search for: has_a

Hello, Let''s say I have a model for a "house". Each house has_a "city", which in turn has_a "state" which in turn has_a "country". The objective is to retrieve all houses in a given state, say "Massachusetts". Being new to Ruby on Rails what I like is that things that should be simple usually are simple, and since we hav...

I''ve tried tackling this many ways on my own and can''t find a good solution: Breaking it down to something simplier... Venue has one address Person has one address Address belongs to state Assuming I don''t want to do tables for venue_addresses and person_addresses. What is the best way to model this using rails... big thing here is i want to be able to reuse a

I am new to RoR, but totally sold to the concepts, so I have decided to use RoR to develop a web client to our Oracle-based software that our customers today use with a Windows client. At first we will develope simple things like registering to receive email newsletters, and registering/updating your name, address and telephone etc. Eventually we hope to do a more full-bodied web-side client.

Hello, I found an interesting ER diagram on the "Module: ActiveRecord::Associations::ClassMethods" page of the Rails Framework Documentation : http://ar.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html At the beginning we can read ? Associations are a set of macro-like class methods for tying objects together through foreign keys. They express relationships like

When I explain RoR to someone I don''t have a convincing argument that explains why everything is so automatic and transparent, but relationships have to be encoded by hand in models. That shows I don''t understand well that part of AR. There''s the argument that says that not all databases offer metadata about foreign keys, but the natural question then is that,