Help with nesting comments

_comment.html.erb

<div class="comment_<%= comment.id %>">
	
	<p><%= comment.comment %></p>
	<div class="comment_info">
		Written by: <%= comment.user.name %> | 
		You can: <%= link_to 'Reply To Comment', new_task_comment_path(@task.id, :parent_id => comment) %> or
		<%= link_to 'Edit Comment', edit_task_comment_path(comment.task.project.id, comment.id) %>  |
		<%= link_to 'Delete Comment', task_comment_path(@project.id, comment.id), :method => :delete%>
	</div>
</div>

_createcomments.html.erb

<%= form_for ([@task, @task.comments.build]) do |f| %>
    <%= f.text_area :comment %>
    <%= f.hidden_field :parent_id%>
    <%= f.submit %>
<% end %>

coments_model.rb

class Comment < ActiveRecord::Base  
  attr_accessible :comment, :user_id, :parent_id 

  #why do I need parent_id? there’s no column in the db for it....
  #According to the documentation and examples, I don't need to have this but it freaks
  #out if I dont have it.....TEH FUCK
  
  has_ancestry
  
  belongs_to :task
  belongs_to :user
  
  validates :comment, :presence => true
end

comments.rb

class CommentsController < ApplicationController
  
  before_filter :find_comment_id, :only => [:show, :edit, :update, :destroy]
  
  def index
    @comment = Comment.new
    @comments = Comment.all
  end
  
  def new
    @task = Task.find(params[:task_id])
    @task.comments.new(:parent_id => params[:parent_id])
  end
  
  def create
    @task = Task.find(params[:task_id])
    @task_comment = @task.comments.create(params[:comment].merge(:user_id => current_user.id))
    if @task_comment.save  
      redirect_to project_task_path(@task.project, @task), :flash => {:success => 'Created Comment.'}
    else
      redirect_to project_task_path(@task.project, @task), :flash => {:error => 'Cannot have empty comments.'}
    end
  end
  
  def show
  end
    
  def edit
  end
  
  def update
    if @comment.update_attributes(params[:comment])
      redirect_to project_task_path(@comment.task.project, @comment.task), :flash => {:success => 'Edited the comment'}
    else
      redirect_to project_task_path(@comment.task.project, @comment.task), :flash => {:error => 'Could not update empty comment'}
    end
  end  
  
  def destroy
    @comment.destroy
    redirect_to project_task_path(@comment.task.project, @comment.task), :flash => {:success => 'We deleted your comment.'}
  end
  
  private
  
  def find_comment_id
    @comment = Comment.find(params[:id])
  end
end

comments_helper.rb

module CommentsHelper
  def nested_comments(comments)
    comments.map do |comment, sub_comments|
      render(comment) + content_tag(:div, nested_comments(sub_comments), :class => 'nested_comments')
    end.join.html_safe
  end
end

example_what_it_should_look_like.html

<!-- This is what it should, in theory resemble, in structure -->

{ #<TreeNode id: 100018, name: "Stinky", ancestry: nil>
  => { #<TreeNode id: 100019, name: "Crunchy", ancestry: "100018">
    => { #<TreeNode id: 100020, name: "Squeeky", ancestry: "100018/100019">
      => {}
    }
  }
}

<!-- But this is what mine looks like.... -->

{#<Comment id: 4, comment: "Example Comment", created_at: "2012-09-13 20:37:35", updated_at: "2012-09-13 20:37:35", task_id: 2, user_id: 1, ancestry: nil>=>{}, #<Comment id: 5, comment: "Example Reply\r\n", created_at: "2012-09-13 20:37:42", updated_at: "2012-09-13 20:37:42", task_id: 2, user_id: 1, ancestry: nil>=>{}} 

<!-- So there is obviously something wrong here.... -->

page_source.html

<div class="comment_23">
	
	<p>I am a comment</p>
	<div class="comment Info">
		Written by: Adam | 
		You can: <a href="/tasks/7/comments/new?parent_id=23">Reply To Comment</a> or
		<a href="/tasks/1/comments/23/edit">Edit Comment</a>  |
		<a href="/tasks/1/comments/23" data-method="delete" rel="nofollow">Delete Comment</a>
	</div>
</div>
<div class="nested_comments"></div><div class="comment_24">
	
	<p>I am another comment</p>
	<div class="comment Info">
		Written by: Adam | 
		You can: <a href="/tasks/7/comments/new?parent_id=24">Reply To Comment</a> or
		<a href="/tasks/1/comments/24/edit">Edit Comment</a>  |
		<a href="/tasks/1/comments/24" data-method="delete" rel="nofollow">Delete Comment</a>
	</div>
</div>
<div class="nested_comments"></div><div class="comment_25">
	
	<p>I am a reply to the first comment</p>
	<div class="comment Info">
		Written by: Adam | 
		You can: <a href="/tasks/7/comments/new?parent_id=25">Reply To Comment</a> or
		<a href="/tasks/1/comments/25/edit">Edit Comment</a>  |
		<a href="/tasks/1/comments/25" data-method="delete" rel="nofollow">Delete Comment</a>
	</div>
</div>
<div class="nested_comments"></div>