similar to: RESTful acts_as_tree

So I have the following model class Topic < ActiveRecord::Base belongs_to :topic has_many :topics, :order => :position acts_as_tree :order => :position acts_as_list :scope => :topic_id end that I use for a site''s navigation. Everything (list, create, edit, even the drag&drop sort) works fine, except the destroy function, which the vanilla version def destroy

I am trying to create a record with association. Within the create method, I would also like to pre-populate dependent (has_many) records from a template in the database. The child records are <u>mysteriously rolled back </u> if I insert them in a loop. If I try to insert a single child record, it works.I have read the books and tried to google my way out of this but am at a dead

Guys, I''m having a problem getting acts_as_tree working. It seems from the Agile book (p. 255) that acts_as_tree only supports one-to-one record relations, whereas I need many-to-many support. In other words, looking at the picture at the top of page 256 where where only 1 id is linked to 1 parent_id, I need multiple id''s linked to multiple parent_id''s - for

I just switched from using the standard "id" column into using my own primary key and generating my own unique id for each record. But, this breaks acts_as_tree. Because my new primary key is not an integer, it breaks the SQL query as follows: StatementInvalid in PagesController#create --------------------------------------------------------------------------------------

hello there, i have a model that uses acts_as_tree: >class GbEntry < ActiveRecord::Base > acts_as_tree :order => ''created_at DESC'' >end and i want it to paginate, including all children to avoid unnecessary db queries: > @gb_entry_pages, @gb_entries = > paginate :gb_entries, :per_page => 15, :order => ''created_at DESC'',

Hi, I''m using the latest gem version of rails under MacOS Tiger. I was trying to use acts_as_tree as described in the rails book. So I have something like: class Category < ActiveRecord::Base acts_as_tree :order => "title" end create table categories ( id int not null auto_increment, title

I''m currently using acts_as_tree to display threaded Comments on my forums-like site. It''s waaay too slow to display a page with 1,000 comments, as it''s issuing a TON of selects. I''m pretty sure I want to convert to the nested set model, using acts_as_nested_set or acts_as_threaded. This should give me the performance I''m looking for. The problem,

I am working on an Rails application that uses a pretty complex category structure through out the site. I have defined a table to house all the info and a FK to reference parents within the table CREATE TABLE categories ( id int(11) NOT NULL auto_increment, name varchar(50) NOT NULL, parent_id int(11) default NULL, constraint fk_category_id foreign key (category_id) references

Hi, If I have a db table categories - id - name - parent_id - position is it alright to have the Category model act_as_tree and for each level act_as_list? class Category < ActiveRecord::Base acts_as_tree :order => :position acts_as_list :scope => :parent_id end Thanks, Peter

Hello, I''m trying to create categories that have their own subcategories, and each subcategory may have its own subcategories, .. and so on. After some reading, I found out that the best way for creating such a thing is to use acts_as_tree, but I didn''t find any tutorial or article that explain this in a clear way. After a lot of work I was finally able to create categories and

Hi there, the acts_as_tree API says that I can set a counter cache and that it will automatically increment the "children_count" column. I did that but when I create a new page it asks for a "pages_count" column instead. Here is the relevant part of page.rb model: class Page < ActiveRecord::Base acts_as_tree :order => :position, :counter_cache => true

Hello all, I''m having trouble using acts_as_list with acts_as_tree to order the "children". I''ve found a few old posts on the web that seem to indicate that this once worked. class Whatever < ActiveRecord::Base acts_as_tree :order => :position acts_as_list :scope => :parent_id Although the ''position'' field is being populated, it appears

I''ve got an acts_as_tree structure which I want to be able to represent in the URL, with one field identified as the url component. In other words, if I''ve got this: def self.up create_table :nodes do |t| t.column :parent_id, :integer t.column :tag, :string end end and class Node < ActiveRecord::Base acts_as_tree end and what I want the urls to be is something

So I have a model that acts_as_tree and I run a method on a collection of all of these records. This method walks the tree and fetches the parent/children, etc. This results in many, many duplicate SQL queries to be executed. Is there a way to eagerly load all of these models? Something along the lines of: Model.find(:all, :include => [:children, :parent]) If I execute the above statement, I

my application is using acts_as_tree to create a directed graph. Everyone would work fine, except that nothing prevents the user to create a circular reference: >> item.parent=child >> item.save => true >> child.parent=item >> child.save => true I checked in the database, and there it is: an item that has as parent its own child! item.parent_id = child_id I

i have a model called certification_types that i''ve declared as acts_as_tree. I have a model called certification that belongs_to :certification_type . class CertificationController < ApplicationController ..... def summary_list @certifications = Certification.find(:all, :order=>''date'') end end summary_list.rhtml <% for certification in

Hi List, I''m new to and hot on RoR. And I have a question regarding acts_as_tree and counter_cache. What methods actually update the counter_cache column? I''ve only really started the app so i''ve just got it set up so that I can select the parent node (from a list of nodes that exclude all descendants of the current node) with a radio buttoned list named and valued

Hi, this is my first post here, my name is Lucas and I''m just starting with rails. For one of the first models I made (an accounts plan), I had some example data in a CSV file, so I created this migration, the idea is to detect the parent/child relationships according to the account number, the code works right (if I insert some puts here and there, I can see it), but when the migration

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

hi, I''ve a normal Category model implemented with acts_as_tree (name, parent_id) that has_many :products (name, category_id). What I''m asking for is a method to fetch every product that belongs fall into a particular category and its children, eg: if I''m asking for a root node (/category/show/1) I need to display every product that have category_id = 1 AND every product