similar to: rails-y way to handle quasi-numeric type

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,

I am trying to get more out of auto_complete than it apparently was designed to deliver. My problems seem to be two fold. 1 - I use aggregations on names... :first_name, :middle_initial, :last_name and then aggregate them using a composed_of :wholename thing auto_complete_for seems to be wired to only use table columns directly and gags on the aggregate form. 2 - foreign table columns -

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

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

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

I got it to work by changing scheduled_end_date= nil to self.scheduled_end_date= nil. I believe these statements should be equivilent. I don''t know Ruby/Rails well enough to know when, if or why that should matter. Can someone educate me please? I want to believe this framework is ready for production work, but silently dropping data is a very big problem. I expect that I''ve

I''m trying to get a collection_select generated Drop-down box to display two fields from a table (first name & last name); however, I am having trouble concatenating the symbols. It appears as though any code I put in the 5th argument for collection_select is processed prior to executing the collection_select method. The code executes successfully with 1 symbol in the 5th

Hello! I''m looking for assistance EXTENDING an example from the Agile Web Development With Rails book: Composing Data with Aggregation (page 324). I''m trying to map three columns to a single Ruby object. However, unlike the example in the Agile Web Development book, the three columns I want to map into one object come from THREE DIFFERENT models. I want to map the following

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

The new pragmatic Rails Cookbook has a drag and drop sorting recipe. Does anyone know if this works with 1.0? I''ve followed the recipe (i think), and I can drag but when I drop everything goes back the way it was. It seems that the sort logic doesn''t get invoked. I put this code in my view: <%= sortable_element ''task-list'' , :url => {

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 ...

PLEASE help me - this is making me insane. Can anyone suggest any reasons for this behavior? It occured previously, then went away and is now back. In Task.rb (where task is an active record subclass) def clear_schedule puts "clearing schedule for task" scheduled_end_date= nil #reset the scheduled end date save halt.

Hi, I''m using TextMate for rails development on OSX, but have reached a point where I need to run in a debugger and be able to step through the code as it executes. I have previously used the Eclipse Ruby plug in and another IDE for ruby development on windows, but never figured out how to run a Rails app in the debugger. How are other textmate users debugging and what else is there on

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,

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