gistfile1.rb

def update
    @post = Post.find(params[:id])
    
    @post.published_at = @post.update_published(params[:published], @post.published_at)

    if @post.update_attributes(params[:post])
      redirect_to @post, :notice => "Post has been updated."
    else
      flash[:alert] = "Post has not been updated."
      render :action => "edit"
    end
  end

  def destroy
    @post = Post.find(params[:id])
    @post.destroy
    redirect_to root_path, :notice => "Post has been deleted."
  end