similar to: Pre-populating a has_many relationship?

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

Getting the through items from a has_many :through :uniq relationship In a nutshell, I have been using the has_many :through :uniq relationship, and I want a DRY way to list the join model objects. Currently, my objects include taxon objects, toxin objects, data_object objects, and taxon_toxin_citation objects ("citation" is another word for data_object). A taxon has many data objects,

I have 3 models that define members, groups and the subscriptions: Member, Group, and GroupMember. class Member < ActiveRecord::Base > has_many :group_subscriptions, class_name: "GroupMember" > has_many :groups, through: :group_subscriptions > attr_accessible :email, :password > end > class Group < ActiveRecord::Base > has_many :member_subscriptions,

I have the following 3 models (2 models joined by an intermediate): 1. class Exercise < ActiveRecord::Base 2. has_many :routines, :class_name=>''RoutineExercise'' 3. end 1. class Routine < ActiveRecord::Base 2. has_many :exercises, 3. :class_name=>''RoutineExercise'', 4. :order=>''position'' 5. end 1. class

Hello all, I''m having problems creating a new record with has_many :through My application is quite complicated so I''ll try to explain it as easy as I can. I have a many to many relationship with Projects, IRBs and Reviews. Where reviews is the joined model. In the new project view, I have a link (add IRB). This will add an a list of IRBs to the new project form. I have visited

I have users who belong to a group. I also have a room that belongs to a group. I want to use a has_many through association to link the room and the users as such: class Room < ActiveRecord::Base belongs_to :group has_many :users, :through => :group end The SQL generated for the search is incorrect: SELECT users.* FROM users INNER JOIN group ON users.group_id = groups.id WHERE

I''m sure there''s something right under my nose that I''m missing. I have two tables with two parallel one-to-many relationships. I wish to use the :finder_sql parameter to essentially ''or'' the two foreign keys. What isn''t working for me is performing a ''sub-search''. Let''s say the tables are "stores" and

Hello, I am creating a gem in which I need to add a new has_many relationships: ... included do |base| base.has_many :foos end def some_method self.foos # end ... Here Foo is a model I created and it is places in app/models/Foo.rb I wonder if I can use syntax like the line marked with #? If yes, I got NoMethodError for using "self.foos" when writing rspec

I have a bit of code in a controller that looks like this: @current_festival.monitor_preferences.each do |pref| if pref.user_id == @me.id pref.preference = params[:monitor_pref] #pref.save end end @current_festival.save_with_validation(false) the Festival class has_many :monitor_preferences the MonitorPreference class belongs_to :festival In the configuration above, the

Hi all ! Is this supposed to work ? class Email < ActiveRecord::Base has_many :to, :class_name => 'Recipient', :conditions => "recipients.source = 'to'" do def create!(*args) with_scope(:create => {:source => 'to'}) do super end end def build(*args) with_scope(:create => {:source => 'to'}) do

Hi i am getting following error ActiveRecord::StatementInvalid in Blog#index Showing app/views/blog/index.rhtml where line #10 raised: Mysql::Error: #42S22Unknown column ''posts.user_id'' in ''where clause'': SELECT * FROM posts WHERE (posts.user_id = 4) Extracted source (around line #10): 7: <div class="separator">&nbsp;</div> 8:

Using Ferret and the acts_as_ferret plugin, I would like to retrieve results based on models descended from a parent model: class Post < ActiveRecord::Base acts_as_ferret :fields => [ ''title'', ''body'', :post_author, :post_comments ] ... has_one :author has_many :comments end I would like to

We have a test that has been working find until we upgraded to rails 2.3.5. I''m not too familiar with mocks/stubs so maybe there is an easy solution. Here is a simple example of our scenario. Class Person < ActiveRecord::Base has_many :aliases, :dependent => :nullify before_destroy :mark_aliases_as_deleted def mark_aliases_as_deleted self.aliases.each do

I''m working with three models: - Charge. has_many :budget_plans - BudgetPlan. belongs_to :charges, :rollups - Rollup. has_many :budget_plans This works out perfectly. A budget plan contains the ID of a charge and rollup and then there''s a 3rd attribute for hours. So working with data is no problem. My budget plan scaffold works nicely so I can select a charge, select a

Hello all, I would like to be able to update the "amount" of a certain item in me order list. The problem I run into is how to define the text_field element. @order is the current order, which has_many :order_item which in turn belongs_to :order. order_item has a field "amount" which should be modified... What I tried is this below, but I get a undefined method

Three tables: users: id clients: id admin_contacts: user_id, client_id class Client has_many :admin_contacts has_many :contacts, :through => :admin_contacts, :foreign_key => :user_id, :class_name => ''User'' end I added the :contacts for ease of use of grabbing the user objects associated with the admin_contact. This all works great, I can grab the Users that

Hi there all. Sorry if the question sounds silly but i''m rather new at the ''mocking'' stuff... So here is my problem (code helps more than talking): the model: class Item < ActiveRecord::Base ... has_many :images, :dependent => :destroy ... protected def validate errors.add(:images, "cannot be empty") if self.images.count end end the

Hi, I have a self-referential has_many :through relationship setup to track relationships between users. Basically relationships are modeled as a join table with an extra column ''relation''. create table relationships ( user_id integer unsigned not null, friend_id integer unsigned not null, relation char(1) not null, ) --- relations --- f = friend r = request to

Noob Question 31,265,232 if I''m searching on an object, say order, that has many "order_lines" and I want to display order lines by Quantity ( an attribute of the order_lines ) descending how could I do that without having to do a find() with :order, but something like; Order.order_lines.each do |ol| <!-- code to diplay the line --> how can I determine the field

Hi All, I''ve been trying to figure out what''s wrong here for a little over a day and figured i''d reach out to the ROR list. A pastie explains the code a bit better than directly in email: http://pastie.org/private/mvu0zr1xm18bsk6nfbyama Basically i have an Artist, and he has many Songs through a join model called Releases. An artist can be "featured" on a