similar to: Picking Part of Large R Object

I moved from acts_as_tree to acts_as_nested_set because I need the all_children method. I''ve seen an alternative way to add this method to acts_as_tree here: http://www.chuckvose.com/articles/2006/05/24/recursive-children But I''d prefer to use the more efficient way of acts_as_nested_set (and not to have to revert to my old code). Anyway, here''s my issue: if I

Dear R-help I am wondering if somebody wrote some code to convert an adjacency list model into a nested set model. In principal I want to do the same as John Celko mentioned it here with SQL: http://groups.google.co.uk/groups?hl=en&lr=lang_en&selm=8j0n05%24n31%241 %40nnrp1.deja.com Assume you have a tree structure like this Albert / \ /

Hi, I''m trying to get act_as_nested_set working, and I''m puzzled. I googled the following http://codefetch.com/cache?url=http://media.pragprog.com/titles/rails/code/r ails-code.tgz <http://codefetch.com/cache?url=http://media.pragprog.com/titles/rails/code/ rails-code.tgz&path=rails-code/ar/acts_as_nested_set.rb&lang=ruby&qy=ruby>

Hi, has anyone successfully used the acts_as_threaded plugin with postgresql? I''m using rails 1.0 and ruby 1.8.4 on linux. Following the screencast on http://www.railtie.net/articles/2006/02/05/rails-acts_as_threaded-plugin , I got to where we''re ready to create our first post, having made the changes to controllers/posts_controller.rb, views/posts/_form.rhtml,

Is it possible to put conditions relative to the current instance in has_many''s :conditions? For example, in a forum app: class Post < ActiveRecord::Base belongs_to :topic has_many :self_and_descendants, :class_name => "Post", :order => "lft", :conditions => "topic_id = #{topic_id} AND (lft BETWEEN #{lft} AND #{rgt})" end With the

I''m trying to enhance acts_as_nested_set. Well actually I already have, but I''ve done a hack up job of it. I would like to contribute these enhancements back, but I need a little help. I''m a complete newbie to this stuff. The only thing I new before coming into this project was vanilla HTML. So over the course of two weeks I''ve picked up Ruby, Rails, MySQL,

Hello, I am using acts_as_nested_set. My problem is that the columns "lft" and "rgt" get the value 0 if I create a new entity. If I delete an entity I get negative values (-1, -2, -3) - but for all entities. Is there anything missing? Is there any example for "acts_as_nested_set" in the web? -- Posted via http://www.ruby-forum.com/.

- introduce local variables (shortcuts for frequently used <dom>->grant_table) - adjust first parameter of mapcount() - drop lock acquisition from gnttab_get_version() - remove hard tabs and adjust formatting Signed-off-by: Jan Beulich <jbeulich@suse.com> Tested-by: Andrew Thomas <andrew.thomas@oracle.com> --- a/xen/common/grant_table.c +++ b/xen/common/grant_table.c @@

Say I have tasks with a belongs_to association to categories where the later act as a nested set. Now I want to find all tasks belonging to a specific category (given as primary key) or any of its sub-categories. SELECT tasks.*, tasks_category.name FROM categories AS nested_set_categories, tasks LEFT OUTER JOIN categories AS tasks_category ON tasks_category.id = tasks.category_id WHERE

Wondering about using the acts_as_nested for a model but concerned about the performance overhead of having to rewrite the table each time and entry is added or removed(and locking it while it''s happening or risking data integrity probs). Wasn''t really familiar with the structure so did a little reading up on it, and one solution to this seems to spreading the table out, so

hello guys, I have following structure of the table, where I store items of tree: | id | int(11) | NO | PRI | NULL | auto_increment | | user_id | int(11) | YES | | NULL | | | parent_id | int(11) | YES | | NULL | | | lft | int(11) | YES | | NULL | | | rgt | int(11) | YES

Hi Guys, when i upgraded my rails 2.3.4 to 3.0 my betternestedset is not working. It was working fine in the older version. This is my controller def new cat = Category.new cat.text=''test'' cat.save cat.move_to_child_of(Category.find_by_id(1)) #26 redirect_to :action => ''index'' end It gives me this error : "You cannot move a

Hello, All! It is a Piece of my log At the moment of a call: Jan 9 09:50:21 NOTICE[10902]: chan_zap.c:8194 pri_dchannel: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 3 -- Accepting call from '' to '0033444' on channel 1/1, span 1 -- Executing Dial("Zap/1-1", "SIP/3444|60|rgT") in new stack -- Called 3444 -- SIP/3444-0823e6b0 is

The first to members of a grant entry are updated as a combined pair. The following union patch uses a union so updated can happen in an endian neutral fashion. Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com> diff -r 1f611b58729f xen/common/grant_table.c --- a/xen/common/grant_table.c Wed Aug 09 18:53:00 2006 -0400 +++ b/xen/common/grant_table.c Fri Aug 11 12:29:48 2006 -0400 @@ -32,6

Howdy All, I need to change the machine names on about 10 machines ( winxp ) on a samba 3.05/redhat9 network ( NO LDAP ) Am I correct in the order I have listed below to accomplish this 1. remove the machines from the domain ( change to a workgroup ) 2. remove the machines from the smbpasswd file ( I can use webmin for this ) 3. stop samba 4. remove the machines from /etc/passwd 5. add new

Hello! I clear remarks in Makefile: DEBUG_THREADS = -DDEBUG_THREADS -DDETECT_DEADLOCKS But same things in CLI: Aug 30 18:16:31 WARNING[22292]: channel.c:780 channel_find_locked: Avoided initial deadlock for '0x82f2fe0', 9 retries! -- Zap/32-1 is proceeding passing it to Zap/31-1 -- Zap/32-1 is ringing -- Accepting call from '2177' to '7141278' on channel

Howdy People, I have a small problem with my redhat9-samba3.05 setup. I have various shares which have access to them by valid user = @unixgroup Some of the users in any particular group can get access whilst others cant. The curious thing is that this setup worked happily for some months and then, suddenly, it doesn't. I am now forced to list the users indivdually . I am open to ideas .

Howdy All, I have a problem with a machine which I am trying to connect to an existing samba domain 1. The machine WAS connected to the domain as hrennie$ 2. Removed hrennie$ ( using smbpasswd -x hrennie$ ) from the system. 3. Changed the name of the machine to hrenniedt$ ( found that having a user with the same name as the machine is not a good look ) . 4. Tried to reconnect the hrenniedt$ to

Howdy All, My samba server has decided to throw a hissy fit and its quite distressing ( not hair tearing out yet but will be soon ). Samba Version 3.02 To give domain users admin rights to their local machine I have in the past simply made domain users part of the local admin group. Perhaps not the most elegant solution , but it works. I today installed two more machines ( XP sp2 )onto the

Howdy All, My samba server has decided to throw a hissy fit and its quite distressing ( not hair tearing out yet but will be soon ). To give domain users admin rights to their local machine I have in the past simply made domain users part of the local admin group. Perhaps not the most elegant solution , but it works. I today installed two more machines ( XP )onto the network and the machines