similar to: How can I overwrite the parent.children.push(child) Method?

Hi all I have the following models: class member has_and_belongs_to_many :disc_jockeys end class disc_jockey has_and_belongs_to_many :members end The relation table is called disc_jockeys_members and has the following fields: disc_jockeys_members(disc_jockey_id, member_id, status) So far, the field status can have values like valid, invalid, locked etc., but it is not regarded yet by

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

I''m marshaling ActiveRecord objects, and I want them to be as small as possible. How can I unload everything that can be reloaded from the database? If they''re marshaled before any of the associations are referenced then the referenced objects aren''t dumped. But if the association has been loaded, how can I unload it? AssociationProxy.reset doesn''t seem to do

I have: class Post < ActiveRecord::Base has_many :comments do def published find( :all, :conditions => {:published => true} ) end end end When in my controller I do Post.find(:first).comments.published.paginate :page => params[:page] I get an error undefined method `paginate'' for []:Array Is will_paginate supposed to

Can anyone explain this oddity to me? Given two classes as follows: class Question < ActiveRecord::Base belongs_to :category end class Category < ActiveRecord::Base has_many :questions end I get the following: >> q = Question.find 6789 => #<Question:0x37e9e70 @attributes={"id"=>"6789",

What is the new way to check if a parent has child items? In rails 1.2.6 I did this: if @client.has_line_items? Client being the parent and line_items the children. Now that I have upgraded to rails 2.0.1 (on my way to current :-) ) I am getting this message: undefined method `has_line_items?'' for #<Client:0x7f3b093b01a0> How should I format the query now? Regards, Paul

Running into an interesting problem that at first glance appears to be a bug in the AR association code. However, it''s explicitly coded this way so I''m not so sure. I have some code like this: class Address < ActiveRecord::Base belongs_to :addressable, :polymorphic => true end class Person < ActiveRecord::Base has_many :addresses, :as => :addressable,

If I try: @article.article_groups.delete_if {|x| x.group_id == x.group_id } It does nothing. If I try: articletmp.article_groups.each{ |x| @article.article_groups.delete(y) } It deletes some of the groups. @article.article_groups.clear works. Why dosn''t the to first examples work as expected?? Do I have to put groups I don''t want to

Hello all, I''m currently having an issue with some specs, specifically scope issues (probably more of a scope issue than a spec issue at this point)... Here''s the error: ActiveRecord::AssociationTypeMismatch in ''A new User should know what role it has'' Role expected, got NilClass D:/ruby/projects/restful_authentication_test/config/../app/models/role.rb:5:in

Today I just spent 3 hours (and before a demo!) trying to figure out why my polymorphic association fields were breaking. Turns out someone else put in a patch for this 6 months ago. I''m not sure if its the same solution I''d use... I''d rather find_or_create attempt to use AssociationProxy#build if its available and only Base#new if we''re not on a proxy.

Hi all I have the following models: class Member < ActiveRecord::Base # DJ Profiles the member is part of has_and_belongs_to_many :disc_jockeys, :join_table => ''members_are_disc_jockeys'', :uniq => true end class DiscJockey < ActiveRecord::Base # Members that are part of this DJ profile

I''m wondering whether I''m wasting my time trying to verify that an addition I''ve made to legacy code is in fact setting a new attribute on a model. Substruct''s (http://dev.subimage.com/projects/substruct) OrderHelper contains this method: 1 def create_order_from_post 2 @use_separate_shipping_address = params[:use_separate_shipping_address]

I have a spec which is failing, but I just can''t say why. Maybe I''m missing something painfully obvious? Here is the pastie of the results & the spec: http://pastie.caboo.se/42626 The spec to look for is "should have an array of users" I''ve printed out ("puts''ed") to the terminal the fact that the values are *opposite* to what

Hi, First post, please be gentle! I couldn''t find any mention of this already I''m using ActiveRecord and I want to enforce mutual exclusivity on a has_and_belongs_to_many. A concrete example: I have a User which can have one or more Roles (student, tutor, headmaster, administrator etc). However if a user is a student they cannot hold any other role. I was hoping to find

Hello, I needed to add custom cache field for one of my application. I thought I will share the code showing how to do this. This code below creates and maintain a custom cache field, for keeping track of totals. Say, you have accounts, and for each account there are transactions (either deposit/withdrawal), and one will like to keep track of the total balance for an account. So, let there be a

Hi all, I cannot figure out how to correctly use the with_output_buffer helper method (located in ActionView::Helpers::CaptureHelper) inside a custom FormBuilder. Below follows a simplified example. I''m trying to achieve the following behavior in an ERB as suggested in the form_for helper docs in the Rails source: ========== <%= form_for @object, :builder => MyFormBuilder do

Hello, Rails provide counter cache field for associations, I want a similar cache for totaling up values (say account_balance = sum_of_deposits - sum_of_withdrawals). I was wondering if rails, already has another surprise in store for me, or is there any plug-in or how-to for doing these kind of things. Thanks. -- Surendra Singhi http://ssinghi.kreeti.com, http://www.kreeti.com Read the

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

Hi All, It seems that :finder_sql in a HABTM association only interprets a single quoted #{id} the first time through a query. I see examples of this being used in a few places (though with has_many) and I don''t really see how to use :finder_sql without a #{id}. Am I missing something or is this just broken? -- Paul Haddad (paul.haddad@gmail.com paul@pth.com)

I have two models, A and B, related to one another by a many to many association and I want to validate an object of model B as it''s being added to the association based on both its own attributes and attributes of the particular object of model A that it''s being associated with. I''ve realized that I can''t do this if the association is represented by a habtm