Multi Language Switch In Laravel

Intergrate multi-language support in Laravel is prettry easy. This implementation is based on a video: Switch languages in Laravel with Localization in 5.8 made easy !
Thanks Bert De Swaef!

We can simply implement multi-language support in Laravel by the following steps.

Route set up

Open your route file routes\web.php and add the following code:

Route::get('/lang/{locale}', function ($locale) {
    session()->put('locale', $locale);
    return redirect()->back();
});

Add middleware

php artisan make:middleware Localization

Open the file app/Http/Middleware/Localization.php and edit as the following code:

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use App;

class Localization
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        //check if session has locale
        if (session()->has('locale')) {
            //set locale
            App::setLocale(session('locale'));
        } 
        return $next($request);
    }
}

Then add the Localization middleware to the middlewareGroups section of app/Http/Kernel.php file as the following code:

protected $middlewareGroups = [
    'web' => [
        ...
        \App\Http\Middleware\Localization::class,
    ],

Add language files

Here I use Chinese language to demonstrate how to add language support.

1. Download the zip file and decompress to the resources/lang directory,
2. In the same directory resources/lang create a cn.json file and add the following code:

   {
       "Language": "选择语言",
       "Email": "电子邮件",
       "Password": "密码",
       "Log in": "登录",
       "Log Out": "登出",
       "Sign Up": "注册",
       "Reset Password": "重置密码",
       "Confirm Password": "确认密码",
       "New Password": "新密码",
       "Confirm New Password": "确认新密码",
       "Send Password Reset Link": "发送密码重置链接",
       "Remember me": "记住我",
       "Forgot your password?": "忘记密码？",
       "Forgot your password? No problem. Just let us know your email address and we will email you a\n            password reset link that will allow you to choose a new one.": "忘记密码？不用担心。请告诉我们你的电子邮件地址，我们将发送一个密码重置链接，这将允许你设置一个新的密码。",
       "Email Password Reset Link": "发送重置密码电子邮件",
       "Dashboard": "首页",
       "You're logged in!": "你已登录！",
       "A fresh verification link has been sent to your email address.": "新的验证链接已发送到您的 E-mail。",
       "All rights reserved.": "版本所有。",
       "Before proceeding, please check your email for a verification link.": "在继续之前请先验证您的 E-mail。",
       "click here to request another": "点击重新发送 E-mail",
       "E-Mail Address": "E-mail",
       "Error": "错误",
       "Forbidden": "访问被拒绝",
       "Forgot Your Password?": "忘记密码？",
       "Go Home": "回首页",
       "Hello!": "您好：",
       "hi": "嗨",
       "If you did not create an account, no further action is required.": "如果您未注册帐号，请忽略此邮件。",
       "If you did not receive the email": "如果您没有收到",
       "If you did not request a password reset, no further action is required.": "如果您未申请重设密码，请忽略此邮件。",
       "If you’re having trouble clicking the \":actionText\" button, copy and paste the URL below\ninto your web browser: [:actionURL](:actionURL)": "如果您点击「:actionText」按钮时出现问题，请复制下方链接到浏览器中开启： [:actionURL](:actionURL)",
       "Login": "登录",
       "Logout": "注销",
       "Name": "姓名",
       "Oh no": "不好了",
       "Page Expired": "页面会话已超时",
       "Page Not Found": "页面不存在",
       "Please click the button below to verify your email address.": "请点击下面按钮验证您的 E-mail：",
       "Regards": "致敬",
       "Register": "注册",
       "Remember Me": "记住我",
       "Reset Password Notification": "重设密码通知",
       "Service Unavailable": "暂时不提供服务",
       "Sorry, you are forbidden from accessing this page.": "很抱歉，你没有权限访问此页面。",
       "Sorry, the page you are looking for could not be found.": "很抱歉！您浏览的页面不存在。",
       "Sorry, you are making too many requests to our servers.": "很抱歉！您向我们的服务器发出太多请求了。",
       "Sorry, you are not authorized to access this page.": "很抱歉！您没有权限浏览此页面。",
       "Sorry, your session has expired. Please refresh and try again.": "很抱歉！您的 Session 已过期，请刷新后再试一次。",
       "Sorry, we are doing some maintenance. Please check back soon.": "很抱歉！我们正在维护网站，请稍候再回来。",
       "Toggle navigation": "切换导航",
       "Too Many Requests": "太多请求",
       "Unauthorized": "未授权",
       "Verify Email Address": "验证 E-mail",
       "Verify Your Email Address": "验证 E-mail",
       "You are receiving this email because we received a password reset request for your account.": "您收到此电子邮件是因为我们收到了您帐户的密码重设请求。",
       "Whoops!": "哎呀！",
       "Whoops, something went wrong on our servers.": "哎呀，我们的服务器出了问题。",
       "This password reset link will expire in :count minutes.": "此密码重置链接将会在:count分钟内失效。"
   }

Place the trigger to your page

Now you can just switch the language package from eachother by adding the following code to your page:

<a href="/lang/en">English</a>
<a href="/lang/cn">中文</a>

That’s it, you can read Laravel Localization for more details