Drop down menu in codeigniter displays nothing - php

Question

I'm having some trouble displaying the values retrieved from a db and displaying them in a dropdown menu, using codeigniter. The code is as follows:
Controller:
<?php
class AuthorSignupC extends CI_Controller
{
function index()
{
$this->load->model('AuthorSignupM');
$this->load->helper(array('form', 'url'));
$this->load->library('form_validation');
$data['title']= 'All Conferences';
$data['groups'] = $this->AuthorSignupM->ViewAllConf();
$this->load->view('AuthorSignup', $data);
}
}
Model:
<?php
class AuthorSignupM extends CI_Model
{
function ViewAllConf()
{
$this->db->select('ConfLName');
$this->db->from('conference');
//$query = $this->db->query('SELECT ConfLName FROM conference');
$query = $this->db->get();
return $query->result();
}
}
?>
View:
<select class="form-control">
<?php
foreach($groups as $row)
{
echo '<option value="'.$row->description.'">'.$row->description.'</option>';
}
?>
</select>

Answer 1

You're selecting just one column:
$this->db->select('ConfLName');
$this->db->from('conference');
but retrieving 'description', and I guess your error reporting is set too low to show you the error.
You should loop over confLName (or use $this->db->select('description');)
<select class="form-control">
<?php foreach($groups as $row) : ?>
<option value="<?php echo $row->ConfLName;?>"><?php echo $row->ConfLName;?></option>
<?php endforeach;?>
</select>