similar to: Can I tell if the associated record is new in a belongs_to save?

I have two objects, QuoteInput and Insured. QuoteInput has one Insured and Insured belongs to QuoteInput. I don''t understand what I''m seeing. I assign an Insured to a QuoteInput. The Insured object has invalid data. I call save! on the quote input. QuoteInput has no validations. I expect two things to happen - 1) an exception should be thrown, indicating that there was a

Hi, I have a Country class which has_many: regions. At the same time, the corresponding countries table has a boolean column named has_regions. It happens that when I try to access that attribute using country_instance.has_regions? , I can see in the logs that Rails is querying the database with a SELECT that''s counting the regions in that country. Obviously, that''s

Hi, I''ve been googling and searching the forums for some time but can''t seem to find exactly what I''m looking for. Suppose User HABTM Products (for example a favorites list). I would like to construct a single query for finding Products ordered by the number of Users that have flagged them as favorites. Although I can construct the query using SQL a with a

Does anyone know if Rails is supposed to validate associated objects on creation? Say you have a User model, with has_many posts, and a Post model which belongs_to user. Further, the Post model has a validates_uniqueness_of :title. u = User.find(1) # this should pass u.posts.create :title => ''my new post title'' # this should fail u.posts.create :title => ''my

Hi all, happily coding along, but it seems a belongs_to record is not saved. # Create some stuff def create_project @contact = Contact.new @project = Project.new(@params[''project'']) @project_contact = ProjectContact.new(@params[''collect'']) @project.project_contact = @project_contact contact =

I wonder if you can have more than one has_many :through association between 2 models. For example... I have a model Teacher and a model Class Now, 1 Teacher works in many Classes, right?. So I need a join model like class Work < ActiveRecord::Base belongs_to :teacher belongs_to :class end But I also would like to know if a teacher CAN teach a class before I

First, BRAVO for this wonderful plugin: has_many_polymorphs ! Now my problem: 4 models : Collection, Page, Fragment, Belonging (which is the join table): 1 class Collection < ActiveRecord::Base 2 has_many_polymorphs :elements, 3 :through => :belongings, 4 :from => [:pages, :fragments, :collections], 5 :as => :collector, 6 :parent_order =>

When you define belongs_to in a model, you can either access association or association_id. I was wondering how Rails would handle things if you set each one to be different. I made two simple models: class Foo < ActiveRecord::Base; end class Bar < ActiveRecord::Base belongs_to :foo end Now here''s a script/console session. >> f = Foo.create => #<Foo:0x270ec10

As far as I can tell, the counter_cache option on a belongs_to model doesn''t actually save anything in the database. For example, I have the following models: class Parent < ActiveRecord::Base has_many :children, :conditions => "deleted_at IS NULL" end class Child < ActiveRecord::Base belongs_to :parent, :counter_cache => true end With the following

I have the following models: class Card < ActiveRecord::Base belongs_to :deck belongs_to :front, :polymorphic => true belongs_to :back, :polymorphic => true end class TextContent < ActiveRecord::Base has_one :card, :as => :front has_one :card, :as => :back end The conflicting has_one declarations don''t work. What I need is

Is it possible to execute a DML statement against a MySQL database from within Rails? I have a table I''m using for batch processing. It needs to be truncated to reset the primary key before each batch insert statement. I looked at the API here: http://api.rubyonrails.com/classes/ActiveRecord/ConnectionAdapters/DatabaseStatements.html#M000532 and didn''t notice anything that

Hi, I am just starting of in rails. I am trying to understand the features of rails and I have this burning question. (and search is not available now): Apart from relying on the automatic CRUD sql script produced, is there a way I can create my own sql script ex: with many joins between exixting tables (for reporting ). All I need is to declare the custom query and place the result in a

I wanted to use ARTS to add RJS in a behaviour driven way to my application, but I''m having some trouble asserting a replace_html with a partial. I''ve created a pastie (http://pastie.caboo.se/60694) which contains the RJS I want to spec, the spec which I already wrote and its failure message. I''m currently using RSpec-0.9.2

I have a Deck object and a Card object with their corresponding tables. (You know a deck of cards.) When I destory a Deck it leaves orphaned cards in the database. Is there a way to set up the objects with ActiveRecord so that when a parent object is destoryed the child objects are destroyed as well? My code below. class Deck < ActiveRecord::Base has_many :cards end class Card <

I am a bit confused about counter_cache here. The API docs http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html say that only the belongs_to association can take the :counter_cache option. When I try to use it on a has_many I get an "unknown key(s): counter_cache" error. Why would this be the case? belongs_to means that this model has a field with an id

I have two tables: class PgmUpdate < ActiveRecord::Base has_many :pgm_visits, :foreign_key => ''pgm_update_fk'' ... and class PgmVisit < ActiveRecord::Base belongs_to :pgm_update, :foreign_key => ''pgm_update_fk'', :dependent => true ... According to the has_many docs (http://api.rubyonrails.org/classes/

Hi, Day 3 with rails here. Forgive me. If this has been covered many times before, pls just point me at the article. I worked through the Rolling with Rails tutorial (http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html) built up my cookbook. Things work great. I now want to add Ingredients to my app. So, a Recipe will have 1 or more Ingredients and any single ingredient can be

Noob Question 31,265,232 if I''m searching on an object, say order, that has many "order_lines" and I want to display order lines by Quantity ( an attribute of the order_lines ) descending how could I do that without having to do a find() with :order, but something like; Order.order_lines.each do |ol| <!-- code to diplay the line --> how can I determine the field

Hi ! I just have a simple question. I am writing an app using rails to familiarize myself with the framework (which is pretty cool, by the way). I just wanted to know why these two work differently (since "find" should be a synonym for "detect" according to the Pick Axe) : current_item = @invoice.line_items.detect {|i| i.product.id == key} current_item =

Hello, I''m not able to get Errors object when saving some Model instance in ActionWebService::Base subclass. I want to create API method that will return ID of the object when saved successfully. When validation fails and the object is not saved I''d like the method to return ID, as well as the array of ValidationError custom struct. But I cannot fill in this because unsaved