fix union or nullable types issues when in params (#407)

src/Support/OperationExtensions/RulesExtractor/ValidateCallExtractor.php

@@ -84,6 +84,7 @@ public function extract()
             $validationRulesCode = $printer->prettyPrint([$validationRules]);
 
             $injectableParams = collect($methodNode->getParams())
+                ->filter(fn (Node\Param $param) => isset($param->type->name))
                 ->filter(fn (Node\Param $param) => ! class_exists($className = (string) $param->type) || ! is_a($className, Request::class, true))
                 ->filter(fn (Node\Param $param) => isset($param->var->name) && is_string($param->var->name))
                 ->mapWithKeys(function (Node\Param $param) {
@@ -122,7 +123,7 @@ private function getPossibleParamType(Node\Stmt\ClassMethod $methodNode, Node\Ex
     {
         $paramsMap = collect($methodNode->getParams())
             ->mapWithKeys(function (Node\Param $param) {
-                if (! $param->type) {
+                if (! isset($param->type->name)) {
                     return [];
                 }
 

tests/Support/OperationExtensions/RequestEssentialsExtensionTest.php

@@ -2,6 +2,7 @@
 
 use Dedoc\Scramble\Tests\Files\SampleUserModel;
 use Dedoc\Scramble\Tests\Files\Status;
+use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Route as RouteFacade;
 
 it('uses getRouteKeyName to determine model route key type', function () {
@@ -95,8 +96,27 @@ public function foo(SampleUserModel $user)
 });
 class UnionKey_RequestEssentialsExtensionTest_Controller
 {
-    public function foo(string|int $user)
+    public function foo(Request $request, string|int $user)
     {
+        $request->validate(['foo' => 'required']);
+    }
+}
+
+it('determines route key type for nullable', function () {
+    $openApiDocument = generateForRoute(function () {
+        return RouteFacade::get('api/test/{user}', [NullableKey_RequestEssentialsExtensionTest_Controller::class, 'foo']);
+    });
+
+    expect($openApiDocument['paths']['/test/{user}']['get']['parameters'][0]['schema'])
+        ->toBe([
+            'type' => ['integer', 'null'],
+        ]);
+});
+class NullableKey_RequestEssentialsExtensionTest_Controller
+{
+    public function foo(Request $request, ?int $user)
+    {
+        $request->validate(['foo' => 'required']);
     }
 }