1 files changed, 54 insertions, 0 deletions
diff --git a/railties/lib/rails/info_controller.rb b/railties/lib/rails/info_controller.rb
new file mode 100644
index 0000000000..14459623ac
--- /dev/null
+++ b/railties/lib/rails/info_controller.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require "rails/application_controller"
+require "action_dispatch/routing/inspector"
+
+class Rails::InfoController < Rails::ApplicationController # :nodoc:
+  prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATH
+  layout -> { request.xhr? ? false : "application" }
+
+  before_action :require_local!
+
+  def index
+    redirect_to action: :routes
+  end
+
+  def properties
+    respond_to do |format|
+      format.html do
+        @info = Rails::Info.to_html
+        @page_title = "Properties"
+      end
+
+      format.json do
+        render json: Rails::Info.to_json
+      end
+    end
+  end
+
+  def routes
+    if path = params[:path]
+      path = URI.parser.escape path
+      normalized_path = with_leading_slash path
+      render json: {
+        exact: match_route { |it| it.match normalized_path },
+        fuzzy: match_route { |it| it.spec.to_s.match path }
+      }
+    else
+      @routes_inspector = ActionDispatch::Routing::RoutesInspector.new(_routes.routes)
+      @page_title = "Routes"
+    end
+  end
+
+  private
+
+    def match_route
+      _routes.routes.select { |route|
+        yield route.path
+      }.map { |route| route.path.spec.to_s }
+    end
+
+    def with_leading_slash(path)
+      ("/" + path).squeeze("/")
+    end
+end