[8.x] Avoid constructor call when fetching resource JSON options (#40261)

* Avoid constructor call when fetching json options

* Update CollectsResources.php

* Update CollectsResources.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: philcross

src/Illuminate/Http/Resources/CollectsResources.php

@@ -6,6 +6,7 @@
 use Illuminate\Pagination\AbstractPaginator;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Str;
+use ReflectionClass;
 
 trait CollectsResources
 {
@@ -63,7 +64,13 @@ public function jsonOptions()
     {
         $collects = $this->collects();
 
-        return $collects ? (new $collects([]))->jsonOptions() : 0;
+        if (! $collects) {
+            return 0;
+        }
+
+        return (new ReflectionClass($collects))
+                  ->newInstanceWithoutConstructor()
+                  ->jsonOptions();
     }
 
     /**

tests/Integration/Http/Fixtures/PostResourceWithJsonOptionsAndTypeHints.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Illuminate\Tests\Integration\Http\Fixtures;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class PostResourceWithJsonOptionsAndTypeHints extends JsonResource
+{
+    public function __construct(Post $resource)
+    {
+        parent::__construct($resource);
+    }
+
+    public function toArray($request)
+    {
+        return [
+            'id' => $this->id,
+            'title' => $this->title,
+            'reading_time' => $this->reading_time,
+        ];
+    }
+
+    public function jsonOptions()
+    {
+        return JSON_PRESERVE_ZERO_FRACTION;
+    }
+}

tests/Integration/Http/ResourceTest.php

@@ -25,6 +25,7 @@
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithAnonymousResourceCollectionWithPaginationInformation;
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithExtraData;
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithJsonOptions;
+use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithJsonOptionsAndTypeHints;
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithOptionalAppendedAttributes;
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithOptionalData;
 use Illuminate\Tests\Integration\Http\Fixtures\PostResourceWithOptionalMerging;
@@ -555,6 +556,26 @@ public function testResourcesMayCustomizeJsonOptionsOnPaginatedResponse()
         );
     }
 
+    public function testResourcesMayCustomizeJsonOptionsWithTypeHintedConstructor()
+    {
+        Route::get('/', function () {
+            return new PostResourceWithJsonOptionsAndTypeHints(new Post([
+                'id' => 5,
+                'title' => 'Test Title',
+                'reading_time' => 3.0,
+            ]));
+        });
+
+        $response = $this->withoutExceptionHandling()->get(
+            '/', ['Accept' => 'application/json']
+        );
+
+        $this->assertEquals(
+            '{"data":{"id":5,"title":"Test Title","reading_time":3.0}}',
+            $response->baseResponse->content()
+        );
+    }
+
     public function testCustomHeadersMayBeSetOnResponses()
     {
         Route::get('/', function () {