1 files changed, 43 insertions, 0 deletions
diff --git a/railties/lib/rails/dev_caching.rb b/railties/lib/rails/dev_caching.rb
new file mode 100644
index 0000000000..f2a53d6417
--- /dev/null
+++ b/railties/lib/rails/dev_caching.rb
@@ -0,0 +1,43 @@
+require 'fileutils'
+
+module Rails
+  module DevCaching # :nodoc:
+    class << self
+      FILE = 'tmp/caching-dev.txt'
+
+      def enable_by_file
+        FileUtils.mkdir_p('tmp')
+
+        if File.exist?(FILE)
+          delete_cache_file
+          puts 'Development mode is no longer being cached.'
+        else
+          create_cache_file
+          puts 'Development mode is now being cached.'
+        end
+
+        FileUtils.touch 'tmp/restart.txt'
+        FileUtils.rm_f('tmp/pids/server.pid')
+      end
+
+      def enable_by_argument(caching)
+        FileUtils.mkdir_p('tmp')
+
+        if caching
+          create_cache_file
+        elsif caching == false && File.exist?(FILE)
+          delete_cache_file
+        end
+      end
+
+      private
+        def create_cache_file
+          FileUtils.touch FILE
+        end
+
+        def delete_cache_file
+          File.delete FILE
+        end
+    end
+  end
+end