similar to: Eager loading and acts_as_tree

I am struggling with how to do eager loading of an acts_as_tree model. If the model Stuff acts_as_tree I know I can do this to get children as well: Stuff.find(:all, :include => :children) But what if the model I am including is the one that acts_as_tree? For example, say Picture belongs_to Category. Category acts_as_tree and I want to get all pictures that are members of a category that

Sigh, I have a new problem every day. Okay I have a model that acts_as_tree, so I am trying to eager load the objects + all of their children, plus their children''s children, and so on. However, :include => :children alone doesn''t do this, and so far I''ve got something like: :include => [{:children => [{:children => [:children, :upload]}, :upload]},

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

Is there a way to eager load children with a model that acts_as_tree? I tried: :include => :children but it gives a mysql error... Thanks, Justin

Dear Railers, I am toying with a new project and have a schema design question. I have a tree-like node structure. Each of the nodes will be associated with a single object. This associated object can be of a variety of types. I represent the tree through a Node class which acts_as_tree. Now imagine three other classes--Animals, Fruits and Vegetables. Each node will have an association

Hi all, I just updated lighttpd from 1.4.8 to 1.4.9 and it now refuses to start with the following error: 2006-01-24 23:12:24: (mod_fastcgi.c.989) execve failed for: public/ dispatch.fcgi No such file or directory 2006-01-24 23:12:24: (mod_fastcgi.c.1015) the fastcgi-backend public/ dispatch.fcgi failed to start: 2006-01-24 23:12:24: (mod_fastcgi.c.1019) child exited with status 2

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, I''m trying to implement a very simple acts_as_tree search in my index html. I am able to show the parents, with no issue, but the children will not show. I have something like this for the parent, which displays fine: <% for group in Group.roots %> <td> <tr> <a href="#" onclick="Effect.BlindDown(''show_<%=

Hello Railslist, I want to draw a simple single-table Acts_as_tree model. I''ve read some articles about it and read the API docs, and now I''ve got this running: in controller I have: --- def index @pages = Page.find(:all) end --- in the model for Page I have ofcourse: --- acts_as_tree :order => "position" --- in the helper I have; --- def

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'',

Man my app is causing me so much grief lately. Okay let''s say I have: class Discussion has_many :posts end class Post belongs_to :discussion acts_as_tree end Then let''s say I grab a discussion object and try to eager load all of its posts: discussion = Discussion.find(:first, :include => [:posts]) Seems simple enough and it grabs an entire tree of posts. However:

Hello people on rails, I am developing a web interface for a database that has hierarchical data. I want the user to be able to browse the tree (~1300 nodes) and activate/deactivate and showing/hiding groups of nodes (like selecting one node selects all the children and the leafs). So I have a tree of objects (ActiveRecord acts_as_tree). Because I need the tree to be persistent and I

Greetings! I am working on a model that utilizes "acts_as_tree". I have a table named ''categories'' that has multiple root items, each each root item has several children. I cannot successfully separate those children from the tree. For example, if I delete a root category, I want the sub categories to become roots. I have tried setting the

i have acts_as_tree installed as plugin under rails 2.0.2 and also its defined in class TreeItems, but when i put this in my view <ul class="tree_level1" id="cars">Furniture <% TreeItem.root.category.children do |cat_children| %> <li><a class="list_item" href="#"><%=h cat_children.name %></a></ li> <%

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

We all know that acts_as_tree gives us ability to set up data in a tree-like structure and use methods like ''parent'', ''children'' and so on. Something I''m completely stuck on. Observe. class Page < ActiveRecord::Base acts_as_tree def before_save raise self.parent.to_yaml end end Well, you''d think that it should show

Hi all, I would like to write some custom helpers like the ones available as form helpers text_field, text_area and the like. My first try was this: custom_helper(obj, meth) ''some_string'' + obj.send(meth) + ''some_other_string'' end Object and method are being passed as symbols like this: custom_helper(:person, :name) and Ruby rightfully complains that

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

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