similar to: Eager Loading a Relationship That Has No PK/FK

Could someone explain this? #config/initializers/ar_attributes.rb module ActiveRecord module AttributeMethods alias_method :ar_read_attribute, :read_attribute def read_attribute(attr_name) p "read_override" ar_read_attribute(attr_name) end alias_method :ar_write_attribute, :write_attribute def write_attribute(attr_name, value)

Hi, I''m somewhat of a Rails newbie and am trying to understand how to formulate n-way (3 or 4 way) joins in Rails (where the join tables contain extra data as well.) Let me give you my basic entities: foos id - pk name - unique bars id - pk name - unique bazs id - pk name - unique frozs id - pk name - unique then i have two separate join tables: foos_bars_bazs - 3 way join

This SystemStackError is driving me crazy. It only takes place when testing with WEBrick - I can''t reproduce it with any tests. It is caused by calling the "missing" id method (base.rb:2435) on my ActiveRecord class. WEBrick and my tests are running as the same user, with a `ulimit -s` of 10240. Plus the query works sometimes so I don''t think this matters.

I have a table (contact) with several fields and it's PK is an auto increment field. I'm bulk loading data to this table from files which if successful will be about 3.5million rows (approx 16000 rows per file). However, I have a linking table (an_contact) to resolve a m:m relationship between the an and contact tables. How can I retrieve the PK's for the data bulk loaded into

I love using ActiveRecord Migrations to build tables. Sometimes, I don''t want to use autogenerated PK''s - I want to set them automatically (why? I''m importing read only data from a large list of medications, and want to use the PK''s assigned by the medication research company...). Is there anyway to do this using Migrations? I know that I don''t

Hi, I was wondering how could you create a model that is tied to all the records in one table, and retrieves the values of all records on first load, and also handles the updating of its values. For example, suppose I have this table: id INT(11) PK group CHAR(40) name CHAR(40) value CHAR(128) updated_at DATETIME Sample rows: group name value --------------------------- main something

I am new to Rails and Ruby. I''ve been a WebObjects developer for a few years and before that J2EE (shudder). I wanted to try RoR so I am porting an existing Web app. I am running the latest release on Tiger and PG8. Right now my single table has three attributes: id | integer | not null hotel_name | character varying(255) | not null hotel_location |

Hello, im trying to wrap a fairly ugly legacy schema using AR. How to handle normalized informations which aren''t connected via the pk? create table what ( myid int, myclass int, ;; references blahclass.blahid mygender int ) create table blahclass ( blahid int, mdesc1 text, fdesc1 text) ) I would like to wrap this as class What < AR::Base has_one :blahclass class

hey! I have the following table structure in my DB | users | ------------ | (pk)id | | username | | pass | ------------ (1:n) | users_objects | | objectattributes | ------------------ ---------------------------------- | (fk,pk)user_id | (1:n) | (pk)attribute | |(fk,pk)object_id| | (pk,fk)

Hi all, I have two tables: TABLE 1 A pk - fk (referencesc TABLE 2) B pk C pk D pk E F TABLE 2 A pk G H I L I don''t use incremental field (id). I''d like don''t use find_by_sql. How can I define both models to use correctly find method (with include)? With only one column primary key I haven''t problems. I thought two solutions, but I don''t like these

Hey all, I''m using acts_as_ferret and globalize. I stumbled upon that post on google: http://osdir.com/ml/lang.ruby.ferret.general/2007-01/msg00068.html does anybody know if it''s included in the latest a_a_f or if it''s planed to be? I can''t seem to find anything about it. thanx in advance Pat

All, I have been able to successfully use the optim( ) function with "L-BFGS-B" to find reasonable parameters for a one-compartment open pharmacokinetic model. My loss function in this case was squared error, and I made no assumptions about the distribution of the plasma values. The model appeared to fit pretty well. Out of curiosity, I decided to try to use nlminb( ) applied to a

I''m trying to use has_many :through, since my join model deserves being more than just an intersection table. But when I try to break the association, the break only seems "temporary": Let''s say my two tables are Users and Colors, and the join model is Favorites. user = Users.find(1) user.colors.length >> 2 c = user.colors.first >> #<Color:....>

Like lots of other folks, I''ve been searching for a way to scratch my fixture itches. Rathole is my extraction of a few techniques we''ve successfully applied at my day job. We''ve been using Rathole for a month or so now, but I''d really like some feedback from a wider audience. Rathole tackles: * Conflicting PK''s (no more id''s in fixture

Or is it ? Need to be able to :- @search = Form.find(:all, :include=>[:form_type, :form_type_items], :conditions=>....) I need in the Form model a :form_type_items, the question is, what is the relationship type? Current Models:- Form belongs_to :form_type FormType has_many :form_types has_many :form_type_items FormTypeItem Belongs_to :form_type Form ---------------- | id |

Hello All, I am new to ROR, and can''t seem to get HABTM to cooperate entirely... however I might be abusing it! Before I try a different strategy I thought I''d ask here and see if I''m missing something simple. So say Projects and Companies are related. Projects can have multiple Companies, and Companies can be on multiple Projects. But, the same Company can also

Hello, I have a situation where the foreign key into a table doesn''t correspond to that table''s primary key: my_table ------------- id (pk) name ... other_table -------------- id (pk) my_table_name (fk references my_table(name)) ... I want to be able to say something like: class OtherTable < ActiveRecord::Base belongs_to :my_table, :foreign_key => { :my_table_name

Hey guys, I just implemented very simple and primitive class table inheritance in ActiveRecord. The goal is for this to become mature enough to become a true feature in Rails. Check it out here: http://guest@blog.raylucke.com/svn/inherits_from Here?s how it looks in action: create_table "books", :force => true do |t| t.column "product_id", :integer t.column

When I create a child record I''m not automagically getting the parent ID put into the fk field. Does object.new take parameters that allows me to do that as part of the AR record creation? Or do I need to do it separately? Or am I missing the boat altogether ;-) Thanks, Bill -------------- next part -------------- An HTML attachment was scrubbed... URL:

I suspect this is a bug. Or a limitation. Problem: ---------------- When you include a STI class in a ''find'' : @results = Result.find :all, :include => :event , you are forced to specify the fk and the class name : belongs_to :event , :class_name => "Event", :foreign_key => "event_id" . Full code: ----------- class Event <