similar to: has_one and find_by_id issue

Hello everyone, I am racking my brain with a modelling question and can''t wrap my around the benefits of STI or Polymorphisms. I am trying to model Questions and Answer behavior but I think I am not using rails full power here. I have (in simple terms) Question has_one Answer Answer belongs_to Question I also have Topic has_many Posts Post belongs_to Topic Now i am

Tried to submit a ticket in Trac, but it reported an error... Doing a Model.find_by_id(nil) after creating an object of type Model returns that object -- and the next time, returns nil. It should always return nil. For example, Step 1. Create an object: >> Foo.create(:name => "bar") => #<Foo:0x2aaaac3ade20 @new_record=false,

I have a model named User. When running this application from the console I can call User.find_by_id(nil) and it returns nil. When running this application during testing or through WEBrick or Mongrel calling User.find_by_id(nil) returns the newest record in the database. But it only does this the first time you call it with nil. The second time you call User.find_by_id(nil) it returns nil.

Hi I?m trying to bring across all related data. My table clients has a foreign key field that stores the id of an organization How can I grab the details of the organization to use in the clients show.rhtml file? Thanks Scott -- Posted via http://www.ruby-forum.com/.

This has the look of a "just don''t quite get it yet" problem. I am using the ActiveRecord.find_by_id method to identify the parent object (Quiz) to tie to the child object (Question) at create time. Here is the stdout log: 127.0.0.1 - - [31/Mar/2006:22:43:22 CST] "GET /question/new? parent_quiz=ff2d7022-be0a-11da-9f01-00400506faf5 HTTP/1.1" 200 806

I read these: http://www.ruby-forum.com/topic/185297#new http://www.freezzo.com/2008/05/14/override-default-find-conditions-for-model/ it works, it override the .find perfectly, however it does not cover .find_by_id or other .find_by_XXX Is there anyway to override all the find function of a modal? I want to set the default "select" for User modal, only return name and id, but not the

I''m trying to do an IN query, where I have an array of user objects imaginatively named ''users'': :conditions=>["user_id IN (?)", users.collect{|u| u.id }.join('','')] this ends up with: ... IN(''1,2,3'') ... Obviously I want this to be: ... IN(1,2,3) ... or even ... IN(''1'', ''2'',

I''m playing around with the Postback action recipe listed in the recipes book. Here is the default code given: def edit @recipe = Recipe.find_by_id(params[:id]) || Recipe.new if request.post? @recipe.attributes = params[:recipe] redirect_to :main_url and return if @recipe.save end end Here is what my code sort of ended up looking like, altho i''ve ripped it apart

Hi to everyone, I have the following models: class Attachment < ActiveRecord::Base has_attachment :content_type => [:image, ''application/pdf''], :max_size => 3.megabytes, :path_prefix => ''../private/attachments'', :storage => :file_system, :processor => :rmagick,

Hi! I''m using the latest&greatest backgroundrb with rails 2.0.2 on ubuntu dapper. I''ve made an app that lets you run a query on several servers at once, which are selected at runtime. Therefore, for each server that is selected, I spawn a new worker and assign its work. After everything is completed, the workers are deleted. I often get this error:

I added a new column using a migration. Once I updated the new.html.erb, edit.html.erb, show.html.erb, and the index.html.erb I brought up my web pages. There was a field to update show. I tried the update and the it was successful but the update did not show up in any of the other pages. What did I miss? I am using 2.3.3 of ror.

Weird problem.. I''m new to rails and ruby... maybe someone can explain what I am not getting.. Env: Mac OS X 10.5.3, Rails. 2.0.2, ruby 1.8.6 (2007-09-24 patchlevel 111) A User class created using the restful_authentication plugin A Company class (has lots of fields not really important to the problem below) Users can have many companies, entered into the User.rb model as one would

Hi Guys, I have some strangeness with routing, using standard route map.connect '':controller/:action/:id'' map.connect '':controller/:action/:id.:format'' Using console I did >> rts = ActionController::Routing::Routes >> rts.generate(:action => "edit", :controller => ''vendorlocations'', :id => 10) =>

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

Hello, im trying to wrap a fairly ugly legacy schema using AR. How to handle normalized informations which aren''t connected via the pk? create table what ( myid int, myclass int, ;; references blahclass.blahid mygender int ) create table blahclass ( blahid int, mdesc1 text, fdesc1 text) ) I would like to wrap this as class What < AR::Base has_one :blahclass class

Hey Guys, I''m getting a peculiar bug working with Observers and has_one associations. When a has_one association is invoked by an Observer it always returns null. I looked in the development.log file and the SQL for the has_one association isn''t even being executed. On the other hand, when I replace the has_one association with just a hand crafted method, it does get called

Hi, I''m trying to write a blog application where each post has a single header image associated. My models: ---------- class Post < ActiveRecord::Base belongs_to :blog has_many :images has_one :header end class Header < ActiveRecord::Base file_column :image_path end class Image < ActiveRecord::Base belongs_to :post file_column :image_path end The controller targets I

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, I am very confused about an aspect of has_one and has_many relations, with regard to using the build method, and saving the belongs_to side. It''s a somewhat long post. so please bear with me :) First let''s consider the has_one scenario. Let''s say I have a student who must own exactly one car: class Student has_one(:car) end class Car belongs_to(:student)

My apologies if this is a dumb question, but I''ve searched around and haven''t been able to come up with a solution. Is there a way when specifying a has_one association to specify a default value for an object if data is missing in the child table. For instance: class Student has_one :university end if no university is associated to the student in the database, I would