similar to: ActiveRecord associations: design question

Here is the situation: - the client makes a request - it is followed by AJAX polling The server needs to keep track of some stuff during this process. I have been using the Session and it "mostly" works… until the user decides to open another tab in her browser and she makes a new, parallel request. In this case, the data from the two requests is merged, which leads to bugs. This got

Hi guys, When I do: temp = User.find(:all, :joins => "INNER JOIN contents ON users.agent_id = contents.id", :select => "contents.id, users.id, users.u_date") temp.first.inspect It seems to work fine, but it only returns: #<User id: 6, u_date: "2009-10-03 19:32:23"> but not the contents.id information. I

Hi guys, I must be missing something obvious with pessimistic locking. Here is what I do (Rails 2.3, mySQL): In my Foo model: def test Foo.transaction do lock = UpdateLockForFoo.find_by_foo_id(self.id, :lock => true) sleep 30 end end For each Foo model, I have an UpdateLockForFoo. This "lock" needs to be acquired before doing any changes to Foo. I believe it works,

Hi guys, I need my app to make a few hundreds requests to external web services as quickly as possible. The web services are fairly fast, but still: if I do the requests one after the other, it is too slow. My understanding is I have two options: a- Threads. b- Typhoeus Typhoeus seems great. Yet, the web services are all quite different (some are SOAP, some REST...) and therefore wrapped into

Hi all. Got a stupid-simple question about associations. I have two models - school and course. There are a fixed number of schools (set up in the migration). Each course is assigned a school and a school will be associated with multiple courses... How do I set up the associations? Do (can) I have School :has_one :course and Course :has_many :schools? Does the schools table then get a course_id

I have 2 distinct types of users (artists and curators) in my system and they currently share all associations (eg has_one :portfolio). However, a curator shouldn''t have a portfolio so I would like to only add that association when required. Obviously I could just return nil for that method, but it doesn''t feel right having that there in the first place. What''s the best

I''ve read the stuff about polymorphic associations here: http://wiki.rubyonrails.org/rails/pages/UnderstandingPolymorphicAssociations But I''m not sure what exactly they are and what their advantage is. Are they the same as HABTM, but they''re "two-way"? Joe -- Posted via http://www.ruby-forum.com/.

I have a problem with the :include option in find for my has_one :through association. I have Users, Profiles and Customers, all connected to each other with a has_one :through => :membership association like this: class Profile < ActiveRecord::Base #could also be user or customer has_one :membership # i saw an acrticle of Ryan about has_one :through, there this would be has_many, is

Hi, it would be nice to have the touch option in has_many associations also. I have a scenario like this: An user has some credit (money) and some advertises. Each advertise can be enabled or disabled depending on some rules. One of the rules is that the user should have money. Each time the money of the user change, the advertises are touched, enabled/disabled and then cached, as they are much

***Scroll down to see the dumb quick question*** I have two Models: class Template < ActiveRecord::Base end which has this migration: /snip t.column :name, :string And the other model: class Product < ActiveRecord::Base has_one :template end with the migration: /snip t.column :qty, :integer, :default => 0 t.column :specialDescription, :string t.column

Suppose I have one table: states id statename And I have two other tables that contains states: houses id color state_id places id place_name state_id How would my model relationships look like? class State < ActiveRecord::Base belongs_to house belongs_to place end class House < ActiveRecord::Base has_one state end class Place <

I have the following models: class Resume belongs_to :resume_assignments end class User belongs_to :resume_assignments end class ResumeAssignment has_one :resume has_one :user end When I delete a resume, I want to make sure that its associated ResumeAssignment gets deleted also. Calling destroy_all to delete some resumes doesn''t seem to do this. Is there an option that will

Every once in a while, I pipe up and whine that "belongs_to" should really be ''refers_to" [http://dev.rubyonrails.org/ticket/2130]. It''s time again. I''ve got a bunch of stuff going onto eBay, so, like any good engineer, I don''t just post it manually: I design a Rails-based inventory database that creates a semantically-correct XHTML/CSS auction

MODEL class User < ActiveRecord::Base has_one :address, :dependent => :destroy accepts_nested_attributes_for :address end CONTROL def new @user = User.new @user.build_address # Adicionei ... VIEW partial _form .... <% f.fields_for :address do |b| %> # Adicionei <%= b.text_field :city_manual %> # Adicionei <% end %>

I''m trying to figure out the Rails way to model the following problem: I have 2 tables. One (let''s call it location) contains a single address. The other (let''s call it company) contains 3 address. I''m trying to figure out the best way to model this. I''ve created an address table, a set up the model as follows: class Address <

Having problems with STI. Names below have been changed to protect the innocent. Imagine a system that allows someone to apply for one of two different types of school scholarships. Each scholarship goes through a different review process, represented by a state machine (this is not a state machine question). So there are two state machine classes that differ slightly and subclass a generic

Hi there- I''m a newbie to this board, RoR, and web development in general. So please forgive me if this is in the wrong place or if the solution is really simple... I''m trying to conceptualize the relationships between a series of models for a page creation function. What I''d like is to have a Content Page which consists of a series of Content Blocks. The Content

I''m having a difficult time wrapping my head around a set of models and their associations and seeing how they map into Rails. I''ll try to lay out my problem using the has_many and belongs_to structures. I have a RuleSpace, a Rule, and a Subject. A RuleSpace has_many Rules A RulesSpace has_many Subjects through Rules A Rule belongs_to (many) RuleSpaces A Rule has_many

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

DB field names: If I have a table that references 2 or more separate users from my users table, is there a recommended naming convention for this situation? In my case, I have 3 users associated with a record in my projects table: requester_user_id created_by updated_by I could name one of them "user_id", and then projects.user would work I guess, but wouldn''t work