If form error how to keep on selected option in form_dropdown

On my view I have a form_dropdown with some options

PHP Code:

<div class="row">
<div class="col-sm-12">
<div class="form-group">
<label for="input_country">Country</label>
<?php 

$options[] = array();

foreach ($countries as $key => $value) {       
$options['0'] = '--- Select Country ---';
$options[$value['iso_code_2']] = $value['name'];
}

echo form_dropdown('country_id', $options, '', array('class' => 'form-control', 'id' => 'input_country'));

?>
</div>
</div>
</div> 


The iso code for Australia is AU

Question: If there is a error on form and have selected country how can I make sure it stays on the country so do not have to go through list again

PHP Code:

<?php defined('BASEPATH') OR exit('No direct script access allowed');

class Register extends CI_Controller 
{

public function __construct() 
{
parent::__construct();
$this->load->model('localisation/country_model');
}

public function index()
{
if (($this->input->server("REQUEST_METHOD") == 'POST') && $this->validate()) 
{
// Success form area
}

if ($this->input->post('username')) 
{
$data['username'] = $this->input->post('username');
} else {
$data['username'] = '';
}

if ($this->input->post('firstname')) 
{
$data['firstname'] = $this->input->post('firstname');
} else {
$data['firstname'] = '';
}

if ($this->input->post('lastname')) 
{
$data['lastname'] = $this->input->post('lastname');
} else {
$data['lastname'] = '';
}

if ($this->input->post('email')) 
{
$data['email'] = $this->input->post('email');
} else {
$data['email'] = '';
}

if ($this->input->post('password')) 
{
$data['password'] = $this->input->post('password');
} else {
$data['password'] = '';
}

$data['countries'] = $this->country_model->get_countries();

if ($this->input->post('country_id')) 
{
$data['country_id'] = $this->input->post('country_id');
} else {
$data['country_id'] = '';
}

$this->load->view('default/template/common/header', $data);
$this->load->view('default/template/account/register', $data);
$this->load->view('default/template/common/footer', $data);
}

public function validate() 
{
// Set the form validation rules

}
} 


Attached Files

  Register.php (Size: 1.58 KB / Downloads: 102)

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!

I think I have found my solution 

Because I have placed this on the controller 

PHP Code:

if ($this->input->post('country_id')) 
 {
$data['country_id'] = $this->input->post('country_id');
} else {
$data['country_id'] = '';
} 


All I need to do now is on the view in the third section

PHP Code:

echo form_dropdown('country_id', $options, $country_id, array('class' => 'form-control', 'id' => 'input_country')); 


I think I have it correct now

PHP Code:

<?php defined('BASEPATH') OR exit('No direct script access allowed');

class Register extends CI_Controller 
{

    public function __construct() 
    {
        parent::__construct();
        $this->load->model('localisation/country_model');
        $this->load->library('form_validation');
    }

    public function index()
    {
        if (($this->input->server("REQUEST_METHOD") == 'POST') && $this->validate()) 
        {
            // Success form area
        }

        if (isset($this->error['username'])) 
        {
            $data['error_username'] = $this->error['username'];
        } else {
            $data['error_username'] = '';
        }

        if (isset($this->error['password'])) 
        {
            $data['error_password'] = $this->error['password'];
        } else {
            $data['error_password'] = '';
        }

        if (isset($this->error['firstname'])) 
        {
            $data['error_firstname'] = $this->error['firstname'];
        } else {
            $data['error_firstname'] = '';
        }

        if (isset($this->error['lastname'])) 
        {
            $data['error_lastname'] = $this->error['lastname'];
        } else {
            $data['error_lastname'] = '';
        }

        if (isset($this->error['email'])) 
        {
            $data['error_email'] = $this->error['email'];
        } else {
            $data['error_email'] = '';
        }

        if (isset($this->error['country_id'])) 
        {
            $data['error_country'] = $this->error['country_id'];
        } else {
            $data['error_country'] = '';
        }

        if ($this->input->post('username')) 
        {
            $data['username'] = $this->input->post('username');
        } else {
            $data['username'] = '';
        }

        if ($this->input->post('firstname')) 
        {
            $data['firstname'] = $this->input->post('firstname');
        } else {
            $data['firstname'] = '';
        }

        if ($this->input->post('lastname')) 
        {
            $data['lastname'] = $this->input->post('lastname');
        } else {
            $data['lastname'] = '';
        }

        if ($this->input->post('email')) 
        {
            $data['email'] = $this->input->post('email');
        } else {
            $data['email'] = '';
        }

        if ($this->input->post('password')) 
        {
            $data['password'] = $this->input->post('password');
        } else {
            $data['password'] = '';
        }

        $data['countries'] = $this->country_model->get_countries();

        if ($this->input->post('country_id')) 
        {
            $data['country_id'] = $this->input->post('country_id');
        } else {
            $data['country_id'] = '';
        }

        $this->load->view('default/template/common/header', $data);
        $this->load->view('default/template/account/register', $data);
        $this->load->view('default/template/common/footer', $data);
    }

    public function validate() 
    {
        // Set the form validation rules

        $this->form_validation->set_rules('username', 'username', 'required');
        $this->form_validation->set_rules('firstname', 'firstname', 'required');
        $this->form_validation->set_rules('lastname', 'lastname', 'required');
        $this->form_validation->set_rules('email', 'email', 'required');
        $this->form_validation->set_rules('password', 'password', 'required');

        if ($this->form_validation->run() == false) 
        {

            if (form_error('username')) 
            {
                $this->error['username'] = form_error('username');
            }

            if (form_error('email')) 
            {
                $this->error['email'] = form_error('email');
            }

            if (form_error('firstname')) 
            {
                $this->error['firstname'] = form_error('firstname');
            }

            if (form_error('lastname')) 
            {
                $this->error['lastname'] = form_error('lastname');
            }

            if (form_error('password')) 
            {
                $this->error['password'] = form_error('password');
            }
        } 

        if ($this->input->post('country_id') === '0') {
            $this->error['country_id'] = 'You need to select your country';
        }

        return !$this->error;
    }
} 


Attached Files

  Register.php (Size: 3.59 KB / Downloads: 69)

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!