similar to: ActiveRecord collection_select and has_and_belongs_to_many

I don''t have a class by the name of "ReviewersScoreCard", yet my many to many configuration looks as follows. And, these errors while running some simple test with ./script/console is giving me a headache: ./script/console Loading development environment. >> r = Reviewer.find_first => #<Reviewer:0x19d0a48 @attributes={"id"=>"1",

I know there have been threads on this before but I was thinking shouldn''t multiple collection_select automatically update habtm relations when you update_attributes? In order to get multiple collection_select to work I use: collection_select(:user, :group_ids, Group.find(:all), :id, :name,{},{:multiple=>'''',:name=>''group[id][]''}) In fact if I

I''m experimenting with Rails on the Recipes example first before I dive into applying it to my intended application. I''m exploring which will be more work: to rename all the primary id''s in the legacy database, or to work around the fact that the primary id''s are not called ''id'' within RoR instead. I''ve been successful in using a

Imagine I want to track people, and the clubs that they belong to. table people with columns person_id, person_name table clubs with columns club_id, club_name And I have the association table: table clubs_people with columns person_id, club_id Now I know how to do this habtm between the two, in order to associate people with clubs that they belong to. However my application also needs a

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

Hi all I got the following class: class Member < ActiveRecord::Base has_and_belongs_to_many :buddies, :class_name => ''Member'', :join_table => ''members_have_buddies'', :foreign_key => ''member_id'', :association_foreign_key =>

I''m having a problem with belongs_to and has_and_belongs_to_many. Here''s a brief summary of the models involved: class Member < ActiveRecord::Base set_primary_key ''member_id'' has_and_belongs_to_many :projects, :join_table => ''projects__members'' has_many :projects, :foreign_key => ''created_by'' end class

I am working with mapping ActiveRecord onto a legacy database. All is going well (using set_table_name, set_primary_key, etc), but I can''t get my many<=>many relationships to work. My contrived example of the situation: Student has_and_belongs_to_many Teachers. This is mapped via table student2teacher where the foreign keys are studentId and teacherId. The primary key in Student

I the following three models which all have has_and_belongs_to_many # User <-> UserGroup <-> Permissions class UserGroup < ActiveRecord::Base has_and_belongs_to_many :users, :join_table => "user_usergroup_join" has_and_belongs_to_many :permissions, :join_table => "usergroup_permission_join", :uniq => true end I can do this: permissions =

I have more or less the same problem. I''m trying to build a system where users can enter their friends. But the solutions seems not to work for me. I used same sql: CREATE TABLE `friends` ( `user_id` int(11) NOT NULL default ''0'', `friend_id` int(11) NOT NULL default ''0'', KEY `user_id` (`user_id`), KEY `friend_id` (`friend_id`),

Here''s a simplistic model class. class Person < ActiveRecord::Base has_and_belongs_to_many :relatives, :class_name => ''Person'', :join_table => ''relatives'', :foreign_key => ''from_id'', :association_foreign_key => ''to_id'' has_and_belongs_to_many :brothers, :class_name =>

hello, I''am new to ROR and I have a problem. I have to models "rights" and "roles" on a has_and_belongs_to_many relationship, through "roles_rights" table. When I try to add a new role although I put in my form fields for each right, a record is added to table roles but none to roles_rights. I am using Ruby 1.8.4 rails 1.0 mysql 5.0 here is my code:

Hi there, I''ve got a table construction like this: presentation contactstate Hilton new Mc Donalds emailed etc. called visited etc. Now i''ve created an join table presentationcontactstate with extra fields like comment and date time. so i know for example when i called a specific presentation. Now

Hi, I''m having a little trouble figuring out how to make a self- referential HABTM bi-directional. I have a Employee class. Each employee can have a couple of bosses, who are also employees. The employee class has the following HABTM: has_and_belongs_to_many :bosses, :class_name => "Employee", :join_table => "bosses_courses", :association_foreign_key =>

Hi all, I''m working with a legacy sqlserver db and I''m trying to override the insert sql in as defined in the HABTM method below(becasue the join has three primary keys), but I''m getting the error: ''undefined local variable or method `record'' for Project:Class'' has_and_belongs_to_many :people, :class => ''Person'',

I am running on Rails 2.2.2 on Solaris (and also on my mac) against mysql. For some reason, when I use a select in the partial, the database does not get updated with the changed value. I am using checkbox for other fields which works perfectly. I can provide more information if needed, but I would like the field to work as a dropdown instead of a text field. My Model:

Hi Chris, Yesterday you kindly submitted an answer to my question on modelling many to many relationships. I''ve briefly tried the proposed solution but so far with no luck. Before I get too involved - I''d like to know if mapping three way :join_tables is "legal" in a Rails sense. I only ask since you put (untested) in your mail and I can''t find any docs on

I have a site where Users can become Friends with other Users. I used to do this with a habtm, but of course I want to stay up-to-date and convert this to a has_many :trough. Unfortunately I can''t get it to work.. the documentation on this feature is a bit sparse at the moment. This is my old habtm: has_and_belongs_to_many :friends, :join_table => ''user_friends'',

I''m trying validate date before they''re stored into the DB, but it seems, validation doesn''t work.. my model looks like this: class Company < ActiveRecord::Base has_many :contacts, :foreign_key =>''company_id'' has_and_belongs_to_many :categories, :join_table => ''company_to_category'', :foreign_key =>

Hi, I''m trying to figure the most efficient way to model the following. I can think of at least two ways to relate the tables but from a client/server perspective! I''m wondering how to best (and elegantly)relate them from an AR perspective. A project has many people, A person can work on many projects at any time, A project has many roles, A role is performed by a person, A