Set no-cache headers on pages with image transform generation URLs

Resolves #16195
craftcms · Dec 10, 2024 · d7dce98 · d7dce98
1 parent 909770e
commit d7dce98
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diff --git a/CHANGELOG-WIP.md b/CHANGELOG-WIP.md
@@ -8,4 +8,5 @@
 
 ## System
 - Database rows with foreign keys referencing nonexistent rows are now deleted via garbage collection.
+- Pages which contain image transform generation URLs now set no-cache headers. ([#16195](https://github.com/craftcms/cms/discussions/16195))
 - Updated Twig to 3.15. ([#16207](https://github.com/craftcms/cms/discussions/16207))
diff --git a/src/imagetransforms/ImageTransformer.php b/src/imagetransforms/ImageTransformer.php
@@ -110,6 +110,9 @@ public function getTransformUrl(Asset $asset, ImageTransform $imageTransform, bo
                     'transformId' => $index->id,
                 ]), 2048);
 
+                // Prevent the page from being cached
+                Craft::$app->getResponse()->setNoCacheHeaders();
+
                 // Return the temporary transform URL
                 return UrlHelper::actionUrl('assets/generate-transform', [
                     'transformId' => $index->id,