similar to: Many-to-Many: Where to add the children?

I''ve just been bodyslammed by a problem with has_and_belongs_to_many - as far as I can tell, if it doesn''t appear at the top of other relationship definitions it doesn''t seem to work right. For example: class Artist < ActiveRecord::Base has_and_belongs_to_many :genres has_many :albums has_many :videos has_many :cds has_many :collections end ..works fine

Im writing a module in the lib directory. If I change the module, the changes are not visible to the application when i releod the web page (i am in the development evironment). I must restart the web server (WEBrick) and so i see the changes... but I lost more time. How can I reload the module in the dirictory lib, without reload WEBrick? Thanks so much --Reis -- Posted via

Hi all, happily coding along, but it seems a belongs_to record is not saved. # Create some stuff def create_project @contact = Contact.new @project = Project.new(@params[''project'']) @project_contact = ProjectContact.new(@params[''collect'']) @project.project_contact = @project_contact contact =

I have two objects that are associated in the following way: class Class1 < ApplicationController has_and_belongs_to_many :class2s has_and_belongs_to_many :otherClasses end class Class2 < ApplicationController has_and_belongs_to_many :class1s has_and_bleongs_to_many :otherClasses end Now, when I run the following query, @objects = Class1.find(:all, :conditions

I''m sure I''m not getting something. I have Users, and I have Groups. Each User has_and_belongs_to_many :groups and each Group has_and_belongs_to_many :users. When I add a user, I want to apply a bunch of groups (like tags) to the user (manually, without acts_as_taggable). Here''s User#create: @user = User.new(params[:user]) @user.groups =

This has me scratching my head: a Person has many Things a Person has many Collections a Collection has many Things ...Things in a Collection are ordered ...Things in a Collection can be related to (created by) any User ...a collection has additional attributes, such as a name etc I am confused about habtm in rails (especially when using acts_as_habtm_list) vs. going the :through route.

I have two tables that have a HABTM relationship: Teacher has_and_belongs_to_many Groups, and Group has_and_belongs_to_many Teachers. This is what I want: select a Teacher, and then drag Groups from one box to another to assign them to the teacher. Or, select a group, and drag and drop Teachers to assign them to groups. All using AJAX, (off course). Only problem is, I don''t know

Hi to all, I''m needing some help here ... I want to do an extension on a has_and_belongs_to_many to build a custom add method to the association. i have a table locations that has a many-to-many association with a tags tabel using a locations_tags table. i want to add a method to the Location has_and_belongs_to_many association so that i can do something like this on the location

Good Friday Everyone :-). These are my models: Problem -> has_and_belongs_to_many :tags Tag -> has_and_belongs_to_many :problems Now if a tag does not exist and I create it and associate it to the problem it works self.tags << Tag.create(:name => tag) But if I have the tag already in the DB and just want to link it to another problem it does not really like me. I do it

Is it me or is my model getting the created_at from the wrong model! I have a HABTM relationship between Problems and Tags. In one of my controller I do the following: def view @tag = Tag.find_by_name @params[:id] end In my view I do this: <% @tag.problems.each do |problem| %> ... <%= problem.created_at %> ... <% end %> Now, how come the created_at

I''ve upgraded to mySQL 5.0, and it''s gone pretty smoothly except that on DateTime.now doesn''t seem to return a value that mySQL likes any more, as seen in the following exception: Incorrect datetime value: ''2005-11-20T15:33:12-0800'' for column ''logged_at'' at row 1: UPDATE notes SET `due_on` = ''2005-11-20'',

I have two tables: class PgmUpdate < ActiveRecord::Base has_many :pgm_visits, :foreign_key => ''pgm_update_fk'' ... and class PgmVisit < ActiveRecord::Base belongs_to :pgm_update, :foreign_key => ''pgm_update_fk'', :dependent => true ... According to the has_many docs (http://api.rubyonrails.org/classes/

So i have one table of data, each data object has two owners from the users table. so it''s data table id owner1_id owner2_id --------------------- 5 1 2 10 1 2 owner table id name --------------- 1 bob 2 cornholio so when i pull records from the data table for owner1_id how would i access the name field of owner id 2? -- Posted via

I''m having trouble with a validation that depends on an attribute of a belongs_to parent. If the child is added to an unsaved parent (parent.children << new child), the has_many collection parent.children includes the unsaved child. However the belongs_to attribute child.parent appears to be nil until the parent has been saved. Without access to the parent attributes, the validation

Does anyone know of a good example somewhere of an implemention for adding records with HABTM relations that have lots of possibilities. The best way that I''ve seen it done is where you have two lists (multiple select lists) where you have the possibilities on the left and ones you''ve added on the right with arrows to add and delete items. But the only ways I know how to

Full_Name: Ana Nelson Version: R 2.7.0 GUI 1.24 (5102) OS: OSX 10.5.2 Submission from: (NULL) (213.94.201.89) The R GUI close button has a solid circle. Screenshot is here: http://skitch.com/ananelson/kmxj/r-console On OSX this indicates that there are unsaved changes pending. Please see page 201 of the Apple Human Interface Guidelines (version 2008-03-11):

Hi, I''m using acts_as_ferret in my rails application and I''d like to use more_like_this to retrieve some ''similar'' item suggestions. I have a class ''items'' which has a status field and I need to retrieve items that only have one of the two possible statuses. Looking at the more_like_this method indicates it supports an :append_to_query

Hi, i''m fairly new to ruby on rails, and i know the question at hand may seem simple at first, but i''m getting really caught up in trying to understand this and the docs aren''t giving me answer. i actually thought i knew how the sql commands work (like :include, :conditions, :etc) but obviously, i don''t. there are three models M1, M2, M3 joined by a habtam

hi, can''t find any good tutorial or advice to deal with the creation of a new record and it''s associated objects within the same page. do i have to use ajax just to add custom form fields that will be handled by the controller for associated objects creation.? do i have to use ajax to add associated objects to the unsaved but allready in session parent object? what''s

Class Role has_and_belongs_to_many :users Class User has_and_belongs_to_many :roles Class RolesUsers has_and_belongs_to_many :roles has_and_belongs_to_many :users According to the logs...I''m good through here @roles_users = RolesUsers.find(:all, :conditions => ["user_id = ?", params[:users_id]] ) the next section of controller code is a problem...