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  • Catchable fatal error: Argument 1 passed to Zend_Auth_Adapter_DbTable::__construct()

Trying to build up a login scrip and this should work however i get a persistent error that crashes the script. I am not quite sure what is causing this.

Notice: Undefined index: DB in /Sites/dev/application/controllers/LoginController.php on line 34

Catchable fatal error: Argument 1 passed to Zend_Auth_Adapter_DbTable::__construct() must be an instance of Zend_Db_Adapter_Abstract, null given, called in Sites/dev/application/controllers/LoginController.php on line 36 and defined in Sites/dev/library/Zend/Auth/Adapter/DbTable.php on line 128

<?php

/*
	Login Authentication method
*/
require_once 'Zend/Controller/Action.php';
require_once 'Zend/Auth.php';
require_once 'Zend/Auth/Adapter/DbTable.php';

class LoginController extends Zend_Controller_Action
{
    public function indexAction()
    {
    	/*
    		Function displays the login forum
    	*/
		$request = $this->getRequest();  

		$this->view->assign('action', $request->getBaseURL()."/login/auth");	// Submit buttons action
		$this->view->assign('title', 'Login Form');								// Page Title
		$this->view->assign('username', 'User Name');							// Username
		$this->view->assign('password', 'Password');							// Password
   	}

public function authAction()
{
	/*
		Login Authentication
	*/

	$request 	= $this->getRequest();
	$registry 	= Zend_Registry::getInstance();
	$auth		= Zend_Auth::getInstance(); 

	$db = $registry['DB'];

	$authAdapter = new Zend_Auth_Adapter_DbTable($db);
	$authAdapter->setTableName('users')->setIdentityColumn('username')->setCredentialColumn('password');    

	/*
		Pass data though validation
	*/
	$uname = $request->getParam('username');
	$paswd = $request->getParam('password');
	$authAdapter->setIdentity($uname);
	$authAdapter->setCredential(md5($paswd));

	/*
		Authenticate the user
	*/
	$result = $auth->authenticate($authAdapter);
	if ($result->isValid())
	{
		$data = $authAdapter->getResultRowObject(null,'password');
		$auth->getStorage()->write($data);
		$this->_redirect('/index/welcome/');
	}
	else
	{
		$this->_redirect('/login/');
	}
}   	
}
?>

    The root cause would appear to be that there is no key named 'DB' in the $registry array set a few lines before that. Do a print_r($registry) to find out what the actual key is, and remember that they are case-sensitive. In the bigger scheme of things, you could add some error-checking to make sure it is set and not empty before making that call to Zend_Auth_Adapter_DbTable($db), and also consider using a try/catch block in order to catch any such exceptions and handle them more "gracefully."

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