常用组件

SetLocale.php

<?php

namespace App\Http\Middleware;

use App;
use Closure;
use Illuminate\Http\Response;

class SetLocale
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $locale = $request->cookie('locale', 'zh-CN');

        if ($request->has('locale')) {
            $locale = $request->get('locale');
        }

        App::setLocale($locale);
        $cookie = cookie('locale', $locale);
        $docsUrlRegex = '~docs/(?<version>\w+)(?:/(?<locale>zh-CN|en)?/?)?~';

        if (preg_match($docsUrlRegex, $request->path(), $matches)) {
            $currentLocale = trim($matches['locale'] ?? 'zh-CN', '/');
            $version = $matches['version'] ?? 'master';

            if ($currentLocale !== $locale) {
                return redirect(preg_replace($docsUrlRegex, "docs/{$version}/{$locale}/", $request->fullUrl()));
            }
        }

        $response = $next($request);

        if ($response instanceof Response) {
            $response->cookie($cookie);
        }

        return $response;
    }
}