validation errors multi-lingual

[eluser]xwero[/eluser]
The hardest part about changing languages at runtime is loading the choosen language files. I've made a method for this a while ago

Code:

/**
    * Makes switching between languages easier
    *
    *  example : http://ellislab.com/forums/viewreply/339962/
    */
    function switch_to($idiom)
    {
        $CI =& get_instance();
        if(is_string($idiom) && $idiom != $CI->config->item('language'))
        {
            $CI->config->set_item('language',$idiom);
            $loaded = $this->is_loaded;
            $this->is_loaded = array();
                
            foreach($loaded as $file)
            {
                $this->load(str_replace('_lang.php','',$file));    
            }
        }
    }

How you do the switch that is up to you, there are some solutions floating around the on the forum and wiki.