similar to: Composing Data from THREE models with Aggregation

I''m trying to use composed_of within my model. I have a field in my database named ''card1'', which is simply a string. I have this in my model class Player < ActiveRecord::Base composed_of :card1, :class_name => ''Card'' end class Card attr_reader :value, :suit def initialize(s) @value = s[0].chr @suit = s[1].chr end end The

Can anybody share some examples of their Money implementation ? I''m trying to setup a Model to use this library, but can''t seem to wrap my head around how it is exactly supposed to work. My Model (Foo) looks like: =============== composed_of :commission, :class_name => "Money", :mapping => [ %w(commission_cents cents), %w(commission_currency currency) ] Yet, in

ActiveRecord supports composed_of for value objects which is fantastic but one thing that it doesn''t seem to support (or at least I am unable to find any documentation for) validation of the value objects. For example, given the following: class Message < ActiveRecord::Base composed_of :sender, :class_name => ''EmailAddress'' composed_of :recipient,

At the risk of being banned for posting the same question twice, I thought I''d try once more with a question for the title rather than a statement (on the basis that perhaps questions get answered and statements ignored ;-) ) ActiveRecord supports composed_of for value objects which is fantastic but one thing that it doesn''t seem to support (or at least I am unable to

I am trying to use composed_of in my model, but I not succeeding. With the code I pasted below, I cannot perform this action in the console: property = Property.new(1, "px") I get NameError: uninitialized constant Property when I try to perform that action. It''s not finding my class I made I suppose. The Property class is in the same file as the Element class, element.rb.

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

How can auto completion be done for a composite field ? Concrete problem : Suppose the class Person with reference to a City object. The City has a name and a postal code. When entering a Person I want to enter the city in one text field that shows a composition of the city name and the postal : "city (postal)". And this with auto complete (and should afterwards be linked to the

Does anyone know the best way to track time zone information. There doesn''t seem to be much documentation on this. So far it seems like a simple db field like create table accounts ( id int unsigned not null auto_increment, name varchar(50) not null, time_zone varchar(50) not null, ... primary key (id) ) and a class like class Account < AR ...

I''m new to this list, I''m a student in History, Computerscience and a bit of Philosophy from the Netherlands... I have started using rails a few weeks ago, I did read the Agile Webdevelopment with Rails book, and I generally started to love Rails for it''s sheer beauty and intelligent structure... However I came across something that puzzles me quite a bit. It''s

Hi, I''m obviously doing something stupid, but I''m trying to figure out how the Money library (http://dist.leetsoft.com/api/money/) is supposed to work. I have a Product model and I want to have an attribute in my model called "price" and I want it to accept Money objects. So I have this in my Product model. class Product < ActiveRecord::Base composed_of :price,

I have a number of models that use an aggregation to combine First Name, Middle Initial and Last Name and they have been working fine. I am looking to clean this up, DRY it if possible. I have things like this in application.rb class Clwholename attr_reader :first_name, :middle_initial, :last_name def initialize(first_name, middle_initial, last_name) @first_name = first_name

Guys, I have a relationship between model classes that I believe is best represented by inheritance, but the likelihood that things will change often is driving us to composition instead. So, I have a class called Autos, and subclasses called Suvs, Minis, Mids, Sports, for example. We have been requested to avoid the STI approach to this, because of fear of a quickly growing table with

What is the best way to create a drop down where the viewable text in a concatenation of 2 or more columns? For instance, I hane a lookup table with these columns. Model FOO columns: id , name, phone In my drop select tag, I''d like the user to see: "name1 phone1" "name2 phone2" etc.. I know I can do this using find_by_sql . .. But, isn''t there a more

I have a class called Duration that represents a unit of time. It has lots of time-related methods and an attribute that represents the duration in seconds. I want to store it in my db. I had a column type of NUMERIC, so if i save it, rails trys to coerce it to a float automagically and fails. I need to display it and store it as a number but treat it in the middle layer as a Duration so I can

I am sitting with the Agile book on my desk and scratching my head at the discussion on aggregation - perhaps that isn''t what I need. I have a db called clients. fields include - first_name middle_initial last_name I want to combine them all into one name element in a list view. I can add/edit the fields separately but in the list view, I only want the one combo field. Is there a

I''m stuck in a catch-22 type problem. I have an insert form for a table that uses the validation in the model. i.e. When you click submit on the form and haven''t filled in the required fields then you get the nice rails error messages saying "field can not be blank". This works fine until I introduce some more logic. What I''m trying to do is to validate

I have a strange problem with my setup of Passenger and Ruby Enterprise Edition. Sometimes the loading of BigDecimals from the database and session fails (silently) and the variable containing the BigDecimal is just empty. I cannot pinpoint where/when/how it happens, and it IS only periodic. I am using the newest versions of both Passenger and REE - I have even tried to run with latest commit

I''m trying to figure out the rails why to break a single database field out into multiple fields on a form, very similar to how rails does with dates. How can I create my own object that mirrors the date objects behaviur in how it accepts the multiparameter assignment from the form. Example: A phone number field (to force formating on the user) could be broken into 3 form fields,

Hello, I have a class Person class Persoon < ActiveRecord::Base set_table_name "Persoon" set_primary_key "p_persoon" has_many :adres, :class_name => "Adres" composed_of :name, :class_name => Name, :mapping => [ [:naam,:naam], [:voornaam,:voornaam], [:voornaam2,:voornaam2], [:persnickname,:persnickname], [:perssortname,:perssortname] ] def

We''re looking at big IBM hardware running AIX as a potential deployment platform for the big credit card processing Rails and Ruby stuff that my team is currently building. I was wondering if anyone else is running on AIX or knows if Ruby is well-supported on this platform. I googled the subject, but http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/3daaf60b012c1921 is