single-table-inheritance

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Can nested attributes be used in combination with inheritance?

I have the following classes: Project Person Person > Developer Person > Manager In the Project model I have added the following statements:[详细]

2022-12-25 01:18 分类：问答
Rails single table inheritance/subclass find condition in parent

I have a table called Users (class User < ActiveRecord::Base) and a subclass/STI of it for Clients (class Client < User).[详细]

2022-12-24 19:52 分类：问答
Virgin STI Help

I am working on a horse racing application and I\'m trying to utilize STI to model a horse\'s connections. A horse\'s connections is comprised of his owner, trainer and jockey. Over time, connections[详细]

2022-12-23 21:28 分类：问答
mongo mapper with STI with more than one type?

I have a series of models all which inherit from a base model Properties For ex开发者_如何学Goample Bars, Restaurants, Cafes, etc.[详细]

2022-12-23 04:32 分类：问答
Hibernate: Parent/Child relationship in a single-table

I hardly see any pointer on the following problem related to Hibernate. This pertains to implementing inheritance using a single database table with a parent-child[详细]

2022-12-23 01:25 分类：问答
Avoiding STI in Rails

class User < ActiveRecord::Base has_one :location, :dependent => :destroy, :as => :locatable has_one :ideal_location, :dependent => :destroy, :as => :locatable[详细]

2022-12-20 23:32 分类：问答
TypeError when trying to use observers and STI

I\'m trying to follow along with the thread on implementing an achievement system (located at How to implement an achievement system in RoR), and am running into a TypeError when the object is saved a[详细]

2022-12-20 15:40 分类：问答
Different routes but using the same controller for model subclasses in Rails

I have a Model Property which has subclasses using STI, and which I would like all to use the same controller with only different view partials de开发者_高级运维pending on the subclass.[详细]

2022-12-20 14:48 分类：问答
Saving and retrieving inherited types with LINQtoSQL and Business Objects

I have an abstract EventBase class and some inherited event types, along with an Event class.Each event type has its own unique columns.[详细]

2022-12-20 07:28 分类：问答
Spring: controller inheritance using @Controller annotation

I\'d like to be able to create a base controller in my Spring app that, among other things, determines if a user is a registered user or not.This base controller, following the template design pattern[详细]

2022-12-18 00:45 分类：问答