docs: use Request::is() instead of getMethod()

user_guide_src/source/libraries/security.rst

@@ -44,18 +44,22 @@ Do one of the following:
 
 E.g.::
 
-    if (strtolower($this->request->getMethod()) !== 'post') {
+    if (! $this->request->is('post')) {
         return $this->response->setStatusCode(405)->setBody('Method Not Allowed');
     }
 
+.. note:: The :ref:`$this->request->is() <incomingrequest-is>` method can be used since v4.3.0.
+    In previous versions, you need to use
+    ``if (strtolower($this->request->getMethod()) !== 'post')``.
+
 When Auto-Routing is Enabled
 ----------------------------
 
 1. Check the request method in the controller method before processing.
 
 E.g.::
 
-    if (strtolower($this->request->getMethod()) !== 'post') {
+    if (! $this->request->is('post')) {
         return $this->response->setStatusCode(405)->setBody('Method Not Allowed');
     }
 

user_guide_src/source/libraries/validation.rst

@@ -121,6 +121,10 @@ this code and save it to your **app/Controllers/** folder:
 
 .. literalinclude:: validation/001.php
 
+.. note:: The :ref:`$this->request->is() <incomingrequest-is>` method can be used since v4.3.0.
+    In previous versions, you need to use
+    ``if (strtolower($this->request->getMethod()) !== 'post')``.
+
 The Routes
 ==========
 

user_guide_src/source/libraries/validation/001.php

@@ -10,7 +10,7 @@ class Form extends BaseController
 
     public function index()
     {
-        if (strtolower($this->request->getMethod()) !== 'post') {
+        if (! $this->request->is('post')) {
             return view('signup');
         }