true;  
 
  $this->load->library('upload', $config);
 
  if (!$this->upload->do_upload('userfile')) {
    $error = array('error' => $this->upload->display_errors());
  } else {
    $fileData = $this->upload->data();
    $data['userfile'] = $fileData['file_name'];
  }
 
  if (!$this->upload->do_upload('userfile2')) {
    $error = array('error' => $this->upload->display_errors()); 
  } else {
    $fileData = $this->upload->data();
    $data['userfile2'] = $fileData['file_name'];
  }
}

saya sudah coba cara di atas.
image berhasi terupload tp tidak bisa masuk ke database mas.
mohon pencerahannya.

cuma membantu, tambahkan return di array data nya bang.
  if (!$this->upload->do_upload('userfile')) {
    $error = array('error' => $this->upload->display_errors());
  } else {
    $fileData = $this->upload->data();
    return $data['userfile'] = $fileData['file_name'];
  }
 
  if (!$this->upload->do_upload('userfile2')) {
    $error = array('error' => $this->upload->display_errors()); 
  } else {
    $fileData = $this->upload->data();
    return $data['userfile2'] = $fileData['file_name'];
  }

Assalamualaikum,..  Bagaimana jika nama file di folder upload (direktori temporer) berbeda dengan nama file yg terinput di database. contohnya : nama file di database " gbr1.jpg" di folder upload " ef75cfabf44a93d12ac528ec8e5261ad.jpg"