Zend Framework: Initialize session (Database) error - php

Question

Fatal error: Uncaught exception 'Zend_Db_Table_Exception' with message
'No adapter found for Zend_Session_SaveHandler_DbTable' in
C:\wamp\www\hol\library\Zend\Db\Table\Abstract.php on line 755 ( ! )
Zend_Db_Table_Exception: No adapter found for
Zend_Session_SaveHandler_DbTable in
C:\wamp\www\hol\library\Zend\Db\Table\Abstract.php on line 755 Call
Stack
Time Memory Function Location 1 0.0005 373664 {main}( ) ..\init.php:0
2 0.0325 2749720 Zend_Session_SaveHandler_DbTable->__construct(
) ..\init.php:40 3 0.0325 2750168 Zend_Db_Table_Abstract->__construct(
) ..\DbTable.php:207
4 0.0325 2750480 Zend_Session_SaveHandler_DbTable->_setup(
) ..\Abstract.php:268 5 0.0325 2750480 Zend_Db_Table_Abstract->_setup(
) ..\DbTable.php:403
6 0.0325 2750480 Zend_Db_Table_Abstract->_setupDatabaseAdapter(
) ..\Abstract.php:739
Code:
//Configuration consumption
$config = new Zend_Config(require 'config.php');
//Database configuration
$db = Zend_Db::factory($config->database->adapter, array(
'host' => $config->database->params->host,
'username' => $config->database->params->username,
'password' => $config->database->params->password,
'dbname' => $config->database->params->dbname
));
$sess_config = array(
'name' => 'session',
'primary' => array(
'session_id',
'save_path',
'name',
),
'primaryAssignment' => array(
'sessionId',
'sessionSavePath',
'sessionName',
),
'modifiedColumn' => 'modified',
'dataColumn' => 'session_data',
'lifetimeColumn' => 'lifetime',
);
Zend_Session::setSaveHandler(new Zend_Session_SaveHandler_DbTable($sess_config));
//Initialize the session
Zend_Session::start();
config
<?php
// config.php
return array(
'database' => array(
'adapter' => 'Pdo_Mysql',
'params' => array(
'host' => 'localhost',
'username' => 'root',
'password' => '',
'dbname' => 'hol'
)
),
'session' => array(
'name' => 'session',
'primary' => array(
'session_id',
'save_path',
'name',
),
'primaryAssignment' => array(
'sessionId',
'sessionSavePath',
'sessionName',
),
'modifiedColumn' => 'modified',
'dataColumn' => 'session_data',
'lifetimeColumn' => 'lifetime'
)
);
SQL:
CREATE TABLE `session` (
`session_id` char(32) NOT NULL,
`save_path` varchar(32) NOT NULL,
`name` varchar(32) NOT NULL DEFAULT '',
`modified` int,
`lifetime` int,
`session_data` text,
PRIMARY KEY (`Session_ID`, `save_path`, `name`)
);

Answer 1

You didn't post the contents of your config.php, but based on the error I suspect you did not specify an adapter (mysql, pdo, etc).
My config file looks something like (yaml):
database:
adapter: Pdo_Mysql
params:
host: myhost
dbname: mydb
username: myusername
password: mypassword
According to the Zend API docs, you have to specify the adapter like this:
// Set this before you make the call to setSaveHandler()
Zend_Db_Table_Abstract::setDefaultAdapter($db);
Zend_Session::setSaveHandler(new Zend_Session_SaveHandler_DbTable($sess_config));

Answer 2

You either need to call Zend_Db_Table_Abstract::setDefaultAdapter($db) providing the $db object you created in your configuration example, as it appears you don't have a default DB adapter set up given the error, or you need to add the $db object to the $sess_config array so it gets set up as the DB adapter for Zend_Session.
Zend_Session_SaveHandler_DbTable extends Zend_Db_Table_Abstract and any options unknown to Zend_Session_SaveHandler_DbTable (e.g. database configuration options) are then passed to the constructor of Zend_Db_Table_Abstract which sets up the DbTable.
Try this:
$sess_config = array(
'db' => $db, // Pass the $db adapter as the 'db' parameter to Zend_Db_Table_Abstract
'name' => 'session',
'primary' => array(
'session_id',
'save_path',
'name',
),
'primaryAssignment' => array(
'sessionId',
'sessionSavePath',
'sessionName',
),
'modifiedColumn' => 'modified',
'dataColumn' => 'session_data',
'lifetimeColumn' => 'lifetime',
);