I was trying to read and understand some joomla core PHP code when I came across this function. It is located in libraries/joomla/table/table.php line 268. At the end of the function in line 305, it returns an object created by $tableClass
, what I don't understand is, where is this $tableClass
class defined? Following is a complete list of the function:
public static function getInstance($type, $prefix = 'JTable', $config = array())
{
// Sanitize and prepare the table class name.
$type = preg_replace('/[^A-Z0-9_\.-]/i', '', $type);
$tableClass = $prefix . ucfirst($type);
// Only try to load the class if it doesn't already exist.
if (!class_exists($tableClass))
{
// Search for the class file in the JTable include paths.
jimport('joomla.filesystem.path');
$paths = self::addIncludePath();
$pathIndex = 0;
while (!class_exists($tableClass) && $pathIndex < count($paths))
{
if ($tryThis = JPath::find($paths[$pathIndex++], strtolower($type) . '.php'))
{
// Import the class file.
include_once $tryThis;
}
}
if (!class_exists($tableClass))
{
// If we were unable to find the class file in the JTable include paths, raise a warning and return false.
JLog::add(JText::sprintf('JLIB_DATABASE_ERROR_NOT_SUPPORTED_FILE_NOT_FOUND', $type), JLog::WARNING, 'jerror');
return false;
}
}
// If a database object was passed in the configuration array use it, otherwise get the global one from JFactory.
$db = isset($config['dbo']) ? $config['dbo'] : JFactory::getDbo();
// Instantiate a new table class and return it.
return new $tableClass($db);
}