Fix JSP forward/include under Rails 7

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.2.7 (UNRELEASED)
+
+- Fix ability to include and forward to JSPs under Rails (#370)
+
 ## 1.2.6
 
 - Add missing block-only signature for debug logging

examples/README.md

@@ -28,19 +28,24 @@ As an executable jar within Jetty:
 
 ## Demo routes
 
-| Example | Component                     | Embedded Route                    | Deployed War Route                       |
-|---------|-------------------------------|-----------------------------------|------------------------------------------|
-| Rails 7 | Status Page                   | http://localhost:8080/up          | http://localhost:8080/rails7/up          |
-| Rails 7 | Snoop Dump                    | http://localhost:8080/snoop       | http://localhost:8080/rails7/snoop       |
-| Rails 7 | Embedded JSP (non-functional) | http://localhost:8080/jsp/        | http://localhost:8080/rails7/jsp/        |
-| Rails 7 | Simple Form submission        | http://localhost:8080/simple_form | http://localhost:8080/rails7/simple_form |
-| Rails 7 | Body Posts                    | http://localhost:8080/body        | http://localhost:8080/rails7/body        |
-| Sinatra | Demo Index                    | http://localhost:8080/            | http://localhost:8080/sinatra            |
-| Sinatra | Info                          | http://localhost:8080/info        | http://localhost:8080/sinatra/info       |
-| Sinatra | Snoop Dump                    | http://localhost:8080/env         | http://localhost:8080/sinatra/env        |
-| Sinatra | Streaming Demo                | http://localhost:8080/stream      | http://localhost:8080/sinatra/stream     |
-| Camping | Demo Index                    | http://localhost:8080/            | http://localhost:8080/camping            |
-| Camping | Snoop Dump                    | http://localhost:8080/snoop       | http://localhost:8080/camping/snoop      |
+| Example | Component              | Embedded Route                      | Deployed War Route                          |
+|---------|------------------------|-------------------------------------|---------------------------------------------|
+| Rails 7 | Status Page            | http://localhost:8080/up            | http://localhost:8080/rails7/up             |
+| Rails 7 | Snoop Dump             | http://localhost:8080/snoop         | http://localhost:8080/rails7/snoop          |
+| Rails 7 | Simple Form submission | http://localhost:8080/simple_form   | http://localhost:8080/rails7/simple_form    |
+| Rails 7 | Body Posts             | http://localhost:8080/body          | http://localhost:8080/rails7/body           |
+| Rails 7 | JSP (render)           | http://localhost:8080/jsp/          | http://localhost:8080/rails7/jsp/           |
+| Rails 7 | JSP (forward to)       | http://localhost:8080/jsp-forward/  | http://localhost:8080/rails7/jsp-forward/   |
+| Rails 7 | JSP (include)          | http://localhost:8080/jsp-include/  | http://localhost:8080/rails7/jsp-include/   |
+| Sinatra | Demo Index             | http://localhost:8080/              | http://localhost:8080/sinatra               |
+| Sinatra | Info                   | http://localhost:8080/info          | http://localhost:8080/sinatra/info          |
+| Sinatra | Snoop Dump             | http://localhost:8080/env           | http://localhost:8080/sinatra/env           |
+| Sinatra | JSP (render)           | http://localhost:8080/jsp/index.jsp | http://localhost:8080/sinatra/jsp/index.jsp |
+| Sinatra | JSP (forward to)       | http://localhost:8080/jsp_forward   | http://localhost:8080/sinatra/jsp_forward   |
+| Sinatra | JSP (include)          | http://localhost:8080/jsp_include   | http://localhost:8080/sinatra/jsp_include   |
+| Sinatra | Streaming Demo         | http://localhost:8080/stream        | http://localhost:8080/sinatra/stream        |
+| Camping | Demo Index             | http://localhost:8080/              | http://localhost:8080/camping               |
+| Camping | Snoop Dump             | http://localhost:8080/snoop         | http://localhost:8080/camping/snoop         |
 
 ## Development
 

src/main/ruby/jruby/rack/rack_ext.rb

@@ -17,7 +17,7 @@
 module JRuby
   module Rack
     module RackExt
-      module Request
+      module RequestHelpers
         java_import org.jruby.rack.servlet.ServletRackIncludedResponse
 
         def forward_to(path, params={})
@@ -38,8 +38,18 @@ def render(path, params={})
         end
       end
 
-      ::Rack::Request.module_eval do
-        include ::JRuby::Rack::RackExt::Request
+      if JRUBY_VERSION >= '9.4'
+        ::Rack::Request::Helpers.module_eval do
+          include ::JRuby::Rack::RackExt::RequestHelpers
+        end
+      else
+        ::Rack::Request.module_eval do
+          include ::JRuby::Rack::RackExt::RequestHelpers
+        end
+
+        ::ActionDispatch::Request.module_eval do
+          include ::JRuby::Rack::RackExt::RequestHelpers
+        end if defined?(::ActionDispatch::Request)
       end
     end
   end

src/spec/ruby/jruby/rack/rack_ext_spec.rb

@@ -8,7 +8,7 @@
 require File.expand_path('spec_helper', File.dirname(__FILE__) + '/../..')
 require 'jruby/rack/rack_ext'
 
-describe Rack::Request do
+describe JRuby::Rack::RackExt do
   before :each do
     @servlet_request = double("servlet_request")
     @servlet_response = double("servlet_response")