Codeigniter validation errors

Question

I have a site develop in codeigniter. I want to validate a form and display some message. With my code I don't see any error if my input "name_it" is blank. Why? This is my controller:

public function nation_create()
    {
        if($_POST)
        {
            //salvo i dati
            $this->load->library('form_validation');
            $this->form_validation->set_error_delimiters('<p class="error">Errore: ', '</p>');
            $this->form_validation->set_rules('name_it', 'name_it', 'required');
            if ($this->form_validation->run() !== FALSE){
                $this->Nation_model->createNation();
                redirect('backend/nation/nation_list/');
            }
            else{
                $data['errors'] = validation_errors();
                $this->load->view('backend/include/header_view_logged');
                $this->load->view('backend/nation_create_view',$data);  
                $this->load->view('backend/include/footer_view');
            }
        }
        else{
            $this->load->view('backend/include/header_view_logged');
            $this->load->view('backend/nation_create_view');    
            $this->load->view('backend/include/footer_view');
        }
    }

And this is my view (I have cut more code to read well)

<form action='' method='POST'>
   <?php echo validation_errors(); 
   if (isset($errors))
      echo $errors;
   ?>
   <?php echo form_error('name_it'); ?>
   <input type="text" name="name_it" />
   <span id="errorsDiv_name_it"></span>
</form>

Solution

The problem was in the class error with attribute display:none

Comments

[Alessandro Minoccheri]

Is the same control! Is the same thing that I have already done, you have only change !== FALSE isn't that the problem

[tomexsans]

what i am telling you is the if($_POST) and $this->form_validation()->run() is the same you are having redundant code