similar to: one master table to hold symbols: good or bad idea?

I have a general design question, and haven''t written any code for this feature yet. I''m setting up a control panel for a sort of team/ content management system. A new project needs a team to work on it. The project has been saved, so we don''t have to worry about that. But each member of the team needs to have a role in relation to this project (they may have

Here is my simple example... require ''rubygems'' require ''active_record'' ActiveRecord::Base.establish_connection :adapter => "sqlite3", :database => "has_many_through.db" ActiveRecord::Schema.define do create_table "containers", :force => true do |t| t.column :name, :string end create_table "shapes",

I''m trying to use has_many :through, since my join model deserves being more than just an intersection table. But when I try to break the association, the break only seems "temporary": Let''s say my two tables are Users and Colors, and the join model is Favorites. user = Users.find(1) user.colors.length >> 2 c = user.colors.first >> #<Color:....>

I''m stymied at how to create a fixture that establishes a has_many :through relationship. I''ve watched the railscast at: http://media.railscasts.com/videos/081_fixtures_in_rails_2.mov ... but that''s for HABTM relationships. I''ve read: http://www.ruby-forum.com/topic/145676 but that ultimately doesn''t answer any question. So with no further ado:

I have an ActiveRecord that has several foreign keys, where the foreign keys act as a single compound key that needs to be unique: class CreateRelations < ActiveRecord::Migration def change create_table :relations do |t| t.references :src, :null => false t.references :dst, :null => false end add_index :relations, [:src_id, :dst_id], :unique => true end end

Hi, Whenever I restart mongrel on my production server, the first request in my browser always fails, I get this error: Processing Base#index (for 83.xx.xx.xx at 2006-09-03 16:08:47) [GET] Session ID: f1918346d193e19a70c3230286e5ce1a Parameters: {} TypeError (superclass mismatch for class Stats): /app/models/stats.rb:1 stats.rb:1 just contains a normal A/R line: class Stats <

Hello ~ Is there a way to determine within a model which controller/action instantiated the model? Thx, -- Ben Reubenstein http://www.benr75.com

I''m looking for best practice for creating a hyperlink which has both an icon and text. I am currently using this in my view: <%= link_to image_tag(''icons/add.png'', { :align => ''absmiddle'', :border => 0, :size => ''16x16'', :alt => ''New education record'', :title => ''New education

Hi, I'm working on leaf characteristics of trees. Each tree is characterised by about 10 leaf traits. The trees were sampled at 9 different locations (about 20 to 30 trees/location, NOT balanced), grouped in 3 different climatic zones (Sahelian, Soudanian and Guinean) (NOT balanced). Further, each tree is characterised by some degree of human pressure (mutilation degree), in total 4

I have a number of models that use an aggregation to combine First Name, Middle Initial and Last Name and they have been working fine. I am looking to clean this up, DRY it if possible. I have things like this in application.rb class Clwholename attr_reader :first_name, :middle_initial, :last_name def initialize(first_name, middle_initial, last_name) @first_name = first_name

Greetings railsers - I''m trying to add to a collection through HABTM, but the sql insert is trying to insert a PK rather than letting mysql produce the auto_increment''ed PK. ## @medication_dose holds a validated, saved model @medication_dose.medication_frequencies << MedicationFrequency.find (:all) The above bails with, Mysql::Error: #23000Duplicate

All, My apologies if this is a little long-winded and stream of consciousness-y :). SUMMARY: Why do we extend ActiveRecord instead of mixing it in to our model classes? Been thinking about my app''s models and starting to want to build something of a hierarchy. I have some commonality across 3 of my model classes and I''d liek to aggregate the behavior in a superclass.

Hi, I''m trying to create a select box with an onchange event. When onchange is fired, I want to redirect to a nested rest url. The problem is that I don''t know how to pass the selected value to the url: <select id="category" onchange=" <%= remote_function(:url => category_articles_path(selected value?) ) %> "> Any suggestions? -- Posted

This seems very simple, but I can''t quite get it. Probably because I''m just starting out with RoR. My view has a slew of labels and text fields; many are "required": <%= f.text_field :screen_name %> <span class="required_field">Required field</span> (The "required_field" class turns the text red and smaller.) I''d like to

I have the following models: class Book < ActiveRecord::Base acts_as_ferret belongs_to :author end class Author < ActiveRecord::Base has_many :books end and in the controller: def search if params[:query] @query = params[:query] @total, @books = Book.full_text_search(@query, :page => (params[:page]||1)) @pages =

Dear group, I am in the process of configuring 2 new servers. They are running Centos 5.5 and for the last three days they have been rebooting unexpectedly, can you point me in the right direction what to look for in the logs. I have been checking /var/log/messages but don't see anything that hint me any clues why this is happening. Your input is much much appreciated. Lisandro PS. These are

I thought I had a handle on this one but it''s causing me grief and I''m hoping somebody can set me straight. I have an object AlertTemplate which will contain a fill in the blank style hunk of web content. I then have an object, Alert, which will have a relationship to one of those AlertTemplate objects, plus some data. So, in human speak, I''d think that an Alert

(Nuby to Ruby and Rails...) I''ve implemented security using the login generator in a simple app so that I have a user table, a roles table, and a join between them (roles_users). All works as expected. I now need to check if a user has a specific role, but my approach is off somehow. Here''s what I''ve tried thusfar: user_roles = @session[:user].roles

I have a problem declaring a relationship through a join_table ; the SQL generated by ActiveRecord is correct, but there are two columns called ''id'', and the final object gets the ''wrong'' column ... Here''s a more detailed description of the data, code, and problem :- There''s a People table, with id, name, and a few things. Also a

This only saves the @person but not the @address. Shouldn''t it save both? @person = Person.new(params[:person]) @address = Address.new(params[:address]) @person.address << @address @person.save here is what I have: class Person < ActiveRecord::Base has_many :addressables has_many :addresses, :through => :addressables end class Address <