Symfony 1.4 doctrine model object data retrieve issue - doctrine

Question

In my symfony 1.4 application i'm using doctrine data models.I'm new to symfony and doctrine.I generated doctrine models from command-line after defining database table information in the schema.yml file.Those generated successfully.Then i created a custom function inside Table.class.php file.Following is that.
class Table extends BaseTable
{
public function getuname()
{
$user=new Table();
$uname=$user->getUsername();
return $uname;
}
}
I want to know how to call this inside the controller ? I called it normal MVC application's way.But i don't know whether it's correct in symfony.In symfony 1.4 manual also i couldn't find a proper way to do this.
This is my controller.
class loginActions extends sfActions
{
public function executeIndex(sfWebRequest $request)
{
$this->userdata = User::getuname();
}
}
Then i tried to print this inside view.
<?php
echo $userdata;
?>
But view is showing an empty page.
Update with exception details--------------------------------
stack trace
at ()
in SF_SYMFONY_LIB_DIR\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Connection.php line 1082 ...
$message .= sprintf('. Failing Query: "%s"', $query);
}
$exc = new $name($message, (int) $e->getCode());
if ( ! isset($e->errorInfo) || ! is_array($e->errorInfo)) {
$e->errorInfo = array(null, null, null, null);
}

Answer 1

When using Doctrine you retrieve objects from the database using the ...Table classes (in your case it will be a TableTable class. You can use its' methods to fetch objects from DB (e.g. find($id)) and then access them. So in your case your classes should something like this:
class Table extends BaseTable
{
public function getuname()
{
return $this->getUsername();
}
}
Now it effectively becomes just an alias of getUsername().
Then in your action:
class loginActions extends sfActions
{
public function executeIndex(sfWebRequest $request)
{
$user = Doctrine_Core::getTable('Table')->find(123);
$this->userdata = $user->getuname();
}
}
This will print the username in your template (assuming of course that you have a user with id 123).