Add a rake task to apply a template to an existing application.

Example : rake rails:template LOCATION=~/template.rb

railties/CHANGELOG

@@ -1,5 +1,7 @@
 *2.3.0 [Edge]*
 
+* Add a rake task to apply a template to an existing application : rake rails:template LOCATION=~/template.rb [Pratik]
+
 * Add "-m/--template" option to Rails generator to apply a template to the generated application. [Jeremy McAnally]
 
     This has been extracted from rg - http://github.com/jeremymcanally/rg

railties/lib/rails_generator/generators/applications/app/app_generator.rb

@@ -40,7 +40,7 @@ class AppGenerator < Rails::Generator::Base
 
   def after_generate
     if options[:template]
-      Rails::TemplateRunner.new(@destination_root, options[:template])
+      Rails::TemplateRunner.new(options[:template], @destination_root)
     end
   end
 

railties/lib/rails_generator/generators/applications/app/template_runner.rb

@@ -9,8 +9,8 @@ module Rails
   class TemplateRunner
     attr_reader :root
 
-    def initialize(root, template) # :nodoc:
-      @root = Dir.pwd + "/" + root
+    def initialize(template, root = '') # :nodoc:
+      @root = File.join(Dir.pwd, root)
 
       puts "applying template: #{template}"
 

railties/lib/tasks/framework.rake

@@ -80,6 +80,12 @@ namespace :rails do
   desc "Update both configs, scripts and public/javascripts from Rails"
   task :update => [ "update:scripts", "update:javascripts", "update:configs", "update:application_controller" ]
 
+  desc "Applies the template supplied by LOCATION=/path/to/template"
+  task :template do
+    require 'rails_generator/generators/applications/app/template_runner'
+    Rails::TemplateRunner.new(ENV["LOCATION"])
+  end
+
   namespace :update do
     desc "Add new scripts to the application script/ directory"
     task :scripts do