/**
* This function returns an instance of the specified model.
*
* @access public
* @static
* @param string $model the model's name
* @param array $primary_key the column values of the primary key
* that will be used to load the model
* @return mixed an instance of the specified model
*/
public static function model($model, $primary_key = array())
{
$model = DB_ORM_Model::factory($model);
if (!empty($primary_key)) {
if (!is_array($primary_key)) {
$primary_key = array($primary_key);
}
$model_key = $model::primary_key();
$count = count($model_key);
for ($i = 0; $i < $count; $i++) {
$column = $model_key[$i];
$model->{$column} = $primary_key[$i];
}
$model->load();
}
return $model;
}
