issue getting the value from database to combobox - mysql

Question

This is my controller:
<?PHP
class combobox extends CI_Controller
{
function dynamic_combobox()
{
$this->load->model('combobox_model');
$data['college'] = $this->combobox_model->getcollege();
$this->load->view('header', $data);
$this->load->view('left_menu', $data);
$this->load->view('manage_user', $data);
$this->load->view('footer', $data);
}
}
?>
This is my model:
$this->db->get('colleges');
$data = array();
if ($query->num_rows() > 0) {
foreach ($query->result_array() as $row){ $data[] = $row; }
}
$query->free_result();
return $data;
This is my view:
<form action="<?php echo site_url(''); ?>" method="post">
College
<select name="id" id="id" style="width: 350px;">
<option class="droplist">Please select colleges</option>
<?
if (count($college)>0)
{
foreach ($college as $row)
{
echo "<option value='". $row['college_id'] . "'>" . $row['college_name'] . "</option>";
}
}
?>
</select>
Courses
<select>
<!--<option>UG</option>
<option>PG</option>-->
</select>
<input class="button" type="button" value="Refresh"/>
</form>

Answer 1

Try if it works or not, Your model:
$rs = $this->db->get('colleges');
$data = array();
if ($query->num_rows() > 0) {
$data = $rs->result_array();
}
$query->free_result();
return $data;
Your View:
if (count($college)>0){
foreach ($college as $row){
echo "<option value='". $row['college_id'] . "'>" . $row['college_name'] . "</option>";
}
}
Edit 1:
$arr[] = array('college_id' => '1', 'college_name' => 'Nadar Saraswathi College of Engineering and Technology', 'status' => '1', 'created_by' => '1', 'modified_by' => '1', 'created_date' => '2012-09-30 22:51:25', 'modified_date' => '2012-09-30 22:50:28' );
print_r($arr);
echo "<select>";
foreach ($arr as $row){
echo "<option value='". $row['college_id'] . "'>" . $row['college_name'] . "</option>";
}
echo "</select>";

Answer 2

i think you missed to add $query in your model
$query=$this->db->get('colleges'); //<---- here notice $query=
$data = array();
if ($query->num_rows() > 0) {
$data=$query->result_array(); //<--no need of using loop as you are already looping it in you view
}
$query->free_result();
return $data;