Betternestedset talk - Jan 2007 - Output a tree in the view

Hi all,

as a newbie to ROR and user of better nested set, I''m wondering if
someone
has a code snippet to put me in the right way for displaying a partial tree
of a node in the view.

The problem is that I don''t know how up front how many levels my tree
will
have. I''m thinking of the Composite pattern of the GoF for displaying
the
three. But how would you use that pattern with a clean model, view and
controller separtion?

Any suggestions are welcome!

Best regards,

Mark Noten


________________________________________________
Message sent using UebiMiau 2.7.10

Hi Mark,

I''m not sure exactly what you mean, but have you looked at the helper
provided with the plugin?

Krishna
> as a newbie to ROR and user of better nested set, I''m wondering if
someone
> has a code snippet to put me in the right way for displaying a partial tree
> of a node in the view.
>
> The problem is that I don''t know how up front how many levels my
tree will
> have. I''m thinking of the Composite pattern of the GoF for
displaying the
> three. But how would you use that pattern with a clean model, view and
> controller separtion?
>
> Any suggestions are welcome!
>
> Best regards,
>
> Mark Noten
>
>
> ________________________________________________
> Message sent using UebiMiau 2.7.10
>
>
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>

Hi Mark,

Le 5 janv. 07, ? 16:28, Mark.noten a ?crit :
> as a newbie to ROR and user of better nested set, I''m wondering if
> someone
> has a code snippet to put me in the right way for displaying a partial 
> tree
> of a node in the view.
You can use style="margin-left:<%= item.level %>em;" in your
view to
have items indented according to their level.
Displaying vertical lines like in a mail thread is harder...

Jean-Christophe Michel
--
symetrie.com

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

Hi all,

Sorry about my brief explanation. I think a small example will quickly show
what I''m trying to say. To model a sales organization, I''m
using better
nested set with a :scope on the column product_id that is a FK to a products
table. There can be multiple roots that represent top level sales agents for
a certain product and each node is ofcourse a sales agent. 

A sales agent can write multiple contracts and for each contract he gets a
commission on the month he wrote it. A sales agent also gets commission from
his children that wrote contracts.

Enough said, the sales structure like the following

A
| \ \
B C  D
|    |
E    F

Could generate a monthly sales report for sales agent A like the following:

== Own contracts =A 
 Contract 1
 Contract 2

== Contracts children =   B 
    Contract 3
   == Contracts from children =      E
       Contract 5
   D
    Contract 4

For sales agent B the sales report of that month would just be just a part
of the above report:

== Own contracts =B 
 Contract 3
   == Contracts from children =      E Contract 5

I would need a displaying algorithm that would work for any node of the tree
and with a tree of unknown depth.

I apologize if this mail has little or nothing to do with the better nested
set talk. But I think that displaying a tree is as important than creating
the tree itself. 

Thanks for your reply,

Mark

-----Original Message-----
From: Krishna Dole [mailto:dontfall at gmail.com] 
Sent: vrijdag 5 januari 2007 17:11
To: Mark.noten; betternestedset-talk at rubyforge.org
Subject: Re: [Betternestedset-talk] Output a tree in the view

Hi Mark,

I''m not sure exactly what you mean, but have you looked at the helper
provided with the plugin?

Krishna
> as a newbie to ROR and user of better nested set, I''m wondering if
someone
> has a code snippet to put me in the right way for displaying a partial
tree
> of a node in the view.
>
> The problem is that I don''t know how up front how many levels my
tree will
> have. I''m thinking of the Composite pattern of the GoF for
displaying the
> three. But how would you use that pattern with a clean model, view and
> controller separtion?
>
> Any suggestions are welcome!
>
> Best regards,
>
> Mark Noten
>
>
> ________________________________________________
> Message sent using UebiMiau 2.7.10
>
>
> _______________________________________________
> Betternestedset-talk mailing list
> Betternestedset-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>

Hi,

Le 5 janv. 07, ? 22:55, Mark Noten a ?crit :
> Enough said, the sales structure like the following
>
> A
> | \ \
> B C  D
> |    |
> E    F
>
> Could generate a monthly sales report for sales agent A like the 
> following:
>
> == Own contracts => A
>  Contract 1
>  Contract 2
>
> == Contracts children =>    B
>     Contract 3
>    == Contracts from children =>       E
>        Contract 5
>    D
>     Contract 4
>
> For sales agent B the sales report of that month would just be just a 
> part
> of the above report:
>
> == Own contracts => B
>  Contract 3
>    == Contracts from children =>       E Contract 5
>
> I would need a displaying algorithm that would work for any node of 
> the tree
> and with a tree of unknown depth.
Seems that you would need to render :partial => ''contract'',
and
call the same render :partial from inside _contract.rhtml to render sub 
contracts.

Jean-Christophe Michel
--
symetrie.com

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