similar to: Newbie question: has_many to multiple classes

Anybody know how to find out all the class names that a model has specified as "has_many"? I''m hoping there''s some sort of an array I can access.

It seems that using a join model that joins with two has_many''s will fail to generate proper SQL class StudentSemesterRecord < ActiveRecord::Base belongs_to :semester has_many :discipline_records, :through => :semester end class Semester < ActiveRecord::Base has_many :student_semester_records has_many :discipline_records end class DisciplineRecord <

Hi I''ve noticed ActiveRecord::Base::has_many fails for String arguments. The following code works when all arguments to the ActiveRecord::Base::has_many calls are Symbols: class Country < ActiveRecord::Base has_many :country_products, :dependent => true has_many :products, :through => :country_products end ruby script/console >> Country.find_all.first.products

My application has two models I''d like to have multiple join tables between, Users and Groups. Users have the ability to subscribe to a Group, while a Group would like to know its membership. Additionally, a User can administer several Groups and a Group should know about its several Administators (Users). I have the following declarations: class Administrator <

Hi everyone. I''ve made a default change to has_many :through associations that I felt was important to make before they''re released. This is after some tickets and confusion I''ve seen regarding has_many :through. class Connection < ActiveRecord::Base belongs_to :user belongs_to :channel end class Channel < ActiveRecord::Base has_many :connections

Hi all, My question is somewhat complicated, but bear with me. My project has a number of models: User, Program, and Team. Users belong to multiple Programs. Programs have multiple teams, but Teams belong to one program. For each Program a User belongs to, he can belong to multiple Teams. (Think of this in an athletic context where users are athletes, programs are universities). So my

Didn''t have quite enough space to describe it there...basically i''m having a problem with the :uniq option in my tags. I''m using acts_as_taggable_on_steroid which adds these associations to my Resource class: Resource has_many :taggings, :as => :taggable, :dependent => :destroy, :include => :tag has_many :tags, :through => :taggings, :uniq => true

I was wondering if it''s possible to some how control the :order given on a has_many depending on another attribute? Or do I need to just create multiple has_many relationships pointing to the same table but with different orders and then select which one I use in the controller instead? e.g class Category < AR::B has_many :products, :order => //something magical?// end

Hi, I am working on a scheduling app and I have a perpelextion (new word). I am wondering if the problem is my data model I have Users. Users can create Events. Users can be invited to Events created by other Users. So... user.rb class User < ActiveRecord::Base has_many :invitations # invitations to other users'' events has_many :events, :through => :invitations # all events

We have a User model and a Connection model which basically represents edges in a digraph (User to User, self-referenctial). Each of these edges can have a :connection_type which is currently just a char(1). has_many :friendships, :class_name => ''Connection'', :foreign_key => "source_user_id", :conditions =>

Hi, I haven''t done any associations before, so please forgive my incorrect use of terminology... If I set up a has_many :through association, can I manipulate the associated instances directly (like an Array), or do I need to manipulate the join model? For example, suppose I have two classes and the associated join model: class foo has_many :foo_bars has_many :bars, :through

Hi. I have a couple of best practices questions regarding polymorphic associations, naming join tables and user permissions. Currently I have implemented the user authentication model from the rails recipes book. Basically it goes something like this: MODEL CLASSES: class User < ActiveRecord::Base has_and_belongs_to_many :roles end class Role < ActiveRecord::Base

First the data model: class Forum < ActiveRecord::Base has_many :topics, :dependent => :destroy, :order => ''created_at desc'' end class User < ActiveRecord::Base has_many :topics, :dependent => :destroy has_many :comments, :dependent => :destroy has_many :replies, :dependent => :destroy end class Topic < ActiveRecord::Base belongs_to

I have this code that is using svn externals with rails EDGE working fine for the past couple of months. A couple of days ago, this code died. Even after deleting vendor/rails, this code doesnt work: class Tag < ActiveRecord::Base has_many :taggings has_many :events, :through => :taggings has_many :users, :through => :taggings end class User < ActiveRecord::Base # Virtual

Hi, The standard setup: class Task: has_many :studies, :class_name => "Study" has_many :datasets, :through => "studies" class Dataset: has_many :studies has_many :tasks, :through => ''studies'' class Study: belongs_to :task belongs_to :dataset Now, if I have an edit view for my Task, is it possible to set up the form so that in the

Can anyone help me with this, which has been making me tear my hair out for 2 days now ? I have the following classes using has_many :through relationships... (I''ve changed the class names to make it easier to understand, so don''t beat me up about naming conventions ;) ) class Movie < ActiveRecord::Base has_many :localdetails has_many :territories, :through=>:rights

Gentlemen, I have searched the group and have not found any post that clarifies thsi s=issue to me. Please forgive me in advance if I missed something. I have 3 models: Ticket has_many :citations, :dependent => :nullify has_many :violations, :through => :citations Violation has_many :citations, :dependent => :nullify has_many :tickets, :through => :citations Citation

Hello all, I''ve been trying out Rails 3 and can''t get past this issue: I have a simple has_many :through: class Author < ActiveRecord::Base has_many :author_series has_many :series, :through => :author_series end class Series < ActiveRecord::Base has_many :author_series has_many :authors, :through => :author_series end In my controller I would like to

Hi everyone. Ive part of a project that I need to refactor, and im having some difficultly deciding which path to take. Perhaps someone can help, I think its primarily a design question. A Spec consists of many Nests and many Parts. Nests contain Parts. Here''s what I have, which works well currently: --------------------------------------------------- class Spec <<

I''ve got a User model and a Book model. A user is required to submit books each month to be reviewed by other users. I have the following relationships defined: # the join model book_review.rb belongs_to :user belongs_to :book end book.rb # each book is reviewed by many users. This allows us to get the BookReview # objects associated with this book has_many :book_reviews,