From f82809a9705a1fab0c5b44fdabdec587900ecace Mon Sep 17 00:00:00 2001
From: Marwin Hochfelsner <50826859+hlfan@users.noreply.github.com>
Date: Tue, 10 Feb 2026 02:55:52 +0000
Subject: [PATCH] Add asset routing transformation for inline SVG images

---
 config/initializers/inline_svg.rb | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/config/initializers/inline_svg.rb b/config/initializers/inline_svg.rb
index 945c89a4f..3bd830978 100644
--- a/config/initializers/inline_svg.rb
+++ b/config/initializers/inline_svg.rb
@@ -8,8 +8,19 @@ module OpenStreetMap
       end
     end
   end
+
+  class AssetRoutingTransform < InlineSvg::CustomTransformation
+    def transform(doc)
+      with_svg(doc) do |svg|
+        svg.css("image").each do |image|
+          image["href"] = ActionController::Base.helpers.asset_path(image["href"].sub(%r{\A[./]+}, ""))
+        end
+      end
+    end
+  end
 end
 
 InlineSvg.configure do |config|
   config.add_custom_transformation(:attribute => :to_symbol, :transform => OpenStreetMap::SvgToSymbolTransform)
+  config.add_custom_transformation(:attribute => :asset_path, :transform => OpenStreetMap::AssetRoutingTransform, :default_value => true)
 end
-- 
2.39.5