Works for main dashboard too

src/DashboardNova.php

@@ -55,6 +55,15 @@ public static function dashboardsIn($directory)
         );
     }
 
+    public static function cardsInDashboards($directory)
+    {
+        $dashboards = static::$dashboards;
+
+        foreach ($dashboards as $dashboard) {
+            DashboardNova::cards($dashboard->cards());
+        }
+    }
+
     /**
      * Register the given dashboards.
      *

src/Http/Requests/DashboardCardRequest.php

@@ -4,6 +4,7 @@
 
 use AlexBowers\MultipleDashboard\DashboardNova;
 use Laravel\Nova\Http\Requests\NovaRequest;
+use App\Providers\NovaServiceProvider;
 
 class DashboardCardRequest extends NovaRequest
 {
@@ -15,7 +16,16 @@ class DashboardCardRequest extends NovaRequest
     public function availableCards($dashboard)
     {
         if ($dashboard == 'main') {
-            return DashboardNova::availableDashboardCards($this);
+            /**
+             * This is a huge hack, and will not work for anybody not using
+             * the `App` default namespace.
+             */
+            return (new class(app()) extends NovaServiceProvider {
+                public function getAroundProtectedMethod()
+                {
+                    return $this->cards();
+                }
+            })->getAroundProtectedMethod();
         }
 
         return DashboardNova::availableDashboardCardsForDashboard($dashboard, $this);

src/Http/Requests/DashboardMetricRequest.php

@@ -5,6 +5,7 @@
 use Laravel\Nova\Nova;
 use Laravel\Nova\Metrics\Metric;
 use Laravel\Nova\Http\Requests\DashboardMetricRequest as CoreDashboardMetricRequest;
+use AlexBowers\MultipleDashboard\DashboardNova;
 
 class DashboardMetricRequest extends CoreDashboardMetricRequest
 {
@@ -27,6 +28,6 @@ public function metric()
      */
     public function availableMetrics()
     {
-        return Nova::availableDashboardCards($this)->whereInstanceOf(Metric::class);
+        return DashboardNova::allAvailableDashboardCards($this)->whereInstanceOf(Metric::class);
     }
 }

src/Tool.php

@@ -7,24 +7,5 @@
 
 class Tool extends BaseTool
 {
-    /**
-     * Perform any tasks that need to happen when the tool is booted.
-     *
-     * @return void
-     */
-    public function boot()
-    {
-        Nova::script('nova-multiple-dashboard', __DIR__.'/../dist/js/tool.js');
-        Nova::style('nova-multiple-dashboard', __DIR__.'/../dist/css/tool.css');
-    }
-
-    /**
-     * Build the view that renders the navigation links for the tool.
-     *
-     * @return \Illuminate\View\View
-     */
-    public function renderNavigation()
-    {
-        return view('nova-multiple-dashboard::navigation');
-    }
+    //
 }

src/ToolServiceProvider.php

@@ -32,6 +32,7 @@ public function boot()
 
         Nova::serving(function (ServingNova $event) {
             DashboardNova::dashboardsIn(app_path('Nova'));
+            DashboardNova::cardsInDashboards(app_path('Nova'));
             Nova::script('nova-multiple-dashboard', __DIR__ . '/../dist/js/tool.js');
         });
     }
@@ -50,6 +51,10 @@ protected function routes()
         Route::middleware(['nova', Authorize::class])
                 ->prefix('nova-vendor/AlexBowers/nova-multiple-dashboard')
                 ->group(__DIR__.'/../routes/api.php');
+
+        Route::get('/nova', function () {
+            return redirect('/nova/dashboards/main');
+        });
     }
 
     /**