Add --mountable option to 'plugin new' generator which generates full mountable application (engine)

railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb

@@ -7,6 +7,10 @@ module Rails
       template "Rakefile"
     end
 
+    def app
+      directory "app" if options[:mountable]
+    end
+
     def readme
       copy_file "README.rdoc"
     end
@@ -35,6 +39,10 @@ module Rails
       end
     end
 
+    def config
+      template "config/routes.rb" if mountable?
+    end
+
     def test
       template "test/test_helper.rb"
       template "test/%name%_test.rb"
@@ -59,6 +67,9 @@ task :default => :test
     def test_dummy_config
       template "rails/boot.rb", "#{dummy_path}/config/boot.rb", :force => true
       template "rails/application.rb", "#{dummy_path}/config/application.rb", :force => true
+      if mountable?
+        template "rails/routes.rb", "#{dummy_path}/config/routes.rb", :force => true
+      end
     end
 
     def test_dummy_clean
@@ -91,8 +102,11 @@ task :default => :test
 
       alias_method :plugin_path, :app_path
 
-      class_option :full, :type => :boolean, :default => false,
-                          :desc => "Generate rails engine with integration tests"
+      class_option :full,       :type => :boolean, :default => false,
+                                :desc => "Generate rails engine with integration tests"
+
+      class_option :mountable,  :type => :boolean, :default => false,
+                                :desc => "Generate mountable isolated application"
 
       def initialize(*args)
         raise Error, "Options should be given after the plugin name. For details run: rails plugin --help" if args[0].blank?
@@ -111,6 +125,10 @@ task :default => :test
         build(:gemfile)   unless options[:skip_gemfile]
       end
 
+      def create_app_files
+        build(:app)
+      end
+
       def create_config_files
         build(:config)
       end
@@ -154,7 +172,11 @@ task :default => :test
       end
 
       def full?
-        options[:full]
+        options[:full] || options[:mountable]
+      end
+
+      def mountable?
+        options[:mountable]
       end
 
       def self.banner

railties/lib/rails/generators/rails/plugin_new/templates/app/controllers/%name%/application_controller.rb.tt

@@ -0,0 +1,4 @@
+module <%= camelized %>
+  class ApplicationController < ActiveController::Base
+  end
+end

railties/lib/rails/generators/rails/plugin_new/templates/app/helpers/%name%/application_helper.rb.tt

@@ -0,0 +1,4 @@
+module <%= camelized %>
+  module ApplicationHelper
+  end
+end

railties/lib/rails/generators/rails/plugin_new/templates/config/routes.rb

@@ -0,0 +1,3 @@
+<%= camelized %>::Engine.routes.draw do
+
+end

railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/engine.rb

@@ -1,4 +1,7 @@
 module <%= camelized %>
   class Engine < Rails::Engine
+<% if  mountable? -%>
+      isolate_namespace <%= camelized %>
+<% end  -%>
   end
 end

railties/lib/rails/generators/rails/plugin_new/templates/rails/routes.rb

@@ -0,0 +1,4 @@
+Rails.application.routes.draw do
+
+  mount <%= camelized %>::Engine => "/<%= name %>"
+end

railties/test/generators/plugin_new_generator_test.rb

@@ -131,6 +131,15 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase
     assert_no_match /create\s+config\/application.rb/, run_generator
   end
 
+  def test_create_mountable_application_with_mountable_option
+    run_generator [destination_root, "--mountable"]
+    assert_file "config/routes.rb", /Bukkits::Engine.routes.draw do/
+    assert_file "lib/bukkits/engine.rb", /isolate_namespace Bukkits/
+    assert_file "test/dummy/config/routes.rb", /mount Bukkits::Engine => "\/bukkits"/
+    assert_file "app/controllers/bukkits/application_controller.rb", /module Bukkits\n  class ApplicationController < ActiveController::Base/
+    assert_file "app/helpers/bukkits/application_helper.rb", /module Bukkits\n  module ApplicationHelper/
+  end
+
 protected
 
   def action(*args, &block)