"Monkey cherry-picking": Freehand patching via Git and the clipboard...

gistfile1.txt

$ git diff HEAD subscribers_decorator | cat
diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 245393c..6a1639a 100644
...
Big 'ol list of stuff I don't want...
...
Followed by a portion that I do...
...
$ # I manually copy the portion of the diff I want.
$ # `pbpaste` shows you the clipboard contents.
$ pbpaste
diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 245393c..6a1639a 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -22,7 +23,8 @@ class PostsController < ApplicationController
   end
 
   def create
-    @post = Post.new(post_params)
+    @post = PostDecorator.new(Post.new(post_params))
+    @post.user = User.create
     @post.tag_list = tag_params[:tag_list]
     if @post.save
       redirect_to @post, notice: 'Post was successfully created.'
diff --git a/app/decorators/post_decorator.rb b/app/decorators/post_decorator.rb
new file mode 100644
index 0000000..eea3b86
--- /dev/null
+++ b/app/decorators/post_decorator.rb
@@ -0,0 +1,21 @@
+class PostDecorator
+  def initialize(post)
+    @post = post
+  end
+  def method_missing(method_name, *args, &block)
+    @post.send(method_name, *args, &block)
+  end
+  def respond_to_missing?(method_name, include_private = false)
+    super || @post.respond_to?(method_name, include_private)
+  end
+  def save
+    if @post.save
+      user.subscribers.each do |subscriber|
+        SubscriberMailer.update(subscriber, self).deliver
+      end
+    end
+  end
+  def formatted_date
+    @post.created_at.strftime('%Y-%m-%d')
+  end
+end
$ # Note that it spans multiple files.
$ # I even took a one change that I wanted from one file and ignored the rest.
$ # Here's the cool part. `git apply -` takes a patch from STDIN...
$ pbpaste | git apply -
$ git add .
$ # Now, look: from clipboard to working directory!
$ git diff --staged | cat
diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 245393c..0fc053c 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -22,7 +22,8 @@ class PostsController < ApplicationController
   end
 
   def create
-    @post = Post.new(post_params)
+    @post = PostDecorator.new(Post.new(post_params))
+    @post.user = User.create
     @post.tag_list = tag_params[:tag_list]
     if @post.save
       redirect_to @post, notice: 'Post was successfully created.'
diff --git a/app/decorators/post_decorator.rb b/app/decorators/post_decorator.rb
new file mode 100644
index 0000000..eea3b86
--- /dev/null
+++ b/app/decorators/post_decorator.rb
@@ -0,0 +1,21 @@
+class PostDecorator
+  def initialize(post)
+    @post = post
+  end
+  def method_missing(method_name, *args, &block)
+    @post.send(method_name, *args, &block)
+  end
+  def respond_to_missing?(method_name, include_private = false)
+    super || @post.respond_to?(method_name, include_private)
+  end
+  def save
+    if @post.save
+      user.subscribers.each do |subscriber|
+        SubscriberMailer.update(subscriber, self).deliver
+      end
+    end
+  end
+  def formatted_date
+    @post.created_at.strftime('%Y-%m-%d')
+  end
+end

Just what I needed today. "Monkey cherry pick" - love it!

Cheerssssssss!!!