similar to: Reading Model data before update

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

Hello, I needed to add custom cache field for one of my application. I thought I will share the code showing how to do this. This code below creates and maintain a custom cache field, for keeping track of totals. Say, you have accounts, and for each account there are transactions (either deposit/withdrawal), and one will like to keep track of the total balance for an account. So, let there be a

Hi all, My app is generating a form with several bill_items that should be updated (fields to be updated are description and net). The text_field_tag names are bill_item[update][#{id}][description] and bill_item[update][#{id}][net] (and I added bill_item[update][#{id}] [id] just in case) The param received is: {"commit"=>"Save",

Don''t know why, but cant seem to get this to work for me. I have a phone number field for an addressbook. In the addressbook model I have a before_update declaration that says the following: I''d like to be able to remove all special characters (just numbers please), but this doesn''t want to work for me. before_update :format_phone def format_phone self.phone =

Hi all, Currently I''m having to do this: def self.authorized_roles(controller, action) specific = self.find_by_controller_and_action(controller, action) all_actions = self.find_by_controller_and_action(controller, ''*'') all_controllers = self.find_by_controller(''*'') role_ids = [] specific.each do |role_item| role_ids <<

Hi, I have a legacy database ''old'' and a new database ''new'' which rails uses. I set up models using old with establish_connection(old), and this works well, except for include: class OldModel < ActiveRecord::Base establish_connection(old) end class NewModel < ActiveRecord::Base has_one :old_model end a = OldModel.find :first NewModel.find(:all,

Does anyone know anything about: update_attribute_with_validation_skipping(name, value) I have read the documention, but, I must say, as much as I love ruby and rails, their documention lacks a lot, especially in the areas of examples and good, sound explanations of what methods do and how the function. The above method is a good example of this. What does the parameter ''name''

Hey guys, I''m having a hard time w/ the after_update callback on rails... As far as I can tell, when I define a after_update callback on a model, the attributes of the object have the same values that they had *before* Base.save was called. I''m probably wrong so here''s the code: UNIT TEST: def test_register_item_adjusts_account_balance account =

With after triggers in Postgres, there are special NEW and OLD vars accessible to trigger functions. Any such thing in Rails? Or would it entail doing something like setting a class var in before_update? Jack -- Posted via http://www.ruby-forum.com/.

I have a User class with a field called admin which is a boolean that determines if the user is or is not an administrator. I want to make it impossible for the last administrator for an account to be removed from the system. I need to protect against this both when deleting a user and when editing a user as you can revoke a user''s administrator privileges via a form. User

Hi all, I''ve add :before_update event to my model Before updating a record I want to check if new attributes differ to old attr. My question is how to retrieve old attributes in :before_update event ? thanks -- gratis egold 1$ http://shegold.com/

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

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

Hi, I''m doing a <model_name>.update(....) but I''m noticing that my before_update callback is not being called. If I do a find and then a save!, I notice that it is called. The problem with a find and save in my case is that I''m not able to set all my attributes in one shot by saving params["user"] and since I can''t do this, my overloaded

Besides the hashed password, which is saved to db, I have two password-attributes in my User model: attr_accessor :password, :password_confirmation I have validations on these attributes, and I need them to work both on create and update, since I have pages for changing and resetting the password. Now when I want to update just the user''s login name, I guess I have the next

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

Working through the beginning phase from the Agile book on ''Administration'' undefined method `hashed_password='' for #<User:0xb7911324> ... /usr/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/active_record/base.rb:1498:in `method_missing'' #{RAILS_ROOT}/app/models/user.rb:12:in `before_create''

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)

Either I''m not understanding how things are used, or this might be a bug in ActiveRecord. I''m using version 1.13.2. In my version of activerecord/lib/active_record/validations.rb (the svn trunk version is browsable at http://dev.rubyonrails.org/browser/trunk/activerecord/lib/active_record/validations.rb ), I have: def update_attribute_with_validation_skipping(name,

Hi I noticed that if in my code I use the following: Photo.update_all("title = ''Ruby rocks'' ", "id IN (#{@photo_ids})") All my objects are properly updated but none of the filters/callbacks are triggered. Is that what''s expected? I have a before_update filter set on the Photo class and it gets totally ignored, I guess the only way to solve this