similar to: newbie: Single Table Inheritance

FIXED: Transaction is a reserved word, and it cannot be used even though I put it into its own module. So my guess is Transactions::Transaction still somehow got resolved to the Rails internal Transaction class. Renamed the Transaction (and its subclasses) to Transact and it works fine now. Thanks! -- cmdjohnson On Sat, Jun 9, 2012 at 3:08 AM, Commander Johnson

Hello, I stumble upon this error when loading a subclass of the Transaction class. For full details, see the pastie: http://pastie.org/4053678 Error message: ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: ''Transactions::DummyDdnlTransaction''. This error is raised because the column ''type'' is reserved for

Hey folks, I''m trying to keep track of couple of different kinds of "entities" in my rails app: "people", "organizations", and "committees". I have a single Entities table in the database, and I''m using Single Table Inheritance to keep the different subclasses in the same table, with a field "type". My problem comes when

Hi, How do I relate a table to another when one of the models uses single table inheritance? Will this even work? This is the specific problem I am having: There''s an "Address" model with "ShippingAddress" and "BillingAddress" as subclasses. It looks like this: class Address < ActiveRecord::Base End class ShippingAddress < Address has_one :order

I''m getting some weirdness trying to use a select widget to choose the type from a collection of three objects sharing a database table via single-table inheritance (STI). I''d be grateful for any advice on whether it''s a bug or a feature, if a feature why and how I can more easily do what I''m trying to do. So I have the usual STI setup, with a

I''m having a class called Person, with subclasses as goalkeeper, forward, defender. Now a person can be a forward as well as a defender or a goalkeeper. I want to use single table inheritance like : class Goalkeepr < Person end And not have multiple boolean columns like in my people table like is is_goalkpeer, is_forward, is_defender. How do I go about it ? Thanks, Pratik -- rm

I''ve been searching the web, wikis, and more, and I haven''t turned up examples of how to have multiple entities in a single-table inheritance related to anything. I have an addresses table, but multiple entities can have Addresses: both Person (which has 2 addresses) and Retailer. I''ve been told that I need to use single-table inheritance, and this was my attempt:

Hi Everyone, I hope I get some feedback on my question. Here it goes. I have a situation here, I have a company table and then using Single Table inheritance it is of 3 types: class Company < ActiveRecord::Base end class Vendor < Company end class Customer < Company end class Agent < Company end Now I have a active record Association class QuoteSheet < ActiveRecord::Base

Single Table Inheritance question. class Employee is the master model (table is employees) class Cog is the subclass model, and uses single table inheritance to be a subclass of Employee class Blurfl is a normal model (table is blurfls) in cog.rb, I have something like: def foo Cog.find(:all, :include=>''blurfl'', :condition=> ["cogs.status =

Hello, I''m having a heck of a time getting Single Table Inheritance to work in my app. I have the following models and have scaffolded out Person and Contact. person.rb class Person < ActiveRecord::Base has_many :contacts end client.rb class Client < Person end contact.rb class Contact < ActiveRecord::Base belongs_to :person end phone.rb class Phone < Contact end In

Some how I''m getting NameError: uninitialized constant when accessing a child models that inherits form the parent model. However, if I access the parent model first, then the child model is resolved. What am I doing wrong? My steps are below... Thanks, Francis. > ./script/generate model Blah type:string class CreateBlahs < ActiveRecord::Migration def self.up create_table

Hello all, I am a bit hung up. I have created a simple table (pluralized) named aircrews and I have edited my database.yml file to point to the database that I created and that is holding the table aircrews. I have gone through the depot tutorial in the Agile book and when I have run the scaffolding command for the depot app all has worked fine for the table products. Now when I run the ruby

I have a Field class: class Field < ActiveRecord::Base belongs_to :field_type end with it''s table: fields: id field_type_id name ordering every field has a type class FieldType < ActiveRecord::Base end stored in the field_types table field_types: id name class_name for each field type, there''s a subclass of Field that do whatever special

I have a people table with four types of people: clients, spouses, children, and others all setup using single-table inheritance with a foreign key back to a household record. A Household has_one client and spouse, and has_many children and others. I want to use a single "Household.find(@session [:household_id], :include => [:client, :spouse, :children, :others])"

Hi, what is the RoR way of handling a recursive table? I''m a little confused how to set this up in the model. My example is the employee table. Employees holds a list of employees, and a recursive link to itself to show org structure. Employees -------- id (pk) name type -- this is for single table inheritance... ie supervisor, manager, minion employee_id -- (fk''s to

Hi! Is there anywhere on the net a sample of some basic app (with actions like create, edit etc.) that uses single table inheritance? I''m trying to create (my first) app with 2 different types of users and while it basically works, my code is quite messy. I.e. i''ve got 2 forms, each for different type of user. To use the same rhtml files for creating and editing the user, i

I''m using wrap_parameters and ActiveRecord''s single table inheritance pattern. I have a base class "Entity", and two types derived from it: "Person" and "Group". What I''d like to do is PUT a Person or Group object to EntityController#update. Unfortunately, this causes wrap_parameters to wrap for type "Entity" instead of

in a single table inheritance model, rails will automatically set the scope for acts_as_list to the ''type'' field as well as any other scope conditions we provide. Is there a way to disable this? i want to use STI but I want acts_as_list to disregard the class type when getting/setting positions. thanks alan

I''m using Single Table Inheritance in my rails application, and I was wondering if it''s possible to create controllers and views for the STI classes. I''ve currently tried this with a simple Item and an ActionItem class, but Rails complains that it can''t route to the controller for ActionItem. Is there something special I need to do to set this up? Will every

I have a question about where to decorate my classes with acts_as_list. I am using single table inheritance and i have a base class LookupItem. There are 5 child classes: Priority, Probability, RiskRating, Status, and RiskManagementItem. Each of these 5 items needs to act as a list. Should I use acts_as_list on each child class or should it go on the parent LookupItem class? I''m