Merge pull request #3134 from Laravel-Backpack/fix-middleware-inclusion

[4.X] Fix middleware inclusion if you want to override web with your own array.

Author: tabacitu

src/routes/backpack/custom.php

@@ -8,10 +8,10 @@
 
 Route::group([
     'prefix'     => config('backpack.base.route_prefix', 'admin'),
-    'middleware' => [
-        config('backpack.base.web_middleware', 'web'),
-        config('backpack.base.middleware_key', 'admin'),
-    ],
+    'middleware' => array_merge(
+        (array) config('backpack.base.web_middleware', 'web'),
+        (array) config('backpack.base.middleware_key', 'admin')
+    ),
     'namespace'  => 'App\Http\Controllers\Admin',
 ], function () { // custom admin routes
 }); // this should be the absolute last line of this file