similar to: habtm relation and dependent => :destroy

If Product and Category models are in a habtm relationship, i.e. class Product < ActiveRecord::Base has_and_belongs_to_many :categories end class Category < ActiveRecord::Base has_and_belongs_to_many :products end I want a piece of code to be executed every time a product is connected to a category. Where do I put this code? Which callback (and on which model) will be triggered? Any

If I have a HABTM relationship between two models (places, pictures), can I delete the record from the join table without also destroying the objects? IE: 1. @places.pictures << @picture 2. @places.pictures.find( @picture.id ).destroy I''d want line #2 (...or something similar unless I''m way off) to destroy the record in pictures_places only, and not anything from the

In console I can set image = Image.find(id) and then do image.destroy and it works fine. It even cleans up the HABTM relationships thanks to a before_destroy method. The problem is though that when I try and do the same thing in my web browser, either in my view or via the URL scheme of /controller/destroy/id it gives me a "stack level too deep" error. Anybody know why it would work

Hi, There is something I don''t understand about :dependent => :destroy. I hope someone can help me. Consider this code: class Folder < ActiveRecord::Base has_many :myfiles has_many :folders has_many :group_folders, :dependent => :destroy validates_uniqueness_of :name, :scope => "folder_id" validates_presence_of :name before_destroy

Ok, so I have two models that HABTM each other. Companies UserAccounts When creating a new user account, this works: @company.user_accounts << @user This works with or without a subsequent save of @company. And the association is set properly but this does nothing (fails silently): @user.companies << @company This fails both when I do and don''t save @user afterwards.

Hi all I have members in my application, and every member can assign other members as buddies. class Member < ActiveRecord::Base # Hat folgende Buddies has_and_belongs_to_many :buddies, :class_name => ''Member'', :join_table => ''members_have_buddies'',

Hi all I have a DiscJockey and a Member model, each of them reference each other using habtm. josh $ script/server >> m=Member.find 1 >> dj=DiscJockey.find 1 >> m.disc_jockeys << dj >> m.disc_jockeys << dj >> m.disc_jockeys << dj Now I have 3 relations in the DB! Is this normal? Shouldn''t there an error occur, that I can only add the

Hi converted two of my models to HABTM today but I am having a real hard time getting my unit tests to pass now. Specifically, when I destroy a record I get this error: ...many many lines of this above... (eval):4:in `destroy_without_habtm_shim_for_categories'' (eval):4:in `destroy_without_habtm_shim_for_categories'' (eval):4:in

Hello all, I have the following models: class Sku < ActiveRecord::Base has_and_belongs_to_many :options end class Option < ActiveRecord::Base has_and_belongs_to_many :skus end By default if I destroy an Option any relationships between Options and Skus will be removed as well. But, I want to prevent an Option from being destroyed when it is associated with a Sku in the options_skus

hey all, I have three tables like this: forum (id,title) usergroup(id,title) forum_perms(usergroup_id,forum_id,read,write,post) is there a way to deal with that kind of relation with rails such as by using has_and_belongs_to_many kind of stuff? thanx in advance Pat --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups

So I''ve got an ActiveRecord model pointing to a MySQL db, with an auto-serialized column ("serialize :columnName"). Thing is, MySQL, depending on how it''s configured (like, by default), has a bad habit of just truncating your data if it''s too wide for the column, with no error raised. Yeah, I can probably reconfigure MySQL and/or my AR connection to it. But

I have the following in a model class: class Game < ActiveRecord::Base has_many :player_stats has_many :players, :through => :player_stats def visitor_stats stats = [] player_stats.each do |stat| stats << stat if stat.player.team.team_code == self.visiting_team_code end stats end def home_stats stats = [] player_stats.each do |stat| stats << stat if

Hi, I have three Models: User, Group and File. User habtm groups and Group habtm Files How can I find all files that a particular user has access to? eg user.groups.files ? As user.groups returns an array, the above doesn''t work. Id like to find the files for all groups in that array, without adding any code to the User model. Thanks in advance PS I just posted this in the

hi new to rails ... wat does it means... uninitialized constant BooksController::Books /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:102:in `const_missing'' app/controllers/books_controller.rb:5:in `index'' -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are

Imagine I want to track people, and the clubs that they belong to. table people with columns person_id, person_name table clubs with columns club_id, club_name And I have the association table: table clubs_people with columns person_id, club_id Now I know how to do this habtm between the two, in order to associate people with clubs that they belong to. However my application also needs a

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

Hi all, I''m trying to model self-referential relations between people, where the relation has attached data. John ''works for'' Bob Problem: '':through'' doesn''t work, and generates a NameError. => the models : Person (attr: name) Relation (attr: source_id, target_id) (more details below) ex: John ''works

Hi, I ve defined the following relation in one of my models with a dynamic where condition: has_one :selection, :foreign_key => ''object_id'', :conditions => ''selection_type = 1 and account_id = # {self.send(:account_id)}'' That works perfect, however when I try to eager load that relation I am getting the following error when doing a

Hi, Posting here since issue tracking isn''t the best place to discuss. I can understand habtm is moving towards deprecating support for extra attributes in join_table, and to use :through for those cases instead. To clarify, patch<http://dev.rubyonrails.org/attachment/ticket/5216/habtm_join_table_test.patch1.diff>for #5216 <http://dev.rubyonrails.org/ticket/5216>

Hi i have the model SDTicket which has a field modified_by_id and it has to take data from session[:id] Now this SDTicket model has many associated models like Activity one of them So when ever an activity happens then also the value in session[:id] is to be go to modified_by_id field SDTicket has_many activities Activity belongs to SDTicket So for that what I am trying is in Activity