What's the best logic for switching language in Laravel?

I've solved my problem by adding this to the before filter in routes.php:

// Default language ($lang) & current uri language ($lang_uri)$lang = 'he';$lang_uri = URI::segment(1);// Set default session language if none is setif(!Session::has('language')){    Session::put('language', $lang);}// Route language path if neededif($lang_uri !== 'en' && $lang_uri !== 'he'){    return Redirect::to($lang.'/'.($lang_uri ? URI::current() : ''));}// Set session language to urielseif($lang_uri !== Session::get('language')){    Session::put('language', $lang_uri);}// Store the language switch links to the session$he2en = preg_replace('/he\//', 'en/', URI::full(), 1);$en2he = preg_replace('/en\//', 'he/', URI::full(), 1);Session::put('he2en', $he2en);Session::put('en2he', $en2he);

This is a post i posted originally on the laravel forums, but maybe it will help somebody else, so i post it here also.

I had some trouble with building a easy language switcher for my app, and the info on the forums where a little bit old (some posts), so i made this simple piece of code that makes it supereasy to change language on your app on the fly.

I have the language strings in my views as following:

{{ __('languagefile.the_language_string'); }}

And I get the languages with a URL, i think this is the best way, also its good for seo and for links that people share. Example:

www.myapp.com/fi/support (Finnish)www.myapp.com/en/support (English)www.myapp.com/sv/support (Swedish)

Ok, so the problem was that i wanted a easy way to change the language on the fly, without having to mess with sessions and cookies. Heres how i made it:

Make a library in your libraries folder called chooselang.php

Insert this code inside:

class Chooselang extends HTML {    /**     * Generate a Language changer link.     *     * <code>     *      // Generate a link to the current location,     *      // but still change the site langauge on the fly     *      // Change $langcode to desired language, also change the Config::set('application.language', 'YOUR-LANG-HERE')); to desired language     *      // Example     *      echo Chooselang::langslug(URI::current() , $langcode = 'Finnish' . Config::set('application.language', 'fi'));     * </code>     *     * @param  string  $url     * @param  string  $langcode     * @param  array   $attributes     * @param  bool    $https     * @return string     */    public static function langslug($url, $langcode = null, $attributes = array(), $https = null)    {        $url = URL::to($url, $https);        if (is_null($langcode)) $langcode = $url;        return '<a href="'.$url.'"'.static::attributes($attributes).'>'.static::entities($langcode).'</a>';    }}

After this you are ready for getting your url switcher URL:s generated. Simply add them as you whould any other Blade links.

Example how to generate links for Finnish, Swedish and English (with Blade)

  {{ Chooselang::langslug(URI::current() , $langcode = 'Fin' . Config::set('application.language', 'fi')); }}  {{ Chooselang::langslug(URI::current() , $langcode = 'Swe' . Config::set('application.language', 'sv')); }}  {{ Chooselang::langslug(URI::current() , $langcode = 'Eng' . Config::set('application.language', 'en')); }}

The above will generate URL:s that are always on the current page, and change the lang slug to the one you want. This way the language changes to the one you want, and the user naturally stays on the same page. The default language slug is never added to the url.

Generated urls look something like:

<a href="http://localhost/laravel/public/support">Fin</a><a href="http://localhost/laravel/public/sv/support">Swe</a><a href="http://localhost/laravel/public/en/support">Eng</a>

PS. The links are specially useful if you add them to your master template file.

You could have a Route to hand language change, for example:

Route::get('translate/(:any)', 'translator@set');

Then in the set action in the translator controller could alter the session, depending on the language code passed via the URL.

You could also alter the configuration setting by using

Config::set('application.language', $url_variable');

Controller Example - translate.php

public function action_set($url_variable){     /* Your code Here */}