Nested model create action using SpamHam

comments_controller.rb

  def create
	@post = Post.find(params[:post_id]) if params[:post_id]
	@post = Post.find(params[:comment][:post_id]) if params[:comment][:post_id]
	@comment = @post.comments.new(params[:comment])
	@comment.user_id = current_user.id if current_user
	if @comment.body.spam? then
		unless params[:recaptcha_challenge_field] then
			flash[:error] = "Comment looks like Spam"
			render :action => 'new'
		else
			if validate_recap(params, @comment.errors) && @comment.save then
				flash[:notice] = "Successfully created comment."
				redirect_to @comment.post
			else
				render :action => 'new'
			end
		end
	else
		if @comment.save
			flash[:notice] = "Successfully created comment."
			redirect_to @comment.post
		else
			render :action => 'new'
		end
	end
  end