1 files changed, 28 insertions, 0 deletions
diff --git a/railties/lib/rails/tasks/railties.rake b/railties/lib/rails/tasks/railties.rake
index e08bd9687d..23d81e6671 100644
--- a/railties/lib/rails/tasks/railties.rake
+++ b/railties/lib/rails/tasks/railties.rake
@@ -17,4 +17,32 @@ namespace :railties do
       puts "Created symlink #{symlink_path} -> #{path}"
     end
   end
+
+  namespace :install do
+    desc "Copies missing assets from Railties (e.g. plugins, engines). You can specify Railties to use with FROM=railtie1,railtie2"
+    task :assets => :rails_env do
+      require 'rails/generators/base'
+      Rails.application.initialize!
+
+      to_load = ENV["FROM"].blank? ? :all : ENV["FROM"].split(",").map {|n| n.strip }
+      app_public_path = Rails.application.paths["public"].first
+
+      Rails.application.railties.all do |railtie|
+        next unless to_load == :all || to_load.include?(railtie.railtie_name)
+
+        if railtie.respond_to?(:paths) && (path = railtie.paths["public"].first) &&
+           (assets_dir = railtie.config.compiled_asset_path) && File.exist?(path)
+
+          Rails::Generators::Base.source_root(path)
+          copier = Rails::Generators::Base.new
+          Dir[File.join(path, "**/*")].each do |file|
+            relative = file.gsub(/^#{path}\//, '')
+            if File.file?(file)
+              copier.copy_file relative, File.join(app_public_path, assets_dir, relative)
+            end
+          end
+        end
+      end
+    end
+  end
 end