DMZ 1.7.1 (DataMapper OverZealous Edition)

[eluser]OverZealous[/eluser]
@NachoF

Why are you trying to save the object if there's an error uploading?

Code:

if ($this->upload->do_upload("url")) {
    $data = $this->upload->data();
    $a->url = $data['file_name'];
    if($a->save($t)) {
        $this->session->set_flashdata('success', 'Tip Creado');
        redirect("Welcome");
    }
} else {
    $a->error_message('custom', $this->upload->display_errors());
}

Otherwise, what you are trying to do doesn't make sense, anyway: if there are any validation errors, DMZ won't save the object. This means, if you set an error manually, (and the errors weren't cleared) DMZ would never save. (That's why it clears the errors before validating.)