php - CakePHP 即时切换数据库(使用相同的数据源)？

Question

我试图构建一个小函数，用于在 Controller 中动态切换数据库，我必须只使用一个数据源。

在我的 database.php 上:

function __construct() {

    $server = Configure::read('Server');

    if(!empty($server['database'])) $this->local['database'] = $server['database'];
    $this->default = $this->{$server['datasource']};

}

用于根据服务器配置切换数据库。效果很好。

我试着建立这个:

/**
 * Connects to specified database
 *
 * @param array $config Server config to use {datasource:?, database:?}
 * @return array db->config on success, false on failure
 * @access public
 */
function dbConnect($config = array()) {
    ClassRegistry::init('ConnectionManager');
    //debug($config['datasource']);
    //$dbInstance =& ConnectionManager::getInstance();
    //$dbInstance->config->{$config['datasource']}['database'] = $config['database'];

    $db =& ConnectionManager::getDataSource($config['datasource']);
    $db->disconnect();
    $db->cacheSources = false;
    $db->config['database'] = $config['database'];
    $db->config['persistent'] = false;
    debug($db->config);
    $db->connect();
    if(!$db->isConnected()) {
        $this->error('!$db->isConnected()');
        return false;
    }
    return $db->config;
}

但遗憾的是，一切似乎都正常，但我总是使用 $this->Player->find('list') 从同一个数据库获取数据。我尝试了 $this->Player->cacheQueries = false; 但没有成功。

Answer 1

使用它使其工作(即时创建新连接):

$newDbConfig = $this->dbConnect($serverConfig);
$this->Model->useDbConfig = $newDbConfig['name'];
$this->Model->cacheQueries = false;

与:

/**
 * Connects to specified database
 *
 * @param array $config Server config to use {datasource:?, database:?}
 * @return array db->config on success, false on failure
 * @access public
 */
function dbConnect($config = array()) {
    ClassRegistry::init('ConnectionManager');

    $nds = $config['datasource'] . '_' . $config['database'];
    $db =& ConnectionManager::getDataSource($config['datasource']);
    $db->setConfig(array('name' => $nds, 'database' => $config['database'], 'persistent' => false));
    if($ds = ConnectionManager::create($nds, $db->config)) return $db->config;
    return false;

}