similar to: adding extra variable to a class, how to access it?

Guys, Say I have the following: ----- class Person < ActiveRecord::Base has_one :house end class House < ActiveRecord::Base belongs_to :person attr_accessor :color end ----- Then I have the following code: ----- john = Person.new john.house.color = "Blue" john.save ----- What I would like to have happen, is that on first call to john.house, if house hadn''t been

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)

All, I''m finally doing my first real form in Rails - the model object that I''m entering information for has 8 validations so far. If I type in good values for all the fields but one, I get the pretty validation, and the nice field highlighting, but all of the fields are cleared, forcing me to retype all of that info. That is a big drag. Is there a standard way to get the

Would really appreciate it if someone could tell me why this is happening: I override ssn method of AR class so I can encrypt/decrypt to/from the db: class Person < ActiveRecord::Base def ssn=(value) write_attribute(:borrower_ssn, Crypto.encrypt(self.encryption_key, value)) write_attribute(:borrower_ssn_final_four, value[5,4]) end def ssn # this begin - rescue can be

Hi all! I have come into a strange issue in Rails that I am hoping someone can shed some light. To make a very long story short, I have been researching how to override ActiveRecord::Base#read_attribute and write_attribute to perform security checks at the model level (influenced by the ModelSecurity generator). Shortly after implementing some code to check this behavior, I began to

This seems like it must have been asked before - I really _did_ try to find it in the archives, so my apologies if it''s already out there. Utilizing ActiveRecord, I would like to specify a prefix for the column names in my table. For example, in ''Recipe 16 Integrating with Legacy Databases'' (Rails Recipes, from PragProg, by Fowler) they deal with integration with a

Hello all, I''ve been trying to use a facade column but I notice that the form helpers don''t seem to respect the facade. In the following example I''m trying to story the prices as Integer values but present them to the user as decimals. class Product < ActiveRecord::Base def price=(new_price) write_attribute(:price, Float(new_price)*100) end def price

Hi All, Is there a way to filter / modify the output of a model class before it''s returned to controller/view that''s calling it? Example: I have a field phone_number which I always want to preformat using the number_to_phone() helper.... Any help is appriciated. Thanks! -- Posted via http://www.ruby-forum.com/.

Hi, I''m looking for a way to extend one of my models to allow some level of abstraction between what goes into it and how it is stored. For example, say I have a Product and I want to set it''s price. A person using the website will type the price in euros. Internally, I''d like to store the price as an integer value of cents. I can currently do this with some ugly code

Hi all - To avoid floating point issues, I''ve decided to store monetary values in cents in the database. However, the user will enter these in dollars and cents. Two questions: 1) How do I do the validation for the currency format? It looks like ActiveRecord truncates the cents since it thinks the field type is a Fixnum. Am I forced to do validation in the controller? 2) Where

I have a model where I want to change the display for a single attribute such that if the value is an integer, it displays with no decimal point (e.g. "1"), but if it is non-integer, it displays with a decimal point (e.g. "1.25"). The easiest way to do this seems to be if I could override the to_string method for my_model.my_attribute.to_s. Is there a way to do this? Or

I want to expire caches if a certain field of an item changes. How can I compare the item field''s old value to its new value (in the create, or after_save, etc. method)? thanks csn __________________________________ Yahoo! Mail - PC Magazine Editors'' Choice 2005 http://mail.yahoo.com

Hi all, I have some problems inserting data into a legacy table. the key field of this table is a field named CIN which is a varchar(15). when I try insert into this table using a form (generated by the scaffold generator) I get this Error : _____________________________________________________________________ undefined method `CIN_before_type_cast'' for #<Candidat:0x370d8c8> |

Hi, All I have an encountered an issue where the args field is not saved correctly to the database. I encounter an error like this: ActiveRecord::StatementInvalid (RuntimeError: ERROR C22021 M invalid byte sequence for encoding "UTF8": 0xcb3a H This error can also happen if the byte sequence does not match the encoding expected by the server, which is controlled by

There''s got to be a simple answer: how do you get the IP address of a visitor in Ruby? Any help would be appreciated! -- Posted via http://www.ruby-forum.com/.

I have a model object for which I would like to effectively hide one attribute (a password hash) so that it is never returned by a find_* call. I have tried several unsuccessful means. Is there a simple way to do this that I am overlooking? Thanks, Doug

Dear all, I have a table with a column named "type" and I ''d like to access the type field of the correspondant model object but I get a deprecation warning when I use the following code : modelObject.type "type deprecated use class instead" How can I access such a named field in rails ? Johan Johan Duflost Analyst Programmer Belgian Biodiversity Platform (

Hi, I''m really new to Ruby on Rails and I''m going to use it for my personal webpage. I would also like to use for one of my profesional projects, the problem is that our Database admin has its own conventions that does not respect Rails'' ones. He uses its own conventions for naming tables AND fields names. Is it possible to set up the table name and fields names

I''ve got a user object which has quite a few attributes mapped to the database. As of right now I''ve got some validations in the model like: validates_presence_of :password, :message => "You must specify a valid password." validates_confirmation_of :password, :message => "Password doesn''t match the confirmation." validates_presence_of

If the associated object of a has_one association has been loaded, it is resaved when the parent is saved. Eg: class Person < ActiveRecord::Base has_one :user end class User < ActiveRecord::Base belongs_to :person end p = Person.find(:first) p.save # As expected, nothing happens with the user association p.user # Loads the associated object p.save # As well as saving the person, the