When defining a relationship, there is a property on the related model (not a DB column), but I would like to sort by it (in the @OrderBy annotation). I have a base model that is extended using si...

While working on Rails 2.3.18 to Rails 3.2.x migration I am facing name issue in type column Here is the relation that is defined. app/models/reservation.rb class Reservation end class Reservat...

(See below for link to sample project) WHAT I HAVE WORKING: I have many user types which I am handling using Single Table Inheritance in Rails, e.g.: class User < ActiveRecord::Base self.inh...

I have a class extending an existing entity with single table strategy (which I can't change). I want to use UniqueConstraint for that entity so I tried: @Entity @Table(name = "t_document") public...

I have two types of classes: BaseUser < ActiveRecord::Base and User < BaseUser which acts_as_authentic using Authlogic's authentication system. This inheritance is implemented using ...

I have this error while trying to list objects from database with hibernate Criteria decorated with simple Restrictions Criteria criteria = session.createCriteria(Licence.class); criteria.add(Rest...

I have 3 models using Single Table Inheritance. They are for three different types of items that can be purchased on our website. The items are placed into categories, so the Category model has a p...

We use single table inheritance for every table in our application. This allows different instances of the same application stack to work with the same DAOs while their entities might differ slight...

I'm working on a Rails 3.2 app where I use Devise for authentication. I decided to try single table inheritance for managing user roles, but I quickly ran into a problem. I currently have three Use...

This is my base/parent entity, setup so its children are using their own tables. /** * @ORM\Entity * @ORM\Table(name="layer_object") * @ORM\InheritanceType("JOINED") * @ORM\DiscriminatorColum...

I want to use Single Table Inheritance using a column other than type. According to the Rails documentation - http://api.rubyonrails.org/classes/ActiveRecord/Base.html, I can do this by modifying A...

I have following kinds of classes for hibernate entity hierarchy. I am trying to have two concrete sub classes Sub1Class and Sub2Class. They are separated by a discriminator column (field) that is ...

I am having a problem getting Devise to work the way I'd like with single table inheritance. I have two different types of account organised as follows: class Account < ActiveRecord::Base dev...

I am working on a Symfony2/Doctrine app which uses class-table-inheritance (http://docs.doctrine-project.org/en/2.0.x/reference/inheritance-mapping.html#class-table-inheritance) to manage Complaint...

I am wondering if the counter_cache would work in single table inheritance. For these models: class User has_many :questions end class Question belongs_to :user, :counter_cache => true end ...

I have comments and articles, both are votable. So, basically I've three entities, Article, Comment and Vote. After some reading on Single Table Inheritance in Doctrine2 reference manual, it seem...

I have the following classes: Project Person Person > Developer Person > Manager In the Project model I have added the following statements: has_and_belongs_to_many :people accepts_nested_...

Im currently mapping a class hierarchy using the single table inheritance strategy (it is not possible for me to use joined). This hierarchy might look like this: class Parent(Base): __tablename_...

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 patt...

In my system I have STI already defined. Dog inherits from Animal, in the animals table there's a type column with the value "Dog". Now I want to have SpecialDog inherit from dog, just to modify t...

I am using rails 3.0.9 and devise for authentication. Now I'm trying to use single table inheritance because I need to use polymorphism, so I have two classes: UserType1 and UserType2, which inheri...

I've read some of Bill Karwin's answers about single table inheritance and think this approach would be good for the setup I am considering: Playlist -------- id AUTO_INCREMENT title TeamPlaylist...

I have problem with my code class Post < ActiveRecord::Base end class NewsArticle < Post has_many :comments, :as => :commentable, :dependent => :destroy, :order => 'created_at' en...

I have a model class Post include Mongoid::Document include Mongoid::Timestamps embeds_one :comment end and I have comment class class Comment include Mongoid::Document include Mongoid::T...

I'm trying to find the 10 most recent comments on photos so I can integrate them into an activity feed on my Rails 3.0.3 application. I've got a Photo model, which inherits from an Upload model us...