Index: head/devel/Makefile
===================================================================
--- head/devel/Makefile
+++ head/devel/Makefile
@@ -5450,6 +5450,7 @@
     SUBDIR += rubygem-rb-kqueue
     SUBDIR += rubygem-rbtrace
     SUBDIR += rubygem-rdoc
+    SUBDIR += rubygem-react-rails
     SUBDIR += rubygem-readwritesettings
     SUBDIR += rubygem-recaptcha
     SUBDIR += rubygem-recursive-open-struct
Index: head/devel/rubygem-react-rails/Makefile
===================================================================
--- head/devel/rubygem-react-rails/Makefile
+++ head/devel/rubygem-react-rails/Makefile
@@ -0,0 +1,25 @@
+# $FreeBSD$
+
+PORTNAME=	react-rails
+PORTVERSION=	1.11.0
+CATEGORIES=	devel rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	jrm@FreeBSD.org
+COMMENT=	React/JSX adapter for the Ruby on Rails asset pipeline
+
+LICENSE=	APACHE20
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+RUN_DEPENDS=	rubygem-babel-transpiler>=0.7.0:textproc/rubygem-babel-transpiler \
+		rubygem-connection_pool>=0:net/rubygem-connection_pool \
+		rubygem-execjs>=0:devel/rubygem-execjs \
+		rubygem-railties4>0:www/rubygem-railties4 \
+		rubygem-tilt>=0:devel/rubygem-tilt
+
+NO_ARCH=	yes
+
+USE_RUBY=	yes
+USES=		gem
+
+.include <bsd.port.mk>
Index: head/devel/rubygem-react-rails/distinfo
===================================================================
--- head/devel/rubygem-react-rails/distinfo
+++ head/devel/rubygem-react-rails/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1491835416
+SHA256 (rubygem/react-rails-1.11.0.gem) = 4fdbc3d9f3d1a5d8abdbba3735015efa6417c1d29478b7761053fd9facd3f491
+SIZE (rubygem/react-rails-1.11.0.gem) = 968704
Index: head/devel/rubygem-react-rails/pkg-descr
===================================================================
--- head/devel/rubygem-react-rails/pkg-descr
+++ head/devel/rubygem-react-rails/pkg-descr
@@ -0,0 +1,11 @@
+react-rails makes it easy to use React and JSX in your Ruby on Rails
+application.  It can
+
+- provide various react builds to your asset bundle
+- transform .jsx in the asset pipeline
+- render components into views and mount them via view helper and react_ujs
+- render components server-side with prerender: true
+- generate components with a Rails generator
+- be extended with custom renderers, transformers and view helpers
+
+WWW: https://github.com/reactjs/react-rails