1 files changed, 37 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/routes/routes_command.rb b/railties/lib/rails/commands/routes/routes_command.rb
new file mode 100644
index 0000000000..b592a5212f
--- /dev/null
+++ b/railties/lib/rails/commands/routes/routes_command.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require "rails/command"
+
+module Rails
+  module Command
+    class RoutesCommand < Base # :nodoc:
+      class_option :controller, aliases: "-c", desc: "Filter by a specific controller, e.g. PostsController or Admin::PostsController."
+      class_option :grep, aliases: "-g", desc: "Grep routes by a specific pattern."
+      class_option :expanded, type: :boolean, aliases: "-E", desc: "Print routes expanded vertically with parts explained."
+
+      def perform(*)
+        require_application_and_environment!
+        require "action_dispatch/routing/inspector"
+
+        say inspector.format(formatter, routes_filter)
+      end
+
+      private
+        def inspector
+          ActionDispatch::Routing::RoutesInspector.new(Rails.application.routes.routes)
+        end
+
+        def formatter
+          if options.key?("expanded")
+            ActionDispatch::Routing::ConsoleFormatter::Expanded.new
+          else
+            ActionDispatch::Routing::ConsoleFormatter::Sheet.new
+          end
+        end
+
+        def routes_filter
+          options.symbolize_keys.slice(:controller, :grep)
+        end
+    end
+  end
+end