Codeigniter switch language with url - codeigniter

Question

I have built it all: I mean switching languages with hooks works, but now I want to get language from the url and switch it then, like:
http://localhost/about-me
or
http://localhost/o-meni
So if I send first link to someone it should automatically detect language and display that page and all navigation links in that language.
In the routes I have already forwarded to my main controller's function param which language I want to use. Now I need to set that language. But if I do $this->session->set_userdata('site_lang', "српски") language in behind doesn't change for everything.
I have noticed that, that in existing language switcher, redirection is used after setting language session to selected language, redirect to referral link, but now how to manage direct user input?
I hope I made myself clear and hope someone will get into this.
Thank you.

Answer 1

I found a solution like this:
Update 1:
I did it like this, first in language switcher:
class LanguageSwitcher extends CI_Controller {
public function __construct() {
parent::__construct();
}
function switchLang($language = "") {
$lang_en['about-me'] = 'o-meni';
$lang_sr['o-meni'] = 'about-me';
$lang_en['services'] = 'usluge';
$lang_sr['usluge'] = 'services';
$lang_en['products'] = 'proizvodi';
$lang_sr['proizvodi'] = 'products';
$lang_en['downloads'] = 'preuzimanja';
$lang_sr['preuzimanja'] = 'downloads';
$lang_en['contact'] = 'kontakt';
$lang_sr['kontakt'] = 'contact';
if ($language === "") {
$language = 'српски';
}
$this->session->set_userdata('site_lang', $language);
$referrer = strtolower($this->agent->referrer());
//log_message('error', "switchLang:" . $referrer . ", lang:" . $language);
if ($referrer !== "") {
$l = str_replace(base_url(), "", substr($referrer, strrpos($referrer, base_url())));
if (urldecode($language) === 'српски' && array_key_exists($l, $lang_en)) {
$referrer = str_replace($l, $lang_en[$l], $referrer);
} else
if (urldecode($language) === 'english' && array_key_exists($l, $lang_sr)) {
$referrer = str_replace($l, $lang_sr[$l], $referrer);
}
redirect($referrer);
}
}
}
and secondly in my controller, create a function to call:
private function redirectLanguage($param) {
$site_lang = urldecode($this->session->userdata('site_lang'));
//echo $param . "+" . $site_lang;
if ($param === "sr" && ($site_lang === "english" || $site_lang === "")) {
$this->session->set_userdata('site_lang', "српски");
$this->lang->load("message", "српски");
} else if ($param === "en" && ($site_lang === "српски" || $site_lang === "")) {
$this->session->set_userdata('site_lang', "english");
$this->lang->load("message", "english");
}
}
like this:
public function about($param = "") {
$this->redirectLanguage($param);
$this->load->view('header');
$this->load->view('main_starts');
$this->load->view('about-me');
$this->load->view('main_ends');
$this->load->view('footer');
}
this way I can catch it if directly pasted to the browser address bar and load the messages and set session site_lang.
Now it works, all except some issues in IE and EDGE;
Update 2:
I had to add this to make sure it will work in other browsers too:
$browser = $this->agent->browser();
if ($browser === "Chrome" || $browser === "Firefox") {
header("Cache-Control: max-age=3600, public");
} else {
header("Expires: Sun, 19 Nov 1978 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
}
because sessions won't work well in internet explorer if caching is turned on so better turn it off.