Updated the SPA profiler as Laravel 5 middleware.

app/Http/Controllers/Api/Web/ProfilerController.php

@@ -4,9 +4,9 @@ namespace App\Http\Controllers\Api\Web;
 
 use App\Http\Controllers\Controller;
 use App\ProfileRequest;
-use Illuminate\Support\Facades\Cache;
-use Illuminate\Support\Facades\Config;
-use Illuminate\Support\Facades\Response;
+use Cache;
+use Config;
+use Response;
 
 class ProfilerController extends Controller
 {

app/Http/Kernel.php

@@ -18,6 +18,7 @@ class Kernel extends HttpKernel
         \Illuminate\Session\Middleware\StartSession::class,
         \Illuminate\View\Middleware\ShareErrorsFromSession::class,
         \App\Http\Middleware\VerifyCsrfToken::class,
+        \App\Http\Middleware\Profiler::class,
     ];
 
     /**

app/Http/Middleware/Profiler.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App;
+use Closure;
+use Cache;
+use Config;
+use DB;
+use Log;
+use App\ProfileRequest;
+use Symfony\Component\HttpFoundation\Response;
+
+class Profiler
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        // Profiling magic time!
+        if (Config::get('app.debug')) {
+            DB::enableQueryLog();
+            $profiler = ProfileRequest::create();
+
+            try {
+                $response = $next($request);
+
+            } catch (\Exception $e) {
+                $response = \Response::make(['exception' => $e->getTrace()], 500);
+                $profiler->log('error', $e->__toString(), []);
+            }
+
+            $response = $this->processResponse($profiler, $response);
+
+            Log::listen(function ($level, $message, $context) use ($profiler, $request) {
+                $profiler->log($level, $message, $context);
+            });
+
+        } else {
+            // Process the request the usual, boring way.
+            $response = $next($request);
+        }
+
+        return $response;
+    }
+
+
+    protected function processResponse(ProfileRequest $profiler, Response $response) {
+        $profiler->recordQueries();
+
+        Cache::put('profiler-request-' . $profiler->getId(), $profiler->toString(), 2);
+        return $response->header('X-Request-Id', $profiler->getId());
+    }
+}

app/ProfileRequest.php

@@ -2,7 +2,7 @@
 
 namespace App;
 
-use Illuminate\Support\Facades\DB;
+use DB;
 
 class ProfileRequest
 {
@@ -17,6 +17,9 @@ class ProfileRequest
         return $req;
     }
 
+    /**
+     * @return ProfileRequest
+     */
     public static function create()
     {
         $req = new ProfileRequest();
@@ -45,9 +48,10 @@ class ProfileRequest
         return $this->_id;
     }
 
-    public function after($request, $response)
+    public function recordQueries()
     {
         $this->_data['queries'] = [];
+
         foreach (DB::getQueryLog() as $query) {
             if (starts_with($query['query'], 'select * from `cache` where')) {
                 continue;