Merge pull request rails#54675 from skipkayhil/hm-lazy-visualizer

Fix creating fsm visualizer with lazy routes

Author: byroot

actionpack/lib/action_dispatch/journey/router.rb

@@ -98,24 +98,7 @@ def recognize(req, &block)
         end
       end
 
-      def visualizer
-        tt     = GTG::Builder.new(ast).transition_table
-        groups = partitioned_routes.first.map(&:ast).group_by(&:to_s)
-        asts   = groups.values.map(&:first)
-        tt.visualizer(asts)
-      end
-
       private
-        def partitioned_routes
-          routes.partition { |r|
-            r.path.anchored && r.path.requirements_anchored?
-          }
-        end
-
-        def ast
-          routes.ast
-        end
-
         def simulator
           routes.simulator
         end
@@ -125,7 +108,6 @@ def custom_routes
         end
 
         def filter_routes(path)
-          return [] unless ast
           simulator.memos(path) { [] }
         end
 

actionpack/lib/action_dispatch/journey/routes.rb

@@ -72,6 +72,13 @@ def add_route(name, mapping)
         route
       end
 
+      def visualizer
+        tt     = GTG::Builder.new(ast).transition_table
+        groups = anchored_routes.map(&:ast).group_by(&:to_s)
+        asts   = groups.values.map(&:first)
+        tt.visualizer(asts)
+      end
+
       private
         def clear_cache!
           @ast                = nil