From jonas at fkw.se  Wed May  2 16:24:10 2007
From: jonas at fkw.se (jonas)
Date: Wed, 2 May 2007 22:24:10 +0200
Subject: [Betternestedset-talk] Keep getting the MYSQL-error
Message-ID: <e477d6c323a44639a9139ac9d2528e78@s36.dknet.se>

I?ve been working on a site tree with multiple roots for a while now. I just can?t figure out this error (that previously was mentioned here):

Mysql::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? ? "site_id IS NULL" : "site_id = #{site_id}")' at line 1: SELECT max(rgt) AS max_rgt FROM nodes WHERE (site_id.nil? ? "site_id IS NULL" : "site_id = #{site_id}")
My apps models:

class Node < ActiveRecord::Base
    belongs_to :site
    acts_as_nested_set :scope => :site
end

class Site < ActiveRecord::Base
    has_many :nodes, :dependent => :delete_all
end

Columns in database:
  create_table "nodes", :force => true do |t|
    t.column "name",            :string
    t.column "parent_id",       :integer
    t.column "lft",             :integer
    t.column "rgt",             :integer
    t.column "site_id",         :integer
  end

What am I doing wrong?

Best regards
Jonas

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://rubyforge.org/pipermail/betternestedset-talk/attachments/20070502/08d1d76b/attachment.html 

From dontfall at gmail.com  Thu May  3 10:12:48 2007
From: dontfall at gmail.com (Krishna Dole)
Date: Thu, 3 May 2007 10:12:48 -0400
Subject: [Betternestedset-talk] Keep getting the MYSQL-error
In-Reply-To: <e477d6c323a44639a9139ac9d2528e78@s36.dknet.se>
References: <e477d6c323a44639a9139ac9d2528e78@s36.dknet.se>
Message-ID: <8d64b97d0705030712v7b1fb889wd5ecd0cf235af22@mail.gmail.com>

Hi Jonas,

Do all the tests run successfully for you?

Krishna

On 5/2/07, jonas <jonas at fkw.se> wrote:
> I?ve been working on a site tree with multiple roots for a while now. I just
> can?t figure out this error (that previously was mentioned here):
>
> Mysql::Error: You have an error in your SQL syntax; check the manual that
> corresponds to your MySQL server version for the right syntax to use near '?
> ? "site_id IS NULL" : "site_id = #{site_id}")' at line 1: SELECT max(rgt) AS
> max_rgt FROM nodes WHERE (site_id.nil? ? "site_id IS NULL" : "site_id =
> #{site_id}")
>
> My apps models:
>
> class Node < ActiveRecord::Base
>     belongs_to :site
>     acts_as_nested_set :scope => :site
> end
>
> class Site < ActiveRecord::Base
>     has_many :nodes, :dependent => :delete_all
> end
>
> Columns in database:
>   create_table "nodes", :force => true do |t|
>     t.column "name",            :string
>     t.column "parent_id",       :integer
>     t.column "lft",             :integer
>     t.column "rgt",             :integer
>     t.column "site_id",         :integer
>   end
>
> What am I doing wrong?
>
>
> Best regards
> Jonas
>
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>
>

From jonas at fkw.se  Thu May  3 17:25:22 2007
From: jonas at fkw.se (jonas)
Date: Thu, 3 May 2007 23:25:22 +0200
Subject: [Betternestedset-talk] =?iso-8859-1?q?Don=B4t_bother=2E=2E=2E?=
Message-ID: <c80dc9c21cbb4d06b6b48a1c0bcedc3e@s36.dknet.se>

Don?t bother. I had just forgotten to update my source. I?ve solved it and thank you for taking time. This plugin rocks!

Kind Regards
Jonas

----------------------------------------
Fr?n: "Mark.noten" <mark.noten at itfc.be>
Skickat: den 3 maj 2007 11:22
Till: jonas at fkw.se
?mne: SPAM-LOW:  Re: [Betternestedset-talk] Keep getting the MYSQL-error 

Hi Jonas,

I'm not an expert in this but it looks like a part of your query building
method is badly escaped. 

 ? ? "site_id IS NULL" : "site_id = #{site_id}")

Looks like you're trying to do something like below. It's a shorted version
of the "if" syntax.

site_id.nil? "site_id IS NULL" : "site_id = #{site_id}"

Kind regards,

Mark Noten
Zaakvoerder ITFC gcv
E-mail: mark.noten at itfc.be
GSM: 0484/698333

--------- Original Message --------
From: jonas at fkw.se
To: betternestedset-talk at rubyforge.org 
Subject: [Betternestedset-talk] Keep getting the MYSQL-error
Date: 02/05/07 23:40

> I?ve been working on a site tree with multiple roots for a while now. I
just can?t figure out this error (that previously was mentioned
here):Mysql::Error: You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the right syntax to use
near '? ? "site_id IS NULL" : "site_id = #{site_id}")' at line 1: SELECT
max(rgt) AS max_rgt FROM nodes WHERE (site_id.nil? ? "site_id IS NULL" :
"site_id = #{site_id}")My apps models:class Node <
ActiveRecord::Base    belongs_to :site   
acts_as_nested_set :scope => :siteendclass Site <
ActiveRecord::Base    has_many :nodes, :dependent =>
:delete_allendColumns in database:  create_table "nodes", :force =>
true do |t|    t.column
"name",           
:string    t.column
"parent_id",       :integer   
t.column
"lft",            
:integer    t.column
"rgt",            
:integer    t.column
"site_id",         :integer 
endWhat am I doing wrong?Best regardsJonas
> 
> 
> 
> 
> 
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk
> 

________________________________________________
Message sent using UebiMiau 2.7.10


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://rubyforge.org/pipermail/betternestedset-talk/attachments/20070503/f2fd5992/attachment.html 

From masterkain at gmail.com  Mon May  7 09:44:13 2007
From: masterkain at gmail.com (Claudio Poli)
Date: Mon, 7 May 2007 15:44:13 +0200
Subject: [Betternestedset-talk] example controller and one question
Message-ID: <51263840-13D4-4D50-AC8E-4246D7188D1D@gmail.com>

hi there,
I started using better nested set, however there are things that  
aren't too clear for me.
I'm in the process of building a small interface to manage a simple  
Category model that can have multiple roots.
I've tried to scope them but I got strange errors, is there anybody  
that can provide a sample controller to manage categories?
Also, I need to display the whole Category tree, I've tried to look  
at full_set and helper, but I really can't find an answer.

Thanks in advance for any hints.

From mark.noten at itfc.be  Thu May 24 17:12:29 2007
From: mark.noten at itfc.be (Noten Mark)
Date: Thu, 24 May 2007 23:12:29 +0200
Subject: [Betternestedset-talk] Trouble with tree view
Message-ID: <200705242312.29611.mark.noten@itfc.be>

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

From mark.noten at itfc.be  Fri May 25 04:12:31 2007
From: mark.noten at itfc.be (Mark.noten)
Date: Fri, 25 May 2007 10:12:31 +0200
Subject: [Betternestedset-talk] Trouble with tree view
Message-ID: <ef0f58e0286d99a341f78715e3d2da0d@217.66.0.26>

Some extra information:

manager.all_children = child_agents

And agents.shift should be child_agents.shift

Kind regards,

Mark
--------- Original Message --------
From: betternestedset-talk at rubyforge.org
To: betternestedset-talk at rubyforge.org <betternestedset-talk at rubyforge.org>
Subject: [Betternestedset-talk] Trouble with tree view
Date: 25/05/07 00:23

> 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 =&gt; :product_id.
> 
> I would like to generate the below HTML code that displays a tree. The
ASCII 
> connectors can easily be replaced by icons.
> 
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;&lt;b&gt;node 1&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
> &lt;tr&gt;&lt;td&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
1.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> &lt;/tr&gt;
> &lt;tr&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
1.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> &lt;/tr&gt;
> &lt;tr&gt;&lt;td&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node 
> 1.2.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> &lt;/tr&gt;
> &lt;tr&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node 
> 1.2.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> &lt;/tr&gt;
> &lt;/table&gt;
> &lt;/td&gt;&lt;/tr&gt;
> &lt;tr&gt;
> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> &lt;tr&gt;&lt;td nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
1.3&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> &lt;/tr&gt;
> &lt;/table&gt;
> &lt;/td&gt;&lt;/tr&gt;
> &lt;tr&gt;&lt;td nowrap&gt;node 2&lt;/td&gt;&lt;/tr&gt;
> &lt;/table&gt;
> 
> I have this method defined in the AgentsHelper module:
> 
>   def show_agents_tree(current_agent, child_agents)
>     html = &quot;&lt;table class=&quot;agent-tree&quot;&gt;n&quot;
>     html += &quot;&lt;tr&gt;&lt;td
nowrap&gt;#{agent_link(current_agent)}&lt;/td&gt;&lt;/tr&gt;n&quot;
>     if !agents.empty?
>       html += &quot;&lt;tr&gt;&lt;td&gt;n&quot;    
>       html += show_agents_tree(agents.shift, child_agents)
>       html += &quot;&lt;/td&gt;&lt;/tr&gt;n&quot;      
>     end
>     html += &quot;&lt;/table&gt;n&quot;
>   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
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk
> 
> 

________________________________________________
Message sent using UebiMiau 2.7.10



From mark.noten at itfc.be  Sun May 27 14:05:11 2007
From: mark.noten at itfc.be (Noten Mark)
Date: Sun, 27 May 2007 20:05:11 +0200
Subject: [Betternestedset-talk] Trouble with tree view
In-Reply-To: <ef0f58e0286d99a341f78715e3d2da0d@217.66.0.26>
References: <ef0f58e0286d99a341f78715e3d2da0d@217.66.0.26>
Message-ID: <200705272005.11950.mark.noten@itfc.be>

Hi all,

after some extensive searching I found an recursive algorithm to dislay a tree 
structure on http://snippets.dzone.com/posts/show/1919. I modified it only 
slightly and I thought I would share the code with you.

In application_helper.rb:

 def display_tree_recursive(tree, parent_id)
    ret = "<ul>\n"
    tree.each do |node|
      if node.parent_id == parent_id
        ret += "\t<li>"
        ret += yield node
        ret += display_tree_recursive(tree, node.id) { |n| yield n } if 
node.all_children_count > 0
        ret += "</li>\n"
      end
    end
    ret += "</ul>\n"
  end

You can call it in the view show.rhtml with @tree = node.full_set and 
@parent_id = node.parent_id where node = BNSModel.find(params[:id]) set in 
the show action:

<%= display_tree_recursive(@tree, @parent_id) {|node| node.name}  %>
 (Actually I use another helper method to avoid the code block in the view).

With the "if node.all_children_count > 0" statement, no extra query is needed 
to determine if the node has any children. ;-)

With some CSS magic (wrap it with <div id="tree"> and defining layouts for 
<ul> and <li>) you can get a really nice looking tree. Maybe someone has an 
example.

Kind regards,

Mark

On Friday 25 May 2007 10:12, Mark.noten wrote:
> Some extra information:
>
> manager.all_children = child_agents
>
> And agents.shift should be child_agents.shift
>
> Kind regards,
>
> Mark
> --------- Original Message --------
> From: betternestedset-talk at rubyforge.org
> To: betternestedset-talk at rubyforge.org <betternestedset-talk at rubyforge.org>
> Subject: [Betternestedset-talk] Trouble with tree view
> Date: 25/05/07 00:23
>
> > 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 =&gt; :product_id.
> >
> > I would like to generate the below HTML code that displays a tree. The
>
> ASCII
>
> > connectors can easily be replaced by icons.
> >
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;&lt;b&gt;node
> > 1&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>
> 1.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>
> > &lt;/tr&gt;
> > &lt;tr&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>
> 1.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>
> > &lt;/tr&gt;
> > &lt;tr&gt;&lt;td&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
>
> nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>
> > 1.2.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> > &lt;/tr&gt;
> > &lt;tr&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
>
> nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
>
> > 1.2.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> > &lt;/tr&gt;
> > &lt;/table&gt;
> > &lt;/td&gt;&lt;/tr&gt;
> > &lt;tr&gt;
> > &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
>
> 1.3&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>
> > &lt;/tr&gt;
> > &lt;/table&gt;
> > &lt;/td&gt;&lt;/tr&gt;
> > &lt;tr&gt;&lt;td nowrap&gt;node 2&lt;/td&gt;&lt;/tr&gt;
> > &lt;/table&gt;
> >
> > I have this method defined in the AgentsHelper module:
> >
> >   def show_agents_tree(current_agent, child_agents)
> >     html = &quot;&lt;table class=&quot;agent-tree&quot;&gt;n&quot;
> >     html += &quot;&lt;tr&gt;&lt;td
>
> nowrap&gt;#{agent_link(current_agent)}&lt;/td&gt;&lt;/tr&gt;n&quot;
>
> >     if !agents.empty?
> >       html += &quot;&lt;tr&gt;&lt;td&gt;n&quot;
> >       html += show_agents_tree(agents.shift, child_agents)
> >       html += &quot;&lt;/td&gt;&lt;/tr&gt;n&quot;
> >     end
> >     html += &quot;&lt;/table&gt;n&quot;
> >   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
> > _______________________________________________
> > Betternestedset-talk mailing list
> > Betternestedset-talk at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/betternestedset-talk
>
> ________________________________________________
> Message sent using UebiMiau 2.7.10
>
>
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk

-- 
Met vriendelijke groet,

Mark Noten
Software engineer
ITFC gcv
Email: mark.noten at itfc.be
GSM: +32 (484) 698 333

From masterkain at gmail.com  Mon May 28 08:54:59 2007
From: masterkain at gmail.com (Claudio Poli)
Date: Mon, 28 May 2007 14:54:59 +0200
Subject: [Betternestedset-talk] Trouble with tree view
In-Reply-To: <200705272005.11950.mark.noten@itfc.be>
References: <ef0f58e0286d99a341f78715e3d2da0d@217.66.0.26>
	<200705272005.11950.mark.noten@itfc.be>
Message-ID: <47E4309B-D326-4C20-937E-E44131C65179@gmail.com>

hi Mark,
thanks for sharing this useful piece of code.
does you or somebody have a hint for this problem?

- root1
-- subcategory
-- subcategory
- root2
-- subcategory
-- subcategory
--- subcategory

ie. what's the usual setup to have multiple roots and to display them  
in a view, maybe ordered in some ways?

currently I'm using
<% for root in @categories %>
	<ul>
	<% for node in root.full_set %>
		<li><%= '-' * node.level %> <%= link_to node.name, category_path 
(node) %></li>
	<% end %>
	</ul>
<% end %>

with

@categories = Category.roots

thanks.

Il giorno 27/mag/07, alle ore 20:05, Noten Mark ha scritto:

> Hi all,
>
> after some extensive searching I found an recursive algorithm to  
> dislay a tree
> structure on http://snippets.dzone.com/posts/show/1919. I modified  
> it only
> slightly and I thought I would share the code with you.
>
> In application_helper.rb:
>
>  def display_tree_recursive(tree, parent_id)
>     ret = "<ul>\n"
>     tree.each do |node|
>       if node.parent_id == parent_id
>         ret += "\t<li>"
>         ret += yield node
>         ret += display_tree_recursive(tree, node.id) { |n| yield  
> n } if
> node.all_children_count > 0
>         ret += "</li>\n"
>       end
>     end
>     ret += "</ul>\n"
>   end
>
> You can call it in the view show.rhtml with @tree = node.full_set and
> @parent_id = node.parent_id where node = BNSModel.find(params[:id])  
> set in
> the show action:
>
> <%= display_tree_recursive(@tree, @parent_id) {|node| node.name}  %>
>  (Actually I use another helper method to avoid the code block in  
> the view).
>
> With the "if node.all_children_count > 0" statement, no extra query  
> is needed
> to determine if the node has any children. ;-)
>
> With some CSS magic (wrap it with <div id="tree"> and defining  
> layouts for
> <ul> and <li>) you can get a really nice looking tree. Maybe  
> someone has an
> example.
>
> Kind regards,
>
> Mark
>
> On Friday 25 May 2007 10:12, Mark.noten wrote:
>> Some extra information:
>>
>> manager.all_children = child_agents
>>
>> And agents.shift should be child_agents.shift
>>
>> Kind regards,
>>
>> Mark
>> --------- Original Message --------
>> From: betternestedset-talk at rubyforge.org
>> To: betternestedset-talk at rubyforge.org <betternestedset- 
>> talk at rubyforge.org>
>> Subject: [Betternestedset-talk] Trouble with tree view
>> Date: 25/05/07 00:23
>>
>>> 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 =&gt; :product_id.
>>>
>>> I would like to generate the below HTML code that displays a  
>>> tree. The
>>
>> ASCII
>>
>>> connectors can easily be replaced by icons.
>>>
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;&lt;b&gt;node
>>> 1&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>>
>> 1.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>>
>>> &lt;/tr&gt;
>>> &lt;tr&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>>
>> 1.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>>
>>> &lt;/tr&gt;
>>> &lt;tr&gt;&lt;td&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
>>
>> nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
>>
>>> 1.2.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>>> &lt;/tr&gt;
>>> &lt;tr&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
>>
>> nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
>>
>>> 1.2.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>>> &lt;/tr&gt;
>>> &lt;/table&gt;
>>> &lt;/td&gt;&lt;/tr&gt;
>>> &lt;tr&gt;
>>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
>>
>> 1.3&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
>>
>>> &lt;/tr&gt;
>>> &lt;/table&gt;
>>> &lt;/td&gt;&lt;/tr&gt;
>>> &lt;tr&gt;&lt;td nowrap&gt;node 2&lt;/td&gt;&lt;/tr&gt;
>>> &lt;/table&gt;
>>>
>>> I have this method defined in the AgentsHelper module:
>>>
>>>   def show_agents_tree(current_agent, child_agents)
>>>     html = &quot;&lt;table class=&quot;agent-tree&quot;&gt;n&quot;
>>>     html += &quot;&lt;tr&gt;&lt;td
>>
>> nowrap&gt;#{agent_link(current_agent)}&lt;/td&gt;&lt;/tr&gt;n&quot;
>>
>>>     if !agents.empty?
>>>       html += &quot;&lt;tr&gt;&lt;td&gt;n&quot;
>>>       html += show_agents_tree(agents.shift, child_agents)
>>>       html += &quot;&lt;/td&gt;&lt;/tr&gt;n&quot;
>>>     end
>>>     html += &quot;&lt;/table&gt;n&quot;
>>>   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
>>> _______________________________________________
>>> Betternestedset-talk mailing list
>>> Betternestedset-talk at rubyforge.org
>>> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>>
>> ________________________________________________
>> Message sent using UebiMiau 2.7.10
>>
>>
>> _______________________________________________
>> Betternestedset-talk mailing list
>> Betternestedset-talk at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>
> -- 
> Met vriendelijke groet,
>
> Mark Noten
> Software engineer
> ITFC gcv
> Email: mark.noten at itfc.be
> GSM: +32 (484) 698 333
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk


From mark.noten at itfc.be  Mon May 28 13:24:38 2007
From: mark.noten at itfc.be (Noten Mark)
Date: Mon, 28 May 2007 19:24:38 +0200
Subject: [Betternestedset-talk] Trouble with tree view
In-Reply-To: <47E4309B-D326-4C20-937E-E44131C65179@gmail.com>
References: <ef0f58e0286d99a341f78715e3d2da0d@217.66.0.26>
	<200705272005.11950.mark.noten@itfc.be>
	<47E4309B-D326-4C20-937E-E44131C65179@gmail.com>
Message-ID: <200705281924.38713.mark.noten@itfc.be>

Hi Claudio,

if you look at the bottom of this link 
http://snippets.dzone.com/posts/show/1919 then you'll find what you need. You 
can use the display_tree_recursive function that I posted in your view like 
this:

<%= display_tree_recursive(@tree, nil) %>

In the action of your controller just put something like:

@tree = Category.find(:all, :order => 'product_id, lft')

If have multiple roots with :scope => :product_id so the above statement sorts 
each tree by product_id (1, 2, ...) and then each tree is sorted with the 
root first, then it's children from left to right, ... (like normally when 
working with better nested set).

I'm sure other people have a better solution because this one generaties quite 
some calls to the display_tree_recursive function. Claudio, you also better 
but your code in an helper method to keep a clean view.

Kind regards,

Mark

On Monday 28 May 2007 14:54, Claudio Poli wrote:
> hi Mark,
> thanks for sharing this useful piece of code.
> does you or somebody have a hint for this problem?
>
> - root1
> -- subcategory
> -- subcategory
> - root2
> -- subcategory
> -- subcategory
> --- subcategory
>
> ie. what's the usual setup to have multiple roots and to display them
> in a view, maybe ordered in some ways?
>
> currently I'm using
> <% for root in @categories %>
> 	<ul>
> 	<% for node in root.full_set %>
> 		<li><%= '-' * node.level %> <%= link_to node.name, category_path
> (node) %></li>
> 	<% end %>
> 	</ul>
> <% end %>
>
> with
>
> @categories = Category.roots
>
> thanks.
>
> Il giorno 27/mag/07, alle ore 20:05, Noten Mark ha scritto:
> > Hi all,
> >
> > after some extensive searching I found an recursive algorithm to
> > dislay a tree
> > structure on http://snippets.dzone.com/posts/show/1919. I modified
> > it only
> > slightly and I thought I would share the code with you.
> >
> > In application_helper.rb:
> >
> >  def display_tree_recursive(tree, parent_id)
> >     ret = "<ul>\n"
> >     tree.each do |node|
> >       if node.parent_id == parent_id
> >         ret += "\t<li>"
> >         ret += yield node
> >         ret += display_tree_recursive(tree, node.id) { |n| yield
> > n } if
> > node.all_children_count > 0
> >         ret += "</li>\n"
> >       end
> >     end
> >     ret += "</ul>\n"
> >   end
> >
> > You can call it in the view show.rhtml with @tree = node.full_set and
> > @parent_id = node.parent_id where node = BNSModel.find(params[:id])
> > set in
> > the show action:
> >
> > <%= display_tree_recursive(@tree, @parent_id) {|node| node.name}  %>
> >  (Actually I use another helper method to avoid the code block in
> > the view).
> >
> > With the "if node.all_children_count > 0" statement, no extra query
> > is needed
> > to determine if the node has any children. ;-)
> >
> > With some CSS magic (wrap it with <div id="tree"> and defining
> > layouts for
> > <ul> and <li>) you can get a really nice looking tree. Maybe
> > someone has an
> > example.
> >
> > Kind regards,
> >
> > Mark
> >
> > On Friday 25 May 2007 10:12, Mark.noten wrote:
> >> Some extra information:
> >>
> >> manager.all_children = child_agents
> >>
> >> And agents.shift should be child_agents.shift
> >>
> >> Kind regards,
> >>
> >> Mark
> >> --------- Original Message --------
> >> From: betternestedset-talk at rubyforge.org
> >> To: betternestedset-talk at rubyforge.org <betternestedset-
> >> talk at rubyforge.org>
> >> Subject: [Betternestedset-talk] Trouble with tree view
> >> Date: 25/05/07 00:23
> >>
> >>> 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 =&gt; :product_id.
> >>>
> >>> I would like to generate the below HTML code that displays a
> >>> tree. The
> >>
> >> ASCII
> >>
> >>> connectors can easily be replaced by icons.
> >>>
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;&lt;b&gt;node
> >>> 1&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
> >>
> >> 1.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> >>
> >>> &lt;/tr&gt;
> >>> &lt;tr&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
> >>
> >> 1.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> >>
> >>> &lt;/tr&gt;
> >>> &lt;tr&gt;&lt;td&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
> >>
> >> nowrap&gt;|-&lt;/td&gt;&lt;td nowrap&gt;node
> >>
> >>> 1.2.1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> >>> &lt;/tr&gt;
> >>> &lt;tr&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;|&amp;nbsp;&amp;nbsp;&lt;/td&gt;&lt;td
> >>
> >> nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
> >>
> >>> 1.2.2&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> >>> &lt;/tr&gt;
> >>> &lt;/table&gt;
> >>> &lt;/td&gt;&lt;/tr&gt;
> >>> &lt;tr&gt;
> >>> &lt;table border=0 cellspacing=0 cellpadding=0&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;-&lt;/td&gt;&lt;td nowrap&gt;node
> >>
> >> 1.3&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
> >>
> >>> &lt;/tr&gt;
> >>> &lt;/table&gt;
> >>> &lt;/td&gt;&lt;/tr&gt;
> >>> &lt;tr&gt;&lt;td nowrap&gt;node 2&lt;/td&gt;&lt;/tr&gt;
> >>> &lt;/table&gt;
> >>>
> >>> I have this method defined in the AgentsHelper module:
> >>>
> >>>   def show_agents_tree(current_agent, child_agents)
> >>>     html = &quot;&lt;table class=&quot;agent-tree&quot;&gt;n&quot;
> >>>     html += &quot;&lt;tr&gt;&lt;td
> >>
> >> nowrap&gt;#{agent_link(current_agent)}&lt;/td&gt;&lt;/tr&gt;n&quot;
> >>
> >>>     if !agents.empty?
> >>>       html += &quot;&lt;tr&gt;&lt;td&gt;n&quot;
> >>>       html += show_agents_tree(agents.shift, child_agents)
> >>>       html += &quot;&lt;/td&gt;&lt;/tr&gt;n&quot;
> >>>     end
> >>>     html += &quot;&lt;/table&gt;n&quot;
> >>>   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
> >>> _______________________________________________
> >>> Betternestedset-talk mailing list
> >>> Betternestedset-talk at rubyforge.org
> >>> http://rubyforge.org/mailman/listinfo/betternestedset-talk
> >>
> >> ________________________________________________
> >> Message sent using UebiMiau 2.7.10
> >>
> >>
> >> _______________________________________________
> >> Betternestedset-talk mailing list
> >> Betternestedset-talk at rubyforge.org
> >> http://rubyforge.org/mailman/listinfo/betternestedset-talk
> >
> > --
> > Met vriendelijke groet,
> >
> > Mark Noten
> > Software engineer
> > ITFC gcv
> > Email: mark.noten at itfc.be
> > GSM: +32 (484) 698 333
> > _______________________________________________
> > Betternestedset-talk mailing list
> > Betternestedset-talk at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/betternestedset-talk
>
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk

-- 
Met vriendelijke groet,

Mark Noten
Software engineer
ITFC gcv
Email: mark.noten at itfc.be
GSM: +32 (484) 698 333

From jc.michel at symetrie.com  Mon May 28 17:50:20 2007
From: jc.michel at symetrie.com (Jean-Christophe Michel)
Date: Mon, 28 May 2007 23:50:20 +0200
Subject: [Betternestedset-talk] Trouble with tree view
In-Reply-To: <200705242312.29611.mark.noten@itfc.be>
References: <200705242312.29611.mark.noten@itfc.be>
Message-ID: <BDAA7CAB-65DE-4527-A23E-48A3F15164CF@symetrie.com>

Hi,

Le 24 mai 07 ? 23:12, Noten Mark a ?crit :
> 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 just posted on
http://opensource.symetrie.com/trac/better_nested_set/wiki/RecursiveMenu

an example of a helper I use to display a dynamic menu with selected  
path developped
(only the hierarchies in the selected path are open). Hope it will  
help with your question.

Jean-Christophe Michel
--
symetrie.com

Better Nested Set for rails:
http://opensource.symetrie.com/trac/better_nested_set