set_belongs_to_association_for question?

rubyonrails-core
1

Hi, Lets suppose a Resource and Relation model exist and Article and a Comment inherit from Resource and an ArticleComment defines a relationship. When everything is setup and you create your instances and save them this is what is saved in the database.

RESOURCES

id | description | type 14 | NULL | SpotArticle 15 | NULL | Comment

RELATIONS

id | source_resource_id | target_resource_id | type source_resource_type | target_resource_type 4 | 14 | 15 |

ArticleComment | SpotArticle | Comment

At least this is what I would like to have in the database. But the source_resource_type and target_resource_type both contain "Resource" instead. Looking at the rails code I saw in "ActiveRecord::Associations::AssociationProxy.set_belongs_to_association_for" that the Class.base_name is stored instead of the Class.name and this results in the base class name Resource.

Is there anybody who knows why the Class.base_name is used here? Is there a better way of doing this? Without having to override set_belongs_to_association_for?

Mehmet

Setup stuff

def self.up   create_table :relations do |t|      t.integer :source_resource_id, :target_resource_id      t.string :source_resource_type, :target_resource_type, :type      t.timestamps   end

  create_table :resources do |t|      t.string :type; :description      t.timestamps    end end

class Resource < ActiveRecord::Base end

class Relation < ActiveRecord::Base end

class Article < Resource end

class SpotArticle < Article     has_many :article_comments, :as => :source_resource, :dependent => :destroy end

class Comment < Resource     has_many :article_comments, :as => :target_resource, :dependent => :destroy end

class ArticleComment < Relation     belongs_to :source_resource, :polymorphic => true, :class_name => 'SpotArticle'     belongs_to :target_resource, :polymorphic => true, :class_name => 'Comment' end