similar to: Enumeration sum

trying to set up a "has_and_belongs_to_many" relationship would very much appreciate the help, not sure what im doing wrong at all. Scheme.rb class Scheme < ActiveRecord::Base validates :schemename, :presence => true belongs_to :user has_many :levels, :dependent => :destroy has_and_belongs_to_many :works end Work.rb class Work < ActiveRecord::Base

hallo everybody, i already googled the following problem, but there are so many questions regarding "has_many :through", that i just couldn''t find what i was looking for. so, i''m really sorry if this has been asked before. if so, just drop me the link. i have a has_many :through relationship similar to the following example: class Group < ActiveRecord::Base

Hi I get a following error: ActiveRecord::AssociationTypeMismatch in Cmdb#create ConfigurationItemAttributeValue expected, got Array RAILS_ROOT: ./script/../config/.. Application Trace | Framework Trace | Full Trace c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/active_record/associations/association_collection.rb:128:in `raise_on_type_mismatch''

I ran into a problem using options_from_collection_for_select : ActiveRecord::AssociationTypeMismatch (Topic expected, got String): /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/ active_record/associations/association_collection.rb:128:in `raise_on_type_mismatch'' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/

Hi. In this setup "account has_many :consultations". Can anyone explain the following behaviour to me? Rails 1.2.2. The "sum" method should return 0 for an empty array. >> a = Account.find(1) => #<Account:0x39c80a8 @attributes={...} >> a.consultations => [] >> a.consultations.sum(&:foo) ArgumentError: wrong number of arguments (1 for 2)

Hi. Im new to Ruby and new to Ruby on Rails and have problems realizing a =20= simple many_to_many relationship: My tables: items <-> items_users <-> users ------------------------------------------------------------------------=20= -------------------------------------- id user_id = id name item_id name ... = password = ...... My Code: class

In my continued efforts to port my rails 1.x app to Rails 2.1.2, I keep running into what appear to be ActiveRecord bugs. I am using an :include on a :has_many definition: class Request < ActiveRecord::Base has_many :service_types, :order=>''service_types.id ASC'', :include=>:service_response [...] There''s no reason this wouldn''t be supported in

Hi, I''m really excited about getting the create() method working on a nested hash. The Rails book make it seem like I''m close to doing the right thing but I think something very small is not quite right. The error at the below isn''t giving any hints that I understand. I have a form that produces a nested params hash and sends it to my add_to_cart controller method.

Hi, here is a warningmessage i got while i am testing my new puppet installation with .23.2 and storedconfig and reports and all the bell and whistle :) DEPRECATION WARNING: Calling .create on a has_many association without saving its owner will not work in rails 2.0, you probably want .build instead See http://www.rubyonrails.org/deprecation for details. (called from create at

Setup as follows: class Resource < ActiveRecord::Base belongs_to :user validates_presence_of :filename validates_uniqueness_of :filename, :scope => "user_id", :message => "already exists, try uploading another file or deleting first." acts_as_taggable :join_class_name => ''TagResource''

Hope someone can tell me what''s up, because this has me baffled. I have an Image model, and a Provider model. Both are defined as "has_and_belongs_to_many" relating to each other. In my image form partial, I have a bit of AJAX generating the provider_ids array dynamically from a provider AJAX search on the same page. So for example, each time I click on a provider name that

Hello friends! I am trying to make a database that will have a group of people set to committees, and a person can be in multiple committees, and a committee obviously has multiple people. The people are senators at my university. These are my current models: senator.rb: -- class Senator < ActiveRecord::Base validates_presence_of :first_name, :last_name, :floor has_and_belongs_to_many

Most times I look up a list of books I want to know a page reference for each one, so the views that display booklists expect an array of two-element arrays, constructed via a method in the model like so: (class Category) def book @book = Array.new self.bookshelves.each { |x| @book << [x.book, x.pages] } return @book end When I get the list of all books that a user has

Hi... Isn''t there a proper way or hack/workaround for the following? * For the example with unfortunate disabilities.. look below,,, Usage of has_* (associationmethods) do {def with_deleted AccociatedModel#with_scope} {Paranoid''s#find_with_deleted}... The has_one associations give me a nil object when invoking it with Model.association_OBJECT.with_deleted. Has_many does like

Without getting too deep into my app I''m wondering if anyone has any clues what might give rise to the error posted below. It occurs when I run my unit tests. class Actor < AR:Base belongs_to :court_case end class CaseCause < AR:Base belongs_to :court_case end class CourtCase < AR:Base has_many :actors has_many :case_causes ... end def my_test_method ...

Hi Just curious if anyone can explain why using a dynamic find fails to work with << operator I have standard habtm relationship class User < ActiveRecord::Base has_and_belongs_to_many :roles Now when I assign a Role via << after saving the new User I get wierd behaviour but only when using the dynamic version of find i.e @user = User.new(p) if @user.save #

I''ve been stumped on this for a few days and I''m not sure if it''s an error on my end or an actual bug. I have a system where I have workshops and users. Workshops have students, presenters, and troubleshooters. I wanted to represent this simply by using has_many :through with :source. Workshop has_many :presenters, :through =>:presenterships, :source=>:user

Hi I have two models Keyword and KeywordResult, they basically look like this: class KeywordResult < ActiveRecord::Base belongs_to :keyword validates_presence_of :title, :url, :keyword_id end class Keyword < ActiveRecord::Base has_many :keyword_results, :dependent => :delete_all acts_as_tree :order => "text", :foreign_key => "top_keyword" end Before you

Hi, This is just kindof a RoR question, but since you all potentially do the same things as I do, I thought I''ll ask here.. Im trying to use the boolean type in the database. Migrations is no problem, it even converts the 0/1 values from my import CSV to false and true. However, I cannot make the :conditions part of a find work: Loading development environment (Rails 2.0.2) >> c

Hi all ! I''ve written a Character model, each character has many Attributes. My schema.rb looks like this: create_table "characters", :force => true do |t| t.string "first_name" t.string "last_name" t.integer "user_id" t.datetime "created_at" t.datetime "updated_at" end create_table "attributes",