Używam active_delegate do wielokrotnego połączenia w Railsach. Tutaj używam mysql jako master_database dla niektórych modeli i postgresql dla niektórych innych modeli.

Problem polega na tym, że gdy próbuję uzyskać dostęp do modeli mysql, otrzymuję błąd poniżej! Ślad stosu pokazuje, że nadal używa adaptera postgresql, aby uzyskać dostęp do moich modeli mysql!

RuntimeError: ERROR C42P01  Mrelation "categories" does not exist   P15 F.\src\backend\parser\parse_relation.c  L886    RparserOpenTable: SELECT * FROM "categories" 

STACKTRACE
===========
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract_adapter.rb:212:in `log'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:507:in `execute'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:985:in `select_raw'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:972:in `select'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all_without_query_cache'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/query_cache.rb:81:in `cache_sql'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/base.rb:661:in `find_by_sql'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/base.rb:1553:in `find_every'
d:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/base.rb:615:in `find'
D:/ROR/Aptana/dedomenon/app/models/category.rb:50:in `get_all_with_exclusive_scope'
D:/ROR/Aptana/dedomenon/app/models/category.rb:50:in `get_all_with_exclusive_scope'
D:/ROR/Aptana/dedomenon/app/controllers/categories_controller.rb:48:in `index'

tutaj jest mójdatabase.yml plik

postgre: &postgre
  adapter: postgresql
  database: codex
  host: localhost
  username: postgres
  password: root
  port: 5432  

mysql: &mysql
  adapter: mysql
  database: project
  host: localhost
  username: root
  password: root
  port: 3306  

development:
  <<: *postgre

test:
  <<: *postgre

production:
  <<: *postgre

master_database:
  <<: *mysql

i mójmaster_database model jest taki

class Category < ActiveRecord::Base

  delegates_connection_to :master_database, :on => [:create, :save, :destroy]

end

Każdy ma jakieś rozwiązanie?