fix user can back to previous page after logout

app/Http/Middleware/NoHttpCache.php

@@ -0,0 +1,40 @@
+<?php
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Response;
+use Symfony\Component\HttpFoundation\Response as SymfonyResponse;
+
+class NoHttpCache
+{
+
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request $request
+     * @param  \Closure $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        $response = $next($request);
+
+        // This step is only needed if you are returning
+        // a view in your Controller or elsewhere, because
+        // when returning a view `$next($request)` returns
+        // a View object, not a Response object, so we need
+        // to wrap the View back in a Response.
+        if (!$response instanceof SymfonyResponse) {
+            $response = new Response($response);
+        }
+
+        /**
+         * @var  $headers  \Symfony\Component\HttpFoundation\HeaderBag
+         */
+        $response->header('Pragma', 'no-cache');
+        $response->header('Expires', 'Fri, 01 Jan 1990 00:00:00 GMT');
+        $response->header('Cache-Control', 'no-cache, must-revalidate, no-store, max-age=0, private');
+
+        return $response;
+    }
+}