similar to: Generating unique random tokens for ActiveRecord objects

Assume a model Parent and another model Child. Child belongs_to Parent and Parent has_many Children. The following fails: @ p = Parent.find(:first) assert p.equal?(p.children[0].parent) @ It seems odd to me that I and my child''s parent are not the same object. In fact, this is royally screwing me up. Can anyone tell me why this is or point me at a relevant discussion, blog posting,

Hi list, I get the error "Not unique table/alias" (myql 4.1) when trying eager load 2 classes that use the same base class (not STI) Example: <code> class Wedding < ActiveRecord::Base belongs_to :bride, :class_name => ''Person'', :foreign_key => ''bride_id'' belongs_to :groom, :class_name => ''Person'',

I''ve been developing an application in Rails 3.0.3 using Ruby 1.9.2. It is one of my first applications using Rails 3 and I am quite pleased with the progress thus far. However, I am wanting to add a feature that I have thought through, but I am not sure where to really begin. Essentially, I am building a dumping ground for files, much like Dropbox, however this is mostly for personal

My model is very simple, it''s mostly just a join table that represents which tournaments a user has registered for. class Registration < ActiveRecord::Base belongs_to :user belongs_to :tournament validates_presence_of :user_id, :tournament_id validates_uniqueness_of :user_id, :scope => :tournament_id end the validates_uniqueness checks to make sure there''s no

Hi guys, I can''t find a clear answer to this: is it possible/correct to have several threads write to the same Starling queue at the "same time"? It doesn''t seem reliable according to my tests - but maybe I am doing something wrong. If I do: def test_starling FooWorker.asynch_foo_test(:my_id => ''foo'') temp = [] for i in 1..1000 temp

Hi, I''m trying to use ParseDate within a for loop but I get this error: can''t dup NilClass Any suggestions for making this work? Thanks, -Jason

Even though it''s a little OT, I thought I''d announce the free public beta of a new Rails app that I''ve been working on for a while: http://9cays.com Think of it as mini-mailing list software. For a lot of smallish conversations, normal mailing list are too heavyweight (requiring setup, moderation, admin, etc.), but group email is a pain because messages

In Rails 0.14.3, I''m doing the following in a view: <%= select ''folder'', ''format'', [''a'', ''b'', ''c''] %> This line in is failing with: ActionView::TemplateError (too few arguments.) Am I calling select incorrectly? (Yes, the @folder object does exist, and does have an attribute

I create a simple engine with a simple controller: class FredController < ApplicationController def hello render :text => ''Hello, world!'' end end and I create a simple functional test within the engine: class FredControllerTest < Test::Unit::TestCase ... def test_hello get :hello assert_response :success end

Is it me or is my model getting the created_at from the wrong model! I have a HABTM relationship between Problems and Tags. In one of my controller I do the following: def view @tag = Tag.find_by_name @params[:id] end In my view I do this: <% @tag.problems.each do |problem| %> ... <%= problem.created_at %> ... <% end %> Now, how come the created_at

I want to create a random string of length n that is made up of characters and integers. Is there a function in rails or ruby that allows me to do this? Thank you my friend :-). John Kopanas http://www.kopanas.com ===================================================================== http://www.soen.info - source of the freshest software engineering information on the net

I''m looking for someone to confirm the following as a bug in Rails 1.0 before I post it to Trac. If I use eager loading on an association that has conditions defined, the conditions are ignored. The following example illustrates the problem. I have two tables: create_table "blogs", :force => true do |t| t.column "name", :string end create_table

Brian Yandell <byandell@wisc.edu> writes: > Folks, > I am working on a Windows system which is part of the UW-Madison > statistics LAN. R is maintained on a file system to which I cannot write. > I tried installing a package and got the following interplay: Set the lib argument to install.packages to a directory in which you do have write permissions. From ?install.packages

THE SCHEMA IN THE MODEL a small write up on ''putting the schema in the model'' This is a write up on an issue best covered in a mailing list thread of Januari 2006 (see the links in the text), I repost it because I think it deserves a place on the agenda. == Why? == I was switching back and forward between the model files and the schema.rb -- off course I have

Performance experts, Normally to receive e-mails is to pipe their content to script/runner individually from a mail server, sendmail or postfix. Doesn''t this configuration run like Apache 1.3 with CGI, meaning for each e-mail a boot of the entire Rails environment and thus low scalability? Is there anything working like lighttpd-fcgi or going toward its approach? DD -- Posted via

Martin, Thanks for the helpful reply. Alas I had forgotten that (implied) unfavorable comparisons of *nix systems with Windows systems would likely draw irate (but always substantive) responses on the R-devel list -- poor phrasing on my part. :) Regardless, let me try to address some of the concerns related to the construction of the MRE itself and try to see if we can clean away the shrubbery

So, I''ve written a partial that does some stuff with a given instance of my class "entity". Entity is ActiveRecord. I''m able to retrieve all sorts of data from an @entity, until I do something like: <% for @attribute in @entity.attributes %> <div id="attribute_<%= @attribute.id %>"> <%= render(:partial =>

any suggestions on why I am gaining this error. ActiveRecord::StatementInvalid in ProjectsController#create Mysql::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' , , , , )'' at line 1: INSERT INTO projects (`name`, `date_created`, `quote_id`, `client_id`, `description`, `user_id`)

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, A few months ago someone posted a message about specifying validates_* constraints on a per-attribute basis. I just created a small plugin that allows you to do this. Here''s an example from one of my models: class Country < ActiveRecord::Base attribute :name, :string do |a| a.validates_length :within =>

I''m having some trouble with an instance variable being read as nil in my app. I have an image uploading, that can be added to categories. The page loads up initially fine, and if I upload an image without errors everything works fine. I''m working on the validation, but with the code I have if their are validation errors it renders ''new'' again, but reads