Add initial Gate collector

config/debugbar.php

@@ -100,6 +100,7 @@
         'files'           => false, // Show the included files
         'config'          => false, // Display config settings
         'auth'            => false, // Display Laravel authentication status
+        'gate'            => false, // Display Laravel Gate checks
         'session'         => true,  // Display session data
     ),
 

src/DataCollector/GateCollector.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Barryvdh\Debugbar\DataCollector;
+
+use DebugBar\DataCollector\MessagesCollector;
+use Illuminate\Contracts\Auth\Access\Gate;
+use Illuminate\Contracts\Auth\Authenticatable;
+
+/**
+ * Collector for Laravel's Auth provider
+ */
+class GateCollector extends MessagesCollector
+{
+    /**
+     * @param Gate $gate
+     */
+    public function __construct(Gate $gate)
+    {
+        parent::__construct('gate');
+
+        if (method_exists($gate, 'after')) {
+            $gate->after([$this, 'addCheck']);
+        }
+    }
+
+    public function addCheck(Authenticatable $user, $ability, $result = null, $arguments = [])
+    {
+        $label = $result ? 'success' : 'error';
+
+        $this->addMessage([
+            'ability' => $ability,
+            'result' => $result,
+            'arguments' => $arguments,
+            'user' => $user ? $user->getAuthIdentifier() : null,
+        ], $label, false);
+    }
+}

src/LaravelDebugbar.php

@@ -374,6 +374,15 @@ function ($query, $bindings, $time, $connectionName) use ($db, $queryCollector)
             }
         }
 
+        if ($this->shouldCollect('gate', false)) {
+            try {
+                $gateCollector = $this->app->make(GateCollector::class);
+                $this->addCollector($gateCollector);
+            } catch (\Exception $e){
+                // No Gate collector
+            }
+        }
+
         $renderer = $this->getJavascriptRenderer();
         $renderer->setIncludeVendors($this->app['config']->get('debugbar.include_vendors', true));
         $renderer->setBindAjaxHandlerToXHR($app['config']->get('debugbar.capture_ajax', true));