Rails - Jun 2006 - sortable acts_as_tree with heirarchy

I''ve been stumbling on the tut at oriontransfer 
(http://wiki.oriontransfer.co.nz/main/show/SortableTree)

I''ve got it working in a one dimensional list and I''ve got the
drag and
drop working on children, but as can''t get it to save the tree.

Here''s my view:
<h2>Menu Prototype 2</h2>
<%= flash[:notice] %>
<ul id="menu">
<% @navigation.each do |link| %>
	<li class="edit_link level<%= link.parent_id %>"
id="_<%= link.id.to_s
%>">
		<%= link.name %>
		<ul class="edit_list">
		<% link.children.each do |child| %>
			<li class="edit_link level<%= child.parent_id %>"
id="_<%=
child.id.to_s %>">
				<%= child.name %>
			</li>
		<% end -%>
		</ul>
	</li>
<% end -%>
</ul>

<%= sortable_element ''menu'',
:url => { :action => "sort", :id => @navigation },
:complete => visual_effect(:highlight, ''menu''), :tree =>
true
%>

<div id="debug">
</div>

Here''s the action:

def change_hierarchy
      change_links params[:menu]
    end

    def change_links (links_hash)
      parent_id = links_hash[:id] || Link.root.id

      links_hash.each do |key, value|
        next if key == "id"

        link = Link.find (value[:id])

        link.display_order = key
        link.parent_id = parent_id

        link.save

        change_links value
      end
    end

Does anyone have a clue what''s my mess?

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Hola,

He echo una adaptacion de tu codigo, a mí me funciona:

Mi condicion de categoria principal: (category.parent_id == nil)

Mi partial(_categories.html.erb):

<ul id="categories" style="list-style:none;">
  <% @categories.all(:order => "show_order asc").each do
|category| %>
    <% content_tag_for :li, category do %>
      <span class="handle"><%= image_tag "drag.png"
%></span>
<%= link_to category.name, blog_category_path(@blog.permalink,
category.permalink)%> (<%= category.posts.size%>)
      <ul  class="<%= category.children.size > 0 ? "" :
"blog_category"
%>" style="list-style:none;">
        <% category.children.all(:order => "show_order
asc").each do
|sub_category| %>
          <% content_tag_for :li, sub_category  do %>
            <span class="handle"><%= image_tag
"drag.png"%> </span>
<%= link_to sub_category.name,
blog_category_path(@blog.permalink, sub_category.permalink)%>
(<%= sub_category.posts.size%>)
          <% end %>
        <% end %>
      </ul>
    <% end %>
  <% end %>
</ul>
<%= sortable_element ''categories'', :url =>
sort_blog_categories_path(@blog.permalink),:complete =>
visual_effect(:highlight, ''categories''), :handle =>
"handle", :tree =>
:true, :update => "nav_zone" %>

Mi controlador:

  def sort

    i_sort params[:categories]
    @categories = @blog.categories.root
    render :partial => "categories/categories.html.erb"

  end

  def i_sort(categories_hash )
    parent_id = categories_hash[:id] || nil
    puts categories_hash.to_a.to_s rescue puts categories_hash.to_s
    categories_hash.each do |key, value|
      if key != "id"
        category = Category.find(value[:id].to_i)
        category.show_order = key
        category.parent_id = parent_id
        category.save
        i_sort(value)
      end
    end
  end


Suerte.

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