Only redirect GET/HEAD if system.pages.redirect_trailing_slash is true and request has a trailing slash

CHANGELOG.md

@@ -22,6 +22,7 @@
     * Fixed renaming flex objects key when using file storage
     * Fixed wrong values in Admin pages list [#3214](https://github.com/getgrav/grav/issues/3214)
     * Fixed pipelined asset using different hash when extra asset is added to before/after position [#2781](https://github.com/getgrav/grav/issues/2781)
+    * Only redirect GET/HEAD if `system.pages.redirect_trailing_slash` is true and request has a trailing slash
 
 # v1.7.5
 ## 02/01/2021

system/src/Grav/Common/Processors/InitializeProcessor.php

@@ -30,6 +30,7 @@ use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
 use function defined;
+use function in_array;
 
 /**
  * Class InitializeProcessor
@@ -414,6 +415,10 @@ class InitializeProcessor extends ProcessorBase
 
     protected function handleRedirectRequest(RequestInterface $request): ?ResponseInterface
     {
+        if (!in_array($request->getMethod(), ['GET', 'HEAD'])) {
+            return null;
+        }
+
         // Redirect pages with trailing slash if configured to do so.
         $uri = $request->getUri();
         $path = $uri->getPath() ?: '/';