function changeDataSource($newSource)
{
parent::setDataSource($newSource);
}

then in my controller:

$db = ConnectionManager::getInstance();
$connected = $db->getDataSource(‘master’);

$connectionTest = $connected->isConnected();

if($connectionTest == true)
{
$write_dB = ‘master’;
$read_dB = ‘slave’;
}else{
$write_dB = $read_dB = ‘scratch’;
}

// CHANGE TO THE WRITE (MASTER) dB
$this->Test->changeDataSource($write_dB);
$temp = $this->Test->findAll();
echo “This would be the database we are writing to: “;
echo var_dump($temp);
echo “”;

// CHANGE TO THE READ (SLAVE) dB
$this->Test->changeDataSource($read_dB);
$temp = $this->Test->findAll();
echo “This would be the database we are reading from: “;
echo var_dump($temp);

works beautiful is my primary write server goes down everything switches to my scratch dB and while everything is working good I have access to use both my write and read configs on will just by dynamically changing the datasource. I know that would have solved your problem dave as yours needed much more dynamic complexity but mine solves most peoples multi-dB type questions (at least I think)

class Test extends AppModel
{
var $name = ‘Test’;

function __construct()
{
$table = Inflector::tableize($this->name);
$db = ConnectionManager::getInstance();
$connected = $db->getDataSource(‘default’);
if($connected->isConnected() == true)
{
$ds = ‘default’;
}else{
$ds = ‘test’;
}
parent::__construct(false, $table, $ds);
}

}

I couldn’t get your point.
You know db names in every create operation, right?
If this is the situation, it would be quite better, open database.php add for added db and known parameters as db names and close to file :D
When db dropped, you could drop the records from database.php.
Anyway, your way is a way too :)

i have tried to implement your extended model, but it does not work…

but i have found another way, which is much easier than alot of people might think.

step 1.
edit app\config\database.php
—————————————————————
var $default = array(‘driver’ => ‘mysql’,
‘connect’ => ‘mysql_connect’,
‘host’ => ‘localhost’,
‘login’ => ‘USER1’,
‘password’ => ‘PASS1’,
‘database’ => ‘DB1’,
‘prefix’ => ‘’);

var $usersettings = array(‘driver’ => ‘mysql’,
‘connect’ => ‘mysql_connect’,
‘host’ => ‘localhost’,
‘login’ => ‘USER2’,
‘password’ => ‘PASS2’,
‘database’ => ‘DB2’,
‘prefix’ => ‘’);

—————————————————————

step 2.
make a controller called app\controller\v1_controller.php

—————————————————————
set(‘user’,$this->V1->find(‘User.username = $USERNAME’), array(‘User.*’, $order=’‘,0));
$this->set(‘usersettings’,$this->UserSetting->find(‘UserSetting.username = $USERNAME” , array(“UserSetting.*”), $order=’‘, 0));
}

}
?>
—————————————————————

step 3.
make another controller called app\controller\user_settings_controller.php
—————————————————————

—————————————————————

step 4.
make the model called app\model\v1.php
—————————————————————

—————————————————————

step 5.
make the model called app\model\user_setting.php
—————————————————————

—————————————————————

step 6.
make the views for v1 in app\views\v1\index.thtml
—————————————————————

that is all folks, now you have the following :
from within 1 controller, you access to another controller, which is accessing another DB! How cool is this?

this should get you guys going …..

tonight i will implement this and let you know if i have it working or not ;)