fix: controller attribute filters with parameters

system/Router/Attributes/Filter.php

@@ -62,6 +62,6 @@ public function getFilters(): array
             return [$this->by];
         }
 
-        return [$this->by => $this->having];
+        return [$this->by . ':' . implode(',', $this->having)];
     }
 }

tests/_support/Router/Controllers/AttributeController.php

@@ -41,6 +41,17 @@ public function filtered(): ResponseInterface
         return $this->response->setBody('Filtered: ' . $body);
     }
 
+    /**
+     * Test method with Filter attribute with parameters
+     */
+    #[Filter(by: 'testAttributeFilter', having: ['arg1', 'arg2'])]
+    public function filteredWithParams(): ResponseInterface
+    {
+        $body = $this->request->getBody();
+
+        return $this->response->setBody('Filtered: ' . $body);
+    }
+
     /**
      * Test method with Restrict attribute (environment)
      */

tests/_support/Router/Filters/TestAttributeFilter.php

@@ -21,17 +21,23 @@ class TestAttributeFilter implements FilterInterface
 {
     public function before(RequestInterface $request, $arguments = null)
     {
+        if ($arguments !== null) {
+            $arguments = '(' . implode(',', $arguments) . ')';
+        }
         // Modify request body to indicate filter ran
-        $request->setBody('before_filter_ran:');
+        $request->setBody('before_filter_ran' . $arguments . ':');
 
         return $request;
     }
 
     public function after(RequestInterface $request, ResponseInterface $response, $arguments = null)
     {
+        if ($arguments !== null) {
+            $arguments = '(' . implode(',', $arguments) . ')';
+        }
         // Append to response body to indicate filter ran
         $body = $response->getBody();
-        $response->setBody($body . ':after_filter_ran');
+        $response->setBody($body . ':after_filter_ran' . $arguments);
 
         return $response;
     }

tests/system/CodeIgniterTest.php

@@ -1062,6 +1062,34 @@ public function testRouteAttributeFilterIntegration(): void
         $this->assertStringContainsString(':after_filter_ran', (string) $output);
     }
 
+    public function testRouteAttributeFilterWithParamsIntegration(): void
+    {
+        $_SERVER['argv'] = ['index.php', 'attribute/filteredWithParams'];
+        $_SERVER['argc'] = 2;
+
+        Services::superglobals()->setServer('REQUEST_URI', '/attribute/filteredWithParams');
+        Services::superglobals()->setServer('SCRIPT_NAME', '/index.php');
+
+        // Register the test filter
+        $filterConfig                                 = config('Filters');
+        $filterConfig->aliases['testAttributeFilter'] = TestAttributeFilter::class;
+        service('filters', $filterConfig);
+
+        // Inject mock router
+        $routes = service('routes');
+        $routes->get('attribute/filteredWithParams', '\Tests\Support\Router\Controllers\AttributeController::filteredWithParams');
+        $router = service('router', $routes, service('incomingrequest'));
+        Services::injectMock('router', $router);
+
+        ob_start();
+        $this->codeigniter->run();
+        $output = ob_get_clean();
+
+        // Verify filter ran before (modified request body) and after (appended to response)
+        $this->assertStringContainsString('Filtered: before_filter_ran(arg1,arg2):', (string) $output);
+        $this->assertStringContainsString(':after_filter_ran(arg1,arg2)', (string) $output);
+    }
+
     public function testRouteAttributeRestrictIntegration(): void
     {
         $_SERVER['argv'] = ['index.php', 'attribute/restricted'];

tests/system/Router/Attributes/FilterTest.php

@@ -90,8 +90,7 @@ public function testGetFiltersReturnsArrayWithFilterNameAndArguments(): void
         $filters = $filter->getFilters();
 
         $this->assertCount(1, $filters);
-        $this->assertArrayHasKey('auth', $filters);
-        $this->assertSame(['admin'], $filters['auth']);
+        $this->assertSame('auth:admin', $filters[0]);
     }
 
     public function testGetFiltersReturnsArrayWithMultipleArguments(): void
@@ -101,8 +100,7 @@ public function testGetFiltersReturnsArrayWithMultipleArguments(): void
         $filters = $filter->getFilters();
 
         $this->assertCount(1, $filters);
-        $this->assertArrayHasKey('permission', $filters);
-        $this->assertSame(['posts.edit', 'posts.delete'], $filters['permission']);
+        $this->assertSame('permission:posts.edit,posts.delete', $filters[0]);
     }
 
     public function testGetFiltersWithEmptyHavingReturnsSimpleArray(): void
@@ -135,13 +133,13 @@ public function testGetFiltersFormatIsConsistentAcrossInstances(): void
         $filters1 = $filterWithoutArgs->getFilters();
         $filters2 = $filterWithArgs->getFilters();
 
-        // Without args: simple array
-        $this->assertArrayNotHasKey('filter1', $filters1);
-        $this->assertContains('filter1', $filters1);
+        // Without args:
+        $this->assertCount(1, $filters1);
+        $this->assertSame('filter1', $filters1[0]);
 
-        // With args: associative array
-        $this->assertArrayHasKey('filter2', $filters2);
-        $this->assertIsArray($filters2['filter2']);
+        // With args:
+        $this->assertCount(1, $filters2);
+        $this->assertSame('filter2:arg1', $filters2[0]);
     }
 
     public function testFilterWithNumericArguments(): void
@@ -150,8 +148,8 @@ public function testFilterWithNumericArguments(): void
 
         $filters = $filter->getFilters();
 
-        $this->assertArrayHasKey('rate_limit', $filters);
-        $this->assertSame([100, 60], $filters['rate_limit']);
+        $this->assertCount(1, $filters);
+        $this->assertSame('rate_limit:100,60', $filters[0]);
     }
 
     public function testFilterWithMixedTypeArguments(): void
@@ -160,8 +158,8 @@ public function testFilterWithMixedTypeArguments(): void
 
         $filters = $filter->getFilters();
 
-        $this->assertArrayHasKey('custom', $filters);
-        $this->assertSame(['string', 123, true], $filters['custom']);
+        $this->assertCount(1, $filters);
+        $this->assertSame('custom:string,123,1', $filters[0]);
     }
 
     public function testFilterWithAssociativeArrayArguments(): void
@@ -170,8 +168,8 @@ public function testFilterWithAssociativeArrayArguments(): void
 
         $filters = $filter->getFilters();
 
-        $this->assertArrayHasKey('configured', $filters);
-        $this->assertSame(['option1' => 'value1', 'option2' => 'value2'], $filters['configured']);
+        $this->assertCount(1, $filters);
+        $this->assertSame('configured:value1,value2', $filters[0]);
     }
 
     public function testBeforeDoesNotModifyRequest(): void

user_guide_src/source/incoming/controller_attributes.rst

@@ -44,11 +44,15 @@ The ``Filters`` attribute allows you to specify one or more filters to be applie
 
     When filters are applied both by an attribute and in the filter configuration file, they will both be applied, but that could lead to unexpected results.
 
+.. note::
+
+    Please remember that every parameter applied to the filter will be converted to a string. This behavior affects only filters.
+
 Restrict
 --------
 
 The ``Restrict`` attribute allows you to restrict access to the class or method based on the domain, the sub-domain, or
-the environment the application is running in. Here's an exmaple of how to use the ``Restrict`` attribute:
+the environment the application is running in. Here's an example of how to use the ``Restrict`` attribute:
 
 .. literalinclude:: controller_attributes/004.php