Add Backed Enum Support to Inertia::render()

src/ResponseFactory.php

@@ -2,6 +2,7 @@
 
 namespace Inertia;
 
+use BackedEnum;
 use Closure;
 use Illuminate\Contracts\Support\Arrayable;
 use Illuminate\Support\Arr;
@@ -240,10 +241,19 @@ protected function findComponentOrFail(string $component): void
     /**
      * Create an Inertia response.
      *
+     * @param  BackedEnum|string $component
      * @param  array<array-key, mixed>|\Illuminate\Contracts\Support\Arrayable<array-key, mixed>|ProvidesInertiaProperties  $props
      */
-    public function render(string $component, $props = []): Response
+    public function render($component, $props = []): Response
     {
+        if($component instanceof BackedEnum) {
+            $component = $component->value;
+
+            if(!is_string($component)) {
+                throw new InvalidArgumentException('Component argument must be of type string or a string BackedEnum');
+            }
+        }
+
         if (config('inertia.ensure_pages_exist', false)) {
             $this->findComponentOrFail($component);
         }

tests/Enums/IntBackedEnum.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Inertia\Tests\Enums;
+
+enum IntBackedEnum: int
+{
+    case Zero = 0;
+}

tests/Enums/StringBackedEnum.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Inertia\Tests\Enums;
+
+enum StringBackedEnum: string
+{
+    case UsersIndex = "UsersPage/Index";
+}

tests/ResponseFactoryTest.php

@@ -19,8 +19,11 @@
 use Inertia\MergeProp;
 use Inertia\OptionalProp;
 use Inertia\ResponseFactory;
+use Inertia\Tests\Enums\IntBackedEnum;
+use Inertia\Tests\Enums\StringBackedEnum;
 use Inertia\Tests\Stubs\ExampleInertiaPropsProvider;
 use Inertia\Tests\Stubs\ExampleMiddleware;
+use InvalidArgumentException;
 
 class ResponseFactoryTest extends TestCase
 {
@@ -489,4 +492,17 @@ public function test_will_not_throw_exception_if_component_does_not_exist_when_e
         $response = (new ResponseFactory)->render('foo');
         $this->assertInstanceOf(\Inertia\Response::class, $response);
     }
+
+    public function test_render_accepts_backed_enum(): void
+    {
+        $response = (new ResponseFactory)->render(StringBackedEnum::UsersIndex);
+        $this->assertInstanceOf(\Inertia\Response::class, $response);
+    }
+
+    public function test_render_throws_for_non_string_backed_enum(): void
+    {
+        $factory = new ResponseFactory;
+        $this->expectException(InvalidArgumentException::class);
+        $factory->render(IntBackedEnum::Zero);
+    }
 }