[8.x] Adds Response authorization to Form Requests (laravel#38489)

* Adds Response authorization to Form Requests.

* Style changes

* Removes string check to denying responses.

* Fixes tests by removing string check.

* Removed string authorization to denying response.

src/Illuminate/Foundation/Http/FormRequest.php

@@ -3,6 +3,7 @@
 namespace Illuminate\Foundation\Http;
 
 use Illuminate\Auth\Access\AuthorizationException;
+use Illuminate\Auth\Access\Response;
 use Illuminate\Contracts\Container\Container;
 use Illuminate\Contracts\Validation\Factory as ValidationFactory;
 use Illuminate\Contracts\Validation\ValidatesWhenResolved;
@@ -163,11 +164,15 @@ protected function getRedirectUrl()
      * Determine if the request passes the authorization check.
      *
      * @return bool
+     *
+     * @throws \Illuminate\Auth\Access\AuthorizationException
      */
     protected function passesAuthorization()
     {
         if (method_exists($this, 'authorize')) {
-            return $this->container->call([$this, 'authorize']);
+            $result = $this->container->call([$this, 'authorize']);
+
+            return $result instanceof Response ? $result->authorize() : $result;
         }
 
         return true;

tests/Foundation/FoundationFormRequestTest.php

@@ -4,6 +4,7 @@
 
 use Exception;
 use Illuminate\Auth\Access\AuthorizationException;
+use Illuminate\Auth\Access\Response;
 use Illuminate\Container\Container;
 use Illuminate\Contracts\Translation\Translator;
 use Illuminate\Contracts\Validation\Factory as ValidationFactoryContract;
@@ -101,6 +102,19 @@ public function testValidateMethodThrowsWhenAuthorizationFails()
         $this->createRequest([], FoundationTestFormRequestForbiddenStub::class)->validateResolved();
     }
 
+    public function testValidateThrowsExceptionFromAuthorizationResponse()
+    {
+        $this->expectException(AuthorizationException::class);
+        $this->expectExceptionMessage('foo');
+
+        $this->createRequest([], FoundationTestFormRequestForbiddenWithResponseStub::class)->validateResolved();
+    }
+
+    public function testValidateDoesntThrowExceptionFromResponseAllowed()
+    {
+        $this->createRequest([], FoundationTestFormRequestPassesWithResponseStub::class)->validateResolved();
+    }
+
     public function testPrepareForValidationRunsBeforeValidation()
     {
         $this->createRequest([], FoundationTestFormRequestHooks::class)->validateResolved();
@@ -322,3 +336,24 @@ public function passedValidation()
         $this->replace(['name' => 'Adam']);
     }
 }
+
+class FoundationTestFormRequestForbiddenWithResponseStub extends FormRequest
+{
+    public function authorize()
+    {
+        return Response::deny('foo');
+    }
+}
+
+class FoundationTestFormRequestPassesWithResponseStub extends FormRequest
+{
+    public function rules()
+    {
+        return [];
+    }
+
+    public function authorize()
+    {
+        return Response::allow('baz');
+    }
+}