fixed #57

app/Http/Kernel.php

@@ -66,5 +66,6 @@ class Kernel extends HttpKernel
         'permission' => \Laratrust\Middleware\LaratrustPermission::class,
         'ability' => \Laratrust\Middleware\LaratrustAbility::class,
         'api.company' => \App\Http\Middleware\ApiCompany::class,
+        'install' => \App\Http\Middleware\CanInstall::class,
     ];
 }

app/Http/Middleware/CanInstall.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+
+class CanInstall
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        // Check if app is installed
+        if (env('APP_INSTALLED', true) == false) {
+            return $next($request);
+        }
+
+        // Already installed, redirect to login
+        redirect('auth/login')->send();
+    }
+}

routes/web.php

@@ -143,7 +143,7 @@ Route::group(['middleware' => ['guest', 'language']], function () {
         Route::post('reset', 'Auth\Reset@store');
     });
 
-    Route::group(['prefix' => 'install'], function () {
+    Route::group(['middleware' => 'install', 'prefix' => 'install'], function () {
         Route::get('/', 'Install\Requirements@show');
         Route::get('requirements', 'Install\Requirements@show');