diff --git a/src/Filters/GroupFilter.php b/src/Filters/GroupFilter.php
index 9654a4f..b9fa5dd 100644
--- a/src/Filters/GroupFilter.php
+++ b/src/Filters/GroupFilter.php
@@ -8,52 +8,74 @@
 use CI4\Auth\Exceptions\PermissionException;
 
 class GroupFilter implements FilterInterface {
+
   /**
    * --------------------------------------------------------------------------
    * Before.
    * --------------------------------------------------------------------------
    *
-   * Do whatever processing this filter needs to do. By default it should not
-   * return anything during normal execution. However, when an abnormal state
-   * is found, it should return an instance of CodeIgniter\HTTP\Response. If
-   * it does, script execution will end and that Response will be sent back
-   * to the client, allowing for error pages, redirects, etc.
+   * Handles the logic to be executed before the request is processed.
+   *
+   * This method checks if the user is logged in and belongs to the required groups.
+   * If the user is not logged in, they are redirected to the login page.
+   * If the user does not belong to the required groups, they are redirected to an
+   * error page or an exception is thrown.
    *
-   * @param RequestInterface $request
-   * @param array|null       $arguments
+   * @param RequestInterface $request   The current request instance.
+   * @param array|null       $arguments The groups required to access the resource.
    *
-   * @return \CodeIgniter\HTTP\RedirectResponse|void;
+   * @return \CodeIgniter\HTTP\RedirectResponse|bool
    */
-  public function before(RequestInterface $request, $arguments = null) {
+  public function before(RequestInterface $request, $arguments = null): \CodeIgniter\HTTP\RedirectResponse|bool {
+    //
+    // Load the 'auth' helper if the 'logged_in' function does not exist
+    //
     if (!function_exists('logged_in')) helper('auth');
 
-    if (empty($arguments)) return;
+    //
+    // If no groups are specified, return false
+    //
+    if (empty($arguments)) {
+      return false;
+    }
 
+    //
+    // Get the authentication service
+    //
     $authenticate = service('authentication');
 
     //
-    // If no user is logged in then send to the login form
+    // If no user is logged in, redirect to the login form
     //
     if (!$authenticate->check()) {
       session()->set('redirect_url', current_url());
       return redirect('login');
     }
 
+    //
+    // Get the authorization service
+    //
     $authorize = service('authorization');
 
     //
     // Check each requested group
     //
     foreach ($arguments as $group) {
-      if ($authorize->inGroup($group, $authenticate->id())) return;
+      if ($authorize->inGroup($group, $authenticate->id())) {
+        return false;
+      }
     }
 
+    //
+    // If the user does not belong to the required groups, handle the response
+    //
     if ($authenticate->silent()) {
-//      $redirectURL = session('redirect_url') ?? '/';
+      // Redirect to the error page
       $redirectURL = '/error';
       unset($_SESSION['redirect_url']);
       return redirect()->to($redirectURL)->with('error', lang('Auth.exception.insufficient_permissions'));
     } else {
+      // Throw a PermissionException
       throw new PermissionException(lang('Auth.exception.insufficient_permissions'));
     }
   }
diff --git a/src/Filters/LoginFilter.php b/src/Filters/LoginFilter.php
index fd86264..bb86cdb 100644
--- a/src/Filters/LoginFilter.php
+++ b/src/Filters/LoginFilter.php
@@ -8,6 +8,7 @@
 use Config\App;
 
 class LoginFilter implements FilterInterface {
+
   /**
    * --------------------------------------------------------------------------
    * Before.
@@ -21,6 +22,9 @@ class LoginFilter implements FilterInterface {
    * @return \CodeIgniter\HTTP\RedirectResponse|bool
    */
   public function before(RequestInterface $request, $arguments = null): \CodeIgniter\HTTP\RedirectResponse|bool {
+    //
+    // Load the 'auth' helper if the 'logged_in' function does not exist
+    //
     if (!function_exists('logged_in')) {
       helper('auth');
     }
diff --git a/src/Filters/PermissionFilter.php b/src/Filters/PermissionFilter.php
index b63e4d2..3234159 100644
--- a/src/Filters/PermissionFilter.php
+++ b/src/Filters/PermissionFilter.php
@@ -8,7 +8,7 @@
 use CI4\Auth\Exceptions\PermissionException;
 
 class PermissionFilter implements FilterInterface {
-  //---------------------------------------------------------------------------
+
   /**
    * --------------------------------------------------------------------------
    * Before.
@@ -23,43 +23,66 @@ class PermissionFilter implements FilterInterface {
    * @param RequestInterface $request
    * @param array|null       $arguments
    *
-   * @return mixed
+   * @return \CodeIgniter\HTTP\RedirectResponse|bool
    */
-  public function before(RequestInterface $request, $arguments = null): mixed {
-    if (!function_exists('logged_in')) helper('auth');
+  public function before(RequestInterface $request, $arguments = null): \CodeIgniter\HTTP\RedirectResponse|bool {
+    //
+    // Load the 'auth' helper if the 'logged_in' function does not exist
+    //
+    if (!function_exists('logged_in')) {
+      helper('auth');
+    }
 
-    if (empty($arguments)) return false;
+    //
+    // If no roles are specified, return without doing anything
+    //
+    if (empty($arguments)) {
+      return false;
+    }
 
+    //
+    // Get the authentication service
+    //
     $authenticate = service('authentication');
 
     //
-    // if no user is logged in then send to the login form
+    // If no user is logged in, redirect to the login form
     //
     if (!$authenticate->check()) {
       session()->set('redirect_url', current_url());
       return redirect('login');
     }
 
+    //
+    // Get the authorization service
+    //
     $authorize = service('authorization');
-    $result = true;
+
     //
-    // Check each requested permission
+    // Check if the user has any of the required permissions
     //
+    $result = true;
     foreach ($arguments as $permission) {
       $result = $result && $authorize->hasPermission($permission, $authenticate->id());
     }
 
+    //
+    // If the user does not have the required permissions, handle the response
+    //
     if (!$result) {
       if ($authenticate->silent()) {
-//                $redirectURL = session('redirect_url') ?? '/';
+        // Redirect to the error page
         $redirectURL = '/error_auth';
         unset($_SESSION['redirect_url']);
         return redirect()->to($redirectURL)->with('error', lang('Auth.exception.insufficient_permissions'));
       } else {
-//                $redirectURL = session('redirect_url') ?? '/';
+
+        // Throw a PermissionException
+//        throw new PermissionException(lang('Auth.exception.insufficient_permissions'));
+
+        // Redirect to the error page
         $redirectURL = '/error_auth';
         unset($_SESSION['redirect_url']);
-//                throw new PermissionException(lang('Auth.exception.insufficient_permissions'));
         return redirect()->to($redirectURL)->with('error', lang('Auth.exception.insufficient_permissions'));
       }
     }
diff --git a/src/Filters/RoleFilter.php b/src/Filters/RoleFilter.php
index ca4f22b..96d0337 100644
--- a/src/Filters/RoleFilter.php
+++ b/src/Filters/RoleFilter.php
@@ -8,52 +8,76 @@
 use CI4\Auth\Exceptions\PermissionException;
 
 class RoleFilter implements FilterInterface {
+
   /**
    * --------------------------------------------------------------------------
    * Before.
    * --------------------------------------------------------------------------
    *
-   * Do whatever processing this filter needs to do. By default it should not
-   * return anything during normal execution. However, when an abnormal state
-   * is found, it should return an instance of CodeIgniter\HTTP\Response. If
-   * it does, script execution will end and that Response will be sent back
-   * to the client, allowing for error pages, redirects, etc.
+   * Handles the logic to be executed before the request is processed.
+   *
+   * This method checks if the user is logged in and has the required roles.
+   * If the user is not logged in, they are redirected to the login page.
+   * If the user does not have the required roles, they are redirected to an
+   * error page or an exception is thrown.
    *
-   * @param RequestInterface $request
-   * @param array|null       $arguments
+   * @param RequestInterface $request   The current request instance.
+   * @param array|null       $arguments The roles required to access the resource.
    *
-   * @return \CodeIgniter\HTTP\RedirectResponse|void
+   * @return \CodeIgniter\HTTP\RedirectResponse|bool
    */
-  public function before(RequestInterface $request, $arguments = null): \CodeIgniter\HTTP\RedirectResponse {
-    if (!function_exists('logged_in')) helper('auth');
+  public function before(RequestInterface $request, $arguments = null): \CodeIgniter\HTTP\RedirectResponse|bool {
+    //
+    // Load the 'auth' helper if the 'logged_in' function does not exist
+    //
+    if (!function_exists('logged_in')) {
+      helper('auth');
+    }
 
-    if (empty($arguments)) return;
+    //
+    // If no roles are specified, return without doing anything
+    //
+    if (empty($arguments)) {
+      return false;
+    }
 
+    //
+    // Get the authentication service
+    //
     $authenticate = service('authentication');
 
     //
-    // If no user is logged in then send to the login form
+    // If no user is logged in, redirect to the login form
     //
     if (!$authenticate->check()) {
       session()->set('redirect_url', current_url());
       return redirect('login');
     }
 
+    //
+    // Get the authorization service
+    //
     $authorize = service('authorization');
 
     //
-    // Check each requested role
+    // Check if the user has any of the required roles
     //
     foreach ($arguments as $role) {
-      if ($authorize->inRole($role, $authenticate->id())) return;
+      if ($authorize->inRole($role, $authenticate->id())) {
+        return false;
+      }
     }
 
+    //
+    // If the user does not have the required roles, handle the response
+    //
     if ($authenticate->silent()) {
-//                $redirectURL = session('redirect_url') ?? '/';
+      // Redirect to the error page
       $redirectURL = '/error';
       unset($_SESSION['redirect_url']);
       return redirect()->to($redirectURL)->with('error', lang('Auth.exception.insufficient_permissions'));
     } else {
+      // Throw a PermissionException
       throw new PermissionException(lang('Auth.exception.insufficient_permissions'));
     }
   }