Add a PageGlobalToPageFinderServiceRector

config/sets/contao/contao-53.php

@@ -5,6 +5,7 @@
 use Contao\CoreBundle\File\ModelMetadataTrait;
 use Contao\CoreBundle\Security\ContaoCorePermissions;
 use Contao\Model\MetadataTrait;
+use Contao\Rector\Rector\PageGlobalToPageFinderServiceRector;
 use Contao\Rector\Rector\StringReplaceRector;
 use Rector\Config\RectorConfig;
 use Rector\Renaming\Rector\ClassConstFetch\RenameClassConstFetchRector;
@@ -24,4 +25,6 @@
     $rectorConfig->ruleWithConfiguration(RenameClassRector::class, [
         ModelMetadataTrait::class => MetadataTrait::class
     ]);
+
+    $rectorConfig->rule(PageGlobalToPageFinderServiceRector::class);
 };

src/Rector/PageGlobalToPageFinderServiceRector.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Contao\Rector\Rector;
+
+use Contao\System;
+use PhpParser\Node;
+use Rector\Rector\AbstractRector;
+
+final class PageGlobalToPageFinderServiceRector extends AbstractRector
+{
+    public function getNodeTypes(): array
+    {
+        return [Node\Stmt\Global_::class];
+    }
+
+    public function refactor(Node $node): Node|null
+    {
+        assert($node instanceof Node\Stmt\Global_);
+
+        foreach ($node->vars as $var) {
+            if (!$this->isName($var, 'objPage')) {
+                continue;
+            }
+
+            $variable = new Node\Expr\Variable('objPage');
+
+            $container = new Node\Expr\StaticCall(new Node\Name\FullyQualified(System::class), 'getContainer');
+            $service = new Node\Expr\MethodCall($container, 'get', [new Node\Arg(new Node\Scalar\String_('contao.routing.page_finder'))]);
+            $call = new Node\Expr\MethodCall($service, 'getCurrentPage');
+
+
+            return new Node\Stmt\Expression(
+                new Node\Expr\Assign(
+                    $variable,
+                    $call
+                )
+            );
+        }
+
+        return null;
+    }
+}