$configuration = ProjectConfiguration::getApplicationConfiguration('frontend', 'test', false);
$databaseManager = new sfDatabaseManager($configuration);


Doctrine_Core::loadModels(dirname(__FILE__).'/../../../lib/model');

$models = Doctrine::getLoadedModels();

$connections = array();
foreach ($models as $model) {
  $connections[Doctrine::getTable($model)->getConnection()->getName()][] = $model;
}

Doctrine_Manager::connection()->execute('SET FOREIGN_KEY_CHECKS = 0');
foreach ($connections as $connection => $models) {
    $models = Doctrine_Manager::getInstance()->getConnection($connection)->unitOfWork->buildFlushTree($models);
    $models = array_reverse($models);
    foreach ($models as $model) {
        Doctrine::getTable($model)->getConnection()->getDbh()->query("SET FOREIGN_KEY_CHECKS=0;");
        Doctrine::getTable($model)->createQuery()->delete()->execute();
    }
}

Doctrine_Core::loadData(sfConfig::get('sf_test_dir').'/fixtures');
Doctrine_Manager::connection()->execute('SET FOREIGN_KEY_CHECKS = 1');

Empty tables and reload data in Doctrine

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