similar to: has_many and has_and_belongs_to conflit

Hi, I have a has_and_belongs_to relationship between 2 objects, order and product. I''m getting a foreign key violation when trying to delete Order. Is there a special way of deleting orders without deleting products? ("has_many" has :dependant => :delete_all.... does "has_and_belongs_to" have something similar) Trying: Order.delete_all Getting: Mysql::Error:

I have an inner join query that Action Record can''t seem to pull off conventionally, so I''m trying to use :finder_sql to utilize an sql query that works beautifully in SQL. The problem is, when I try to call the method, I get the following: private method `gsub'' called for #<Array:0x267de04> Here is my has_many code: has_many :mod_privileges,

I have a User model, a Post model, and an Interest model: User has_many posts through interests User has_many interests, dependent destroy Post has_many users through interests has_many interests, dependent destroy Post has_many interests Interest belongs to Post Interest belongs to User Application_Controller is as follows: class ApplicationController < ActionController::Base before_filter

Hi, I have a self-referential has_many :through relationship setup to track relationships between users. Basically relationships are modeled as a join table with an extra column ''relation''. create table relationships ( user_id integer unsigned not null, friend_id integer unsigned not null, relation char(1) not null, ) --- relations --- f = friend r = request to

I''m pleased to announce a new plugin for Rails: Userstamp. You can read my blog post at http://www.delynnberry.com/articles/2006/01/20/userstamp-plugin and/or read all about it at the perminant page http://www.delynnberry.com/pages/userstamp. Any comments or suggestions for improvement are much appreciated. -- DeLynn Berry delynn@gmail.com http://www.delynnberry.com A dump of the Readme

Hi all, I have the following inside of an AR class definition: relationships=ActiveRecord::Base.connection.select_all(my_relationships_sql) relationships.each do |relationship| has_many RelatedItems, :class_name => relationship[''RelatedClass''], :foreign_key => relationship[''ForeignKey''] end This kind of works, but how can I assign the name of the

Hello all. I am trying to create a self-referential has_many :through. I used the following site as a guide http://blog.hasmanythrough.com/articles/2006/04/21/self-referential-through but it still doesn''t appear to be working. I have two models. Person and Relationship. A person has many contacts (Which is another person) through relationships class Person < ActiveRecord::Base

I have the following model structure setup. class User < ActiveRecord::Base end class Parent < User has_many :relationships has_many :children, :class_name => "Student", :through => :relationships, :conditions => "related_as = ''parent''" end class Student < User has_many :relationships

Hi, I am working on a scheduling app and I have a perpelextion (new word). I am wondering if the problem is my data model I have Users. Users can create Events. Users can be invited to Events created by other Users. So... user.rb class User < ActiveRecord::Base has_many :invitations # invitations to other users'' events has_many :events, :through => :invitations # all events

I have two classes: a Widget and a User. The User has an id that is referenced in two places on the Widget: owner_id and operator_id. How should I structure that reference for has_many? Thanks folks - I appreciate any help on this. --David --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails:

Having a devil of a time finding records in a self-referencing has_many table relationship. Everything is working find looking at the has_many and the belongs_to relationship. But, when I try to find all "orphans", records that are neither a parent nor a child, I can not find a query that work in ActiveRecord. This query works in MySQL: SELECT * FROM templates LEFT JOIN templates

I have searched for days for an example that demonstrates what i would like to do, and this morning i thought i''d worked it out, but no....here''s what i have: Controller ========== class ProfilesController < ApplicationController def friends current_user.profile.friends end def list_friends @profile_pages, @profiles = paginate( friends, :per_page => 10) end end

I have the ability to send email to a user if a certain user has requested interest in their product. In my email I want to include certain information that is pulled from users but at the moment I am getting errors because it states that they are undefined despite these lines being used elsewhere in my application. I shall copy the email below and anything between the <% %> is what I wish

Hi, our app is a situation where users can upload files and also mark files uploaded by other users as their favorites. So for the favorites we are using a simple many-to-many with a tie table. So in attempting that it looks like class User < ActiveRecord::Base has_and_belongs_to_many :media_file has_many :media_file end class MediaFile < ActiveRecord::Base

This is my first question to the Forum. I’ve set up these associations: class Playlist < ActiveRecord::Base … has_many :playlists_tracks, :dependent => :destroy has_many :track_ones, :through => :playlists_tracks, :source => :track has_many :track_twos, :through => :playlists_tracks, :source => :track end class Track < ActiveRecord::Base … has_many

I am trying to do a simple find through the current_user but get an exception. Either someone spiked my Starbucks coffee and I am screwing up all over the place or there is something wrong. def index @league = current_user.leagues.find(13) end # Error LocalJumpError in Admin/schedule todosController#index no block given If I pass a block to it it works fine, but it is just messy: =====

I have a model "Childmodel" that belongs_to two other models "Parent1" and "Parent2". "Parent1" "has_many :childmodels, :order => :positionp1" and "Parent2" "has_many :childmodels, :order => :positionp2". i.e. The child is independently positioned within each of its parents. This works fine and gets me the useful

I wonder if you can have more than one has_many :through association between 2 models. For example... I have a model Teacher and a model Class Now, 1 Teacher works in many Classes, right?. So I need a join model like class Work < ActiveRecord::Base belongs_to :teacher belongs_to :class end But I also would like to know if a teacher CAN teach a class before I

I have a problem that surfaced in my attempt to upgrade my application to Rails 1.1. We have a STI model on the "belongs_to" side of a has_many/belongs_to relationship. All my unit tests for this model pass, and the relationships all seem to work fine. But in my functional tests, I''m getting errors. I''ve traced it back into the call to the has_many

I know this has been rehashed many times, but I don''t get it. I can''t find it documented to were I understand all the parts. I can make this work using Rails database design conventions, but in this case I am not able to do that. I find examples, but the ones I find do not follow the conventions. They also do not give enough information to understand what is going on. In