[Betternestedset-talk] Trouble with tree view

[Noten Mark]

Hi all,

I'm struggling a bit with displaying a subtree with all the child nodes of a 
node. A node in this case is an Agent model extending ActiveRecord::Base and 
using acts_as_nested_set :scope => :product_id.

I would like to generate the below HTML code that displays a tree. The ASCII 
connectors can easily be replaced by icons.

<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap><b>node 1</b></td></tr>
<tr><td>
<table border=0 cellspacing=0 cellpadding=0>
<tr>
<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap>|-</td><td nowrap>node 1.1</td></tr></table>
</tr>
<tr>
<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap>|-</td><td nowrap>node 1.2</td></tr></table>
</tr>
<tr><td>
<table border=0 cellspacing=0 cellpadding=0>
<tr>
<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap>|&nbsp;&nbsp;</td><td nowrap>|-</td><td nowrap>node 
1.2.1</td></tr></table>
</tr>
<tr>
<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap>|&nbsp;&nbsp;</td><td nowrap>\-</td><td nowrap>node 
1.2.2</td></tr></table>
</tr>
</table>
</td></tr>
<tr>
<table border=0 cellspacing=0 cellpadding=0>
<tr><td nowrap>\-</td><td nowrap>node 1.3</td></tr></table>
</tr>
</table>
</td></tr>
<tr><td nowrap>node 2</td></tr>
</table>

I have this method defined in the AgentsHelper module:

  def show_agents_tree(current_agent, child_agents)
    html = "<table class=\"agent-tree\">\n"
    html += "<tr><td nowrap>#{agent_link(current_agent)}</td></tr>\n"
    if !agents.empty?
      html += "<tr><td>\n"    
      html += show_agents_tree(agents.shift, child_agents)
      html += "</td></tr>\n"      
    end
    html += "</table>\n"
  end

It generates HTML code that just displays each agent as a child of the 
previous agent. Can anyone help me to get the right level (O, 1, 2, ...) 
dependent indentation working? Any help is appreciated.

Thanks,

Mark