activerecord 3.2.2 association issues with multiple connections - mysql

Question

can somebody point out some problems that might occur when im having association problem like this?
my classes are:
class BaseDB < ActiveRecord::Base
self.abstract_class = true
def self.load_configs
self.configurations = YAML::load(load_file)
end
def self.load_file
File.open(file_path)
end
def self.file_path
File.join(File.expand_path('../../../',__FILE__),"config/database.yml")
end
end
class User < BaseDB
has_many :things
end
class Thing < BaseDB
belongs_to :user
end
when I try to run in the console
>BaseDB.load_configs
=> {"my_connection"=>{"database"=>"db2", "adapter"=>"mysql2", "password"=>secret, "host"=>"localhost", "user"=>"root"}, "my_other_connection_test"=>{"database"=>"db1", "adapter"=>"mysql2", "password"=>secret, "host"=>"localhost", "user"=>"root"}}
> BaseDB.establish_connection :my_connection
=> #<ActiveRecord::ConnectionAdapters::ConnectionPool:0x7f69c7a38b98 #mon_entering_queue=[], #automatic_reconnect=true, #mon_count=0, #queue=#<MonitorMixin::ConditionVariable:0x7f69c7a38a58 #waiters=[], #monitor=#<ActiveRecord::ConnectionAdapters::ConnectionPool:0x7f69c7a38b98 ...>>, #connections=[], #mon_owner=nil, #reserved_connections={}, #spec=#<ActiveRecord::Base::ConnectionSpecification:0x7f69c7a49718 #adapter_method="mysql2_connection", #config={:password=>"####", :adapter=>"mysql2", :user=>"root", :host=>"localhost", :database=>"db2"}>, #timeout=5, #size=5, #mon_waiting_queue=[]>
> user = User.first
=> #<User id: 8325205, firstname: "goryo", middlename: nil, creeated_at: "2012-03-20 18:02:58", updated_at: "2012-03-20 18:02:58">
> user.things
then i get these errors:
ActiveRecord::ConnectionNotEstablished: ActiveRecord::ConnectionNotEstablished
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in `retrieve_connection'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:75:in `connection'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:54:in `initial_count_for'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:12:in `initialize'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:29:in `call'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:29:in `default'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:29:in `[]'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:29:in `aliased_name_for'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/alias_tracker.rb:17:in `aliased_table_for'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/join_helper.rb:15:in `construct_tables'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/join_helper.rb:14:in `each'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/join_helper.rb:14:in `construct_tables'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/association_scope.rb:37:in `add_constraints'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/association_scope.rb:31:in `scope'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/association.rb:98:in `association_scope'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/association.rb:87:in `scoped'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/collection_association.rb:380:in `find_target'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/collection_association.rb:333:in `load_target'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/collection_proxy.rb:44:in `__send__'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/collection_proxy.rb:44:in `load_target'
from /usr/lib/ruby/gems/1.8/gems/activerecord-3.2.2/lib/active_record/associations/collection_proxy.rb:87:in `method_missing'
from /usr/lib/ruby/1.8/irb.rb:310:in `output_value'
from /usr/lib/ruby/1.8/irb.rb:159:in `eval_input'
from /usr/lib/ruby/1.8/irb.rb:271:in `signal_status'
from /usr/lib/ruby/1.8/irb.rb:155:in `eval_input'
from /usr/lib/ruby/1.8/irb.rb:154:in `eval_input'
from /usr/lib/ruby/1.8/irb.rb:71:in `start'
from /usr/lib/ruby/1.8/irb.rb:70:in `catch'
from /usr/lib/ruby/1.8/irb.rb:70:in `start'

Answer 1

ohh all I needed was to establish ActiveRecord::Base connection as an initial inorder to connect to other tables, it works!
ActiveRecord::Base.establish_connection :my_connection
since my basedb is an abstract class, when you establish a connection ActiveRecord::Base w/c is the superclass doesnt have a connection yet you can check it out
>BaseDB.load_configs
>BaseDB.establish_connection :my_connection
try to query
>User.all
>BaseDB.connected?
=>returns true
>ActiveRecord::Base.connected?
=>nil
for more info about the implementation you can check this out http://api.rubyonrails.org/classes/ActiveRecord/Base.html