similar to: ActiveRecord DateTime mapping

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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)

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, I have a somewhat complicated relationship question. I''ve been banging my head about this for some time and have given in and decided to ask the list :) Here''s what I''m trying to achieve: Products can have variants. For example, a t-shirt could come in small, medium and large, but also black, green and blue in the first two sizes, but only blue in large.

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

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 to everyone, My name''s Carmine and I''m a rails newbie. So, here''s my newbie question :) I have a model with one attribute named "kind" of type integer. This attribute can assume values within the range [0..5]. Each value has a "verbose" representation e.g.: 0 => grain, 1 => liquid ... To visualize the verbose representation I''ve

Hello List, I''m a bit spent on this problem, and my code might be whack. I seem to be encountering a problem where the primary key on a join table is not being resolved correctly. I will elaborate after some code bits. I am creating the join table using migrations, and relevant model code is this: class Post < ActiveRecord::Base has_and_belongs_to_many :records

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 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

Hi there, I have a file upload form on my page that is for images. In the model I have this: def file_data=(file_data) @file_data = file_data write_attribute ''extension'', file_data.original_filename.split(''.'').last.downcase write_attribute("content_type", file_data.content_type) write_attribute("current_name",

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 are datatypes that need to be converted back and forth from a string representation: they need to be parsed both coming from the database, and coming from elsewhere like views. Dates are an example, and I recently needed to implement a more forgiving converter for decimal numbers. So we have here at least two flows of execution, for example: post.date = "22-jan-2007"

I''m having difficulty understanding how to make validation of facade columns consistent with validation of other active record columns. To illustrate this, I''m going to extend the facade column example discussed on pp. 284-5 of AWDR. Let''s say that there is a "rectangles" table that has width and height columns. For some unknown reason, width is stored in

I have a field called Fax in my model. I store it as a 10-digit number with no other characters but I display it as a nicely formatted phone number. I have a validation on it like this: validates_format_of :Fax, :message => ''number should be formatted using (XXX) XXX-XXXX'', :with => /^\(\d{3}\)\ ?\d{3}-\d{4}$/ If I put 1234567890 (10 digits) in my field, the

Hi, Is it possible to override the default accessors that are created by Rails? For instance I had this User object which has the column headings "password" and "salt" in its SQL table. I did manage to override the setter accessor for password by using def password=(new_password), but when I tried doing the same for the reader by using a def password method (to return a

Hi I am probably missing something, so please help: I have a table called ''zipped_responses'' with an ''item_names'' varchar column. I want to create a comma separated string of ''names''. I have an ''add_item_names'' method which takes a ''name'' and put it at the end of a string with a preceding comma. The

Hello, I have a model Model: SPECIAL_FEATURES = %w(none top) class Model validates_inclusion_of :special_feature, :in => Model::SPECIAL_FEATURES, :on => :create, :message => "special_feature %s is not defined" belongs_to :team def special_feature attributes = attributes_before_type_cast if attributes["special_feature"]

Hi Everyone - I''ve got an odd sort of error when I try to use validates_presence_of for a MySQL ''datetime'' field. Here''s the relevant portion of the table definition: mysql> describe student_surveys; +---------------------+---------------------+------+----- +---------------------+----------------+ | Field | Type | Null |

Can anyone clarify something for me? I''ve been having a hard time with write_attribute. If I do (for instance in a callback): write_attribute(:user, user) Is obj.user_id set automatically too? And viceversa, if I do: write_attribute(:user_id, user.id) Does that set obj.user for me? Doesn''t seem like it''s doing that for me. Anyone understands exactly what