If I have two models that are guaranteed to have a one-to-one correspondence, i.e. if one is created, I will always also need the other, and if one is deleted, I will also want to get rid of the other
Given a collection of named Foos from ActiveRecord, why does Array#include? not seem to call Foo.== but yet index does?
I have some models all linked together in memory (parent:child:child:child) and saved at the same time by saving the top-most parent.This works fine.
It\'s driving me crazy. I have 3 models. User, Photo, Comments. Here is what I want to do. A user has many photos and comments
I\'m building a Rails app that has Etsy.com style functionality.In other words, it\'s like a mall.There are many buyers and many sellers.
Is it possible to have multiple has_many :through relationships that pass through each other in Rails?I received the suggestion to do so as a solution for another question I posted, but have been unab
I thought it was alias for simple foreign key relation,but seems not. 开发者_高级运维Can you take MySQL as an example what is association relation?
I have a Proposal model that belongs to Project: class Proposal < ActiveRecord::Base belongs_to :project
I\'m have quite a problem while trying to make a list (for the admin section) of HABTM relations. Here\'s the deal:
How would you do a many-to-many association with MongoDB? For example; let\'s say you have a Users开发者_运维知识库 table and a Roles table. Users have many roles, and roles have many users. In SQL l
加载中,请稍侯......