similar to: has_many relation handling

My envrionment is Rails 1.1.2, Ruby 1.8.4, MySQL 5.0.21 on WinXP. When I run ''rake migrate'' after pulling the lastest 1.1 branch of Globalize plugin, I get the following error message: (in C:/Rails/Application/medicalmind) == GlobalizeMigration: migrating ============================================== -- create_table(:globalize_countries, {:force=>true}) -> 0.2110s

Hello, I''m stuck, I''ve got a model Product and would like to add a new model called Category. Furthermore, I want to set up a many2many relationship between the mentioned models. the problem is that I do not know how to set the primary key in the categories_products table. this is what I''ve got in my migration file: create_table :categories do |t| t.column :name,

Hi there, I''ve tried to add a m:n mapping table using the migration mechanism. ruby script\generate migration add_categories_notes_mapping and filled the migration file with: class AddNotesCategoriesMapping < ActiveRecord::Migration def self.up create_table :categories_notes do |t| t.column :category_id, :integer, :null=>false t.column :note_id, :integer,

I''m new in Rails, and I''m building my first application. I''m trying to make a FAQ for this application, organized by product (questions about each product) and category (questions of different categories or topics), and there is something I can''t figure it out how to do. I have these tables: create_table "faqs" do |t| t.column "question",

Hi, I am sorry for maybe stupid question. I am new in rails. I am trying to create very simple weblog systeme. I know threre are plenty of them, but It''s good to study. I create following rule in models/post.rb validates_length_of :header, :in => 3..50, :allow_nil => false, :message => "At least 3 characters" It''s working fine with default scaffolt add

I don''t think this needs much explanation. Is what I''m trying to do even possible? class CreateLanguagesProducts < ActiveRecord::Migration create_table languages_products do |t| t.column :language_id, :integer t.column :product_id, :integer t.column :language_position, :integer end end class Language < ActiveRecord::Base acts_as_list :scope =>

2 tables Items and Categories Categories (id, name) Items (id, name, category_id) Category_id can be null, and there are Categories that has not an Item. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email

Hi, I have performed the cookbook tutorial. Before tailoring the views and controllers, when I put in the model recipe.rb: validates_uniqueness_of :title validates_length_of :title, :within => 1...20 And I tried to introduce some new recipe without the above conditions I got the message: --------------------------------------------------- New recipe 1 error prohibited this category from

I have a real-world application with some complex queries that I want to convert to Arel (as part of an upgrade to Rails 3.1). So that I can understand what I''m doing before I flail around in my real app, I wrote a little sample app (just the models) with some similar associations -- one table joined with itself and more tables that join to another table, so there are some queries that

I''m trying to do, what seems like, a very basic join. However, the association just doesn''t seem to work. I''m sure it''s something very simple but I don''t know what. class Role < ActiveRecord::Base belongs_to :packages belongs_to :users end class Package < ActiveRecord::Base has_many :roles has_many :users, :through => :roles end

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",

This works : class Recipe < ActiveRecord::Base belongs_to :category end But (when I add validation) this does not work : class Recipe < ActiveRecord::Base belongs_to :category validates_length_of :category, :within => 6..20 validates_uniqueness_of :category, :message => "already exists" end thank you -- View this message in context:

I moved from acts_as_tree to acts_as_nested_set because I need the all_children method. I''ve seen an alternative way to add this method to acts_as_tree here: http://www.chuckvose.com/articles/2006/05/24/recursive-children But I''d prefer to use the more efficient way of acts_as_nested_set (and not to have to revert to my old code). Anyway, here''s my issue: if I

(I posted this earlier but it doesn''t appear on the group, so I''m writing it again, If it appears twice, I apologize.) I have a drop-down box that allows the user to select a language. I want to use Ajax to render a filtered list of items based on the language selected. I don''t want the user to press a Submit button nor refresh the page, of course. I''m using

I''ve created the following associations using :through: class Person < ActiveRecord::Base has_many :attendees, :dependent => :destroy has_many :events, :through => :attendees, :uniq => true end class Event < ActiveRecord::Base has_many :attendees, :dependent => :destroy has_many :people, :through => :attendees, :uniq => true

I am brand new to oop and am having a difficult time getting my head around some ruby stuff. In specific, I am trying to create a library style app that lists topics, articles and comments. I have a table called topics, a table called articles and a table called comments. My models, controller and view are all listed below. What I want to happen is to have the list view list each topic along

Hello again: I''m hoping that somebody, anybody, can help with this question. How do I make sure that records in a join model are unique? Using the scenario outlined in Chad Fowler''s "Rails Recipies", number 16, "Many to Many Relationships Where the Relationship Iteself Has Data". Here are the tables: create_table :magazines do |t| t.column :title,

Hi, In the Agile book, it is told that by putting a :unique => true will dedup the row with ActiveRecord. But it''s not working out for me. Do I need edge rails for this? I simply want to dedup any join model associations, for instance: category_id | inventory_id 384 1 first entry 384 2 this would be ok. 384 1 this would

Alright, noob here, etc. etc. Trying to figure out the has_many usage. If I understand correctly, when you declare that a table/class has_many whatevers, the rails assumption is that there will be a foreign key in the whatevers table pointing back to the ''id'' primary key in the first table. This doesn''t seem to be the only way to have a ''has_many''

Hi, I have performed the cookbook tutorial. Before tailoring the views and controllers, when I put in the model recipe.rb: validates_uniqueness_of :title validates_length_of :title, :within => 1...20 And I tried to introduce some new recipe without the above conditions I got the message: --------------------------------------------------- New recipe 1 error prohibited this category from