jtanium · March 11, 2025 21:12 · Jul 30, 2013 · Jul 30, 2013
diff --git a/gistfile1.rb → recognize_path.rb b/gistfile1.rb → recognize_path.rb
diff --git a/gistfile1.rb b/gistfile1.rb
@@ -0,0 +1,28 @@
+  module RecognizePath
+    def recognize_path(path, options)
+      recognized_path = Rails.application.routes.recognize_path(path, options)
+
+      # We have a route that catches everything and sends it to 'errors#not_found', you might
+      # need to rescue ActionController::RoutingError
+      return recognized_path unless recognized_path.slice(:controller, :action) == {controller: 'errors', action: 'not_found'}
+
+      # The main app didn't recognize the path, try the engines...
+      Rails.application.railties.engines.each do |engine|
+
+        # Find the route to the engine, e.g. '/blog' -> Blog::Engine (a.k.a. "mount")
+        engine_route = Rails.application.routes.routes.find { |r| r.app.to_s == engine.class.to_s }
+        next unless engine_route
+
+        # The engine won't recognize the "mount", so strip it off the path,
+        # e.g. '/blog/posts/new'.gsub(%r(^/blog), '') #=> '/posts/new', which will be recognized by the engine
+        path_for_engine = path.gsub(%r(^#{engine_route.path.spec.to_s}), '')
+        begin
+          recognized_path = engine.routes.recognize_path(path_for_engine, options)
+        rescue ActionController::RoutingError => e
+          Rails.logger.debug "[#{engine}] ActionController::RoutingError: #{e.message}"
+        end
+      end
+
+      recognized_path
+    end
+  end