@ luan-loved what you can do is first create a link table between the user and the document.
Sample Table:
CREATE TABLE 'viculo' (
'id_vinculo' int(11) NOT NULL AUTO_INCREMENT,
'id_documento' int(11) NOT NULL,
'id_usuario' int(11) NOT NULL,
PRIMARY KEY ('id_vinculo')
);
And then in Codeigniter's "controler" in the function that you use to handle the download, before downloading, you load a "model" that will have access to the "link" table, and call a function in the "model "which checks whether the user has a link to this document, this function returns TRUE or FALSE.
Sample Model
class Viculo_Model extends CI_Model{
var $table = 'vinculo';
public function verificar_vinculo($documento,$usuario){
$this->db->where('id_documento =', $documento);
$this->db->where('usuario =', $documento);
$this->db->get($this->table);
$query = $this->db->get('usuarios');
$vinculo = $query->row(0);
if(!$usuario) return false;
return true;
}
}
If TRUE continues with the download, if FALSE redirects the user to a "view" informing the user that he is not allowed to download.
Controler Example
$this->load->model('vinculo_model');
$vinculo = $this->vinculo_model->verificar_vinculo($documento,$usuario);
if ($vinculo) {
// coloque aqui o a função de realiza o download
} else {
// carrega view informando que o usuário não tem permissão
$this->load->view('sem_permisao', $data);
}
