similar to: select-multiple for has_many association

I have a model layer containing Movie, Person, Role, and RoleType, making it possible to express facts such as "Clint Easterbunny is director of the movie Gran Milano". The relevant model and associations look like this class Movie < ActiveRecord::Base has_many :roles, :include => :role_type, :dependent => :destroy has_many :participants, :through => :roles, :source

When a select tag generated by collection_select has a validation error the tag isn''t marked in the page. That is, the generated tag looks like this, say, <select id="obj_attrib_id" name="obj[attrib_id]"> <option value="1">Option 1</option> <option value="2">Option 1</option> </select> Whereas is should,

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

hi i have two models: GeoRegion & GeoRegionSub which have a has_many relation to each other. how can include the has_many relation in the collection_select helper? i want to have that dropdown where the parent is in black and the children indented. <%= collection_select :dl,:parent_id, GeoRegion.all.????, :id, :title %> thx -- You received this message because you are subscribed

Hi all, I ve some troubles in my small acpplication (only 2 tables). I want to follow up tasks but these tasks are linked to others tasks. So I ve tried to do store the nn relationship in other table called links 1st table : tasks columns : id | infos neutral... (as title, description etc ...) ----------------------------------------------------------------------------------- model : class

sorry for the noob question: how do i reference an association''s properties in a form helper? e.g. if i wanted to build a select list to choose a user''s address''s state (user.address.state), how would i hook that to the "method" of collection_select collection_select :user, ???, States.find(:all)

Let''s say I have the model class Reader and Magazine, connected by join model Subscription. It looks something like this class Reader < ActiveRecord::Base has_many :subscriptions, :dependent => :delete_all has_many :magazines, :through => :subscriptions validates_presence_of :name end class Magazine < ActiveRecord::Base has_many :subscriptions, :dependent =>

I want to be able to change one attribute of a link_to to be what is the current selection of the collection_select. And needless to say I can''t quite figure it out. app/views/tasks/show.html.erb Who would you like to assign this task to?<br /> <%= link_to ''Myself'', :controller => ''task_queues'', :task_id => @task.id, :action =>

I''ve been reading up in ActiveRecord::Associations and playing around with my app via the console and found some interesting methods via the code completion of IRB, but I have no idea how to use them and can only find one hint in the API http://api.rubyonrails.com/classes/ActiveRecord/Associations/ ClassMethods.html It mentions here in the has many associations that if you use the

Hi, I am new to ruby on rails. I am building an association join model and encountered the following error. Does anyone know what am I missing? > NameError in StartController#home > >d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:100:in `const_missing'': uninitialized constant Membership I have the following tables relationships Users

I have two models, A and B, with a straightforward many-to-many has_many/through association between them. So, in A I have the association processed_bs and in B I have processedby_as. This works fine. Now, I would like to also have an association unprocessed_bs in A, which holds all Bs that _aren''t_ in processed_bs. I can write a method in A that returns all those objects as a list

I am still using Rails 1.0... I have a simple has_many association: class Round < ActiveRecord::Base has_many :scores end class Score < ActiveRecord::Base belongs_to: round end When I do something like this (contrived for the sake of clarity): rr = Round.find(params[:id]) rr.scores.each { |s| logger.debug("object_id=#{s.round.object_id}") } I see a database query on

Hi, Let''s say I''ve the following Models and their relative associations: Seat ---- belongs_to :booking Booking ------- has_many :seats has_many :debits, :as => :chargeable Debits ------ belongs_to :chargeable, :polymorphic => true Why >> seat.booking.debits nil while >> Booking.find(seat.booking_id).debits [] ? Thanks. Cheers, Marco

(I posted this yesterday but it never showed up on the mailing list... weird.) I recently converted a habtm relationship into one using has_many :through. Some of my old logic relied on the ability to use the #<< operator to add items to the relationship and get them auto- saved. I''m curious to know the best way to do the same operation with the has_many :through

I am trying to list all the categories a user can be interested in with check boxes so that a user can submit these interests through my join table. collection_radio_buttons works with a simple has_many, belongs_to association: <%= collection_radio_buttons(:listing, :category_id, Category.all, :id, :name do |b| %> <%= b.label { b.radio_button} %> <%= b.text %>

I''m creating a address book. A user can have many contacts. In the user model, I put: has_many :contacts And in the contact model, I put: belongs_to :user To list all contacts, I search as following: @user = User.find(session[:user_id]) And rendering: <%= render(:partial => "contact", :collection => @user.contacts)%> To persist I am using the following

So this functionality isn''t supported natively in Rails 3 (or any versions before that for that matter) But I had found a work around via this blog post: http://geoff.evason.name/2010/04/23/nested-has_many-through-in-rails-or-how-to-do-a-3-table-join/ This didn''t work on Rails 3 because it wasn''t able to properly build the query from the join with symbols. I was

I''d like to use autosave => true for an association for its added benefits: the parent doesn''t save unless the children saves. However, it seems to skip validations when saving the children. And this seems to be the case since the beginning of time... Anyone know why? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails:

Hi Let''s say we have model Foo. Each Foo instance can have several bars. Those bars are primitive, so they shouldn''t be models. For example, Foo might be a type of convention, and the bars might be years the convention was held in. Naively, we would have a conventions_years date, and put: has_many :years inside class Convention. But then we''d get an error, since for

I''d like to be able to use a has_many :through association and treat the associations as a list but I''m getting this error when I try an use an acts_as_list method: NoMethodError: undefined method `move_to_bottom'' I''m using edge rails r6786. Here are my domain rules: Activities are things students can do. Units consists of a sequenced list of