Add the method methodsWithoutModels in AuthorizesRequests Trait.

src/Illuminate/Foundation/Auth/Access/AuthorizesRequests.php

@@ -86,7 +86,7 @@ public function authorizeResource($model, $parameter = null, array $options = []
         $middleware = [];
 
         foreach ($this->resourceAbilityMap() as $method => $ability) {
-            $modelName = in_array($method, ['index', 'create', 'store']) ? $model : $parameter;
+            $modelName = in_array($method, $this->methodsWithoutModels()) ? $model : $parameter;
 
             $middleware["can:{$ability},{$modelName}"][] = $method;
         }
@@ -112,4 +112,14 @@ protected function resourceAbilityMap()
             'destroy' => 'delete',
         ];
     }
+
+    /**
+     * Get the list of resource methods which not wait for a parameter.
+     *
+     * @return array
+     */
+    protected function methodsWithoutModels()
+    {
+        return ['index', 'create', 'store'];
+    }
 }