Unknown column 'Free' in 'field list'

[eluser]rupin[/eluser]
I am encountering a strange error which I am not able to replicate with earlier version of Codeigniter (1.7)

The error I get is

Code:

A Database Error Occurred

Error Number: 1054

Unknown column 'Free' in 'field list'

INSERT INTO `devices` (`deviceIdentifier`, `installType`) VALUES (351863048175265, Free)

Filename: D:\wamp\www\Everythingelse\sieveSMS\system\database\DB_driver.php

Line Number: 330

My Controller code is as follows

Code:

$deviceID=$xmlString->deviceID;
            $appType=$xmlString->appType;
            $data = array(
                'deviceIdentifier' => $deviceID,
                'installType'=>$appType
            );
            $this->device_model->insert_new_device($data);

My model code is as follows

Code:

<?php

class device_model extends CI_Model
{
    function insert_new_device($lData)
    {
        $this->db->insert('devices', $lData);
        return $this->db->insert_id();
    }
}
?>

The two variables '$deviceID' and '$appType' have valid alphanumeric values.The columns 'deviceIdentifier' and 'installType' are varchar columns in table 'devices'

Has anyone encountered this error? when I add quotes around the variables '$deviceID' and '$appType', it works, but the value in the table also has the quotes.Do we need to process text data before inserting in the MySQL table via active record?

[eluser]kenjis[/eluser]
Put the code below in your controller:

Code:

var_dump($appType);

and what is in it?

[eluser]Eric Barnes[/eluser]
I would think this should fix it:

Code:

$deviceID = (int) $xmlString->deviceID;
$appType = (string) $xmlString->appType;

[eluser]rupin[/eluser]
var_dump($appType); echoes the following

object(SimpleXMLElement)#19 (1) { [0]=> string(4) "Free" }

As suggested by Eric Barnes casting worked!