rails: self.table_name problems with 'find_or_create_by_'

Given my model looks like this:

class APN::Device < APN::Base
  self.table_name = 'apn_devices'

  has_many :notifications, :class_name => 'APN::Notification'

With 1 column token:string. Its base class looks like this:

module APN
  class Base < ActiveRecord::Base # :nodoc:

    # def self.table_name # :nodoc:
    #    self.to_s.gsub("::", "_").tableize
    # end

  end
end

I already tried commenting in/out the self.table_name method and the self.table_name = calls in the child classes.

Then I can use this method to find a Device by token:

ruby-1.9.2-p290 :004 > APN::Device.find_by_token('xxxx xxxx xxxx xxxx')
  APN::Device Load (0.5ms)  SELECT "apn_devices".* FROM "apn_devices" WHERE "apn_devices"."token" = 'xxxx xxxx xxxx xxxx' LIMIT 1
 => nil 

But once I try to use find_or_create_by_token:

ruby-1.9.2-p290 :005 > APN::Device.find_or_create_by_token('xxxx xxxx xxxx xxxx')
  APN::Device Load (0.5ms)  SELECT "apn_devices".* FROM "apn_devices" WHERE "apn_devices"."token" = 'xxxx xxxx xxxx xxxx' LIMIT 1
ActiveRecord::StatementInvalid: PGError: ERROR:  relation "bases" does not exist
LINE 4:              WHERE a.attrelid = '"bases"'::regclass
                                        ^
:             SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"bases"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum

    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:1106:in `async_exec'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:1106:in `exec_no_cache'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:650:in `block in exec_query'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:649:in `exec_query'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:1231:in `column_definitions'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/postgresql_adapter.rb:845:in `columns'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/schema_cache.rb:12:in `block in initialize'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/model_schema.rb:228:in `yield'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/model_schema.rb:228:in `default'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/model_schema.rb:228:in `columns'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/model_schema.rb:248:in `column_names'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_methods.rb:44:in `block in define_attribute_methods'
    from <internal:prelude>:10:in `synchronize'
... 3 levels...
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_methods.rb:41:in `define_attribute_methods'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_methods.rb:145:in `respond_to?'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_assignment.rb:81:in `block in assign_attributes'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_assignment.rb:78:in `each'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/attribute_assignment.rb:78:in `assign_attributes'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/relation/finder_methods.rb:290:in `block in find_or_instantiator_by_attributes'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/base.rb:497:in `initialize'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/relation/finder_methods.rb:289:in `new'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/relation/finder_methods.rb:289:in `find_or_instantiator_by_attributes'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/dynamic_matchers.rb:47:in `method_missing'
    from (irb):5
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:47:in `start'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:8:in `start'
    from /Users/ened/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

All of this is happening with Rails3.2 and Ruby1.9.2. bundle list: Gems included by the bundle:

  * RedCloth (4.2.9)
  * ZenTest (4.5.0)
  * actionmailer (3.2.1)
  * actionpack (3.2.1)
  * activemodel (3.2.1)
  * activerecord (3.2.1)
  * activeresource (3.2.1)
  * activesupport (3.2.1)
  * apn_on_rails (0.3.1rails3 fdbe81b)
  * arel (3.0.0)
  * autotest (4.4.6)
  * autotest-growl (0.2.16)
  * autotest-rails (4.1.1)
  * bcrypt-ruby (3.0.1)
  * builder (3.0.0)
  * bundler (1.0.21)
  * cancan (1.6.7)
  * capistrano (2.9.0)
  * carrierwave (0.5.8)
  * coffee-rails (3.2.2)
  * coffee-script (2.2.0)
  * coffee-script-source (1.2.0)
  * configatron (2.9.0)
  * devise (2.0.0)
  * diff-lcs (1.1.3)
  * erubis (2.7.0)
  * exception_notification_rails3 (1.2.0)
  * execjs (1.3.0)
  * ffi (1.0.11)
  * guard (1.0.0)
  * guard-rspec (0.6.0)
  * haml (3.1.4)
  * haml-rails (0.3.4)
  * highline (1.6.11)
  * hike (1.2.1)
  * i18n (0.6.0)
  * irwi (0.4.1 b78694c)
  * journey (1.0.1)
  * jquery-rails (2.0.0)
  * json (1.6.5)
  * libv8 (3.3.10.4)
  * machinist (2.0)
  * mail (2.4.1)
  * metaclass (0.0.1)
  * mime-types (1.17.2)
  * mini_magick (3.4)
  * mocha (0.10.3)
  * multi_json (1.0.4)
  * net-scp (1.0.4)
  * net-sftp (2.0.5)
  * net-ssh (2.3.0)
  * net-ssh-gateway (1.1.0)
  * nifty-generators (0.4.6)
  * orm_adapter (0.0.6)
  * pg (0.12.2)
  * polyamorous (0.5.0)
  * polyglot (0.3.3)
  * rack (1.4.1)
  * rack-cache (1.1)
  * rack-ssl (1.3.2)
  * rack-test (0.6.1)
  * rails (3.2.1)
  * rails_autolink (1.0.5)
  * railties (3.2.1)
  * rake (0.9.2.2)
  * ransack (0.6.0)
  * rdoc (3.12)
  * rspec (2.8.0)
  * rspec-core (2.8.0)
  * rspec-expectations (2.8.0)
  * rspec-mocks (2.8.0)
  * rspec-rails (2.8.1)
  * rubyzip (0.9.5)
  * sass (3.1.12)
  * sass-rails (3.2.4)
  * simplecov (0.5.4)
  * simplecov-html (0.5.3)
  * sprockets (2.1.2)
  * sqlite3 (1.3.5)
  * sqlite3-ruby (1.3.3)
  * subexec (0.2.1)
  * therubyracer (0.9.9)
  * thor (0.14.6)
  * tilt (1.3.3)
  * treetop (1.4.10)
  * tzinfo (0.3.31)
  * uglifier (1.2.3)
  * warden (1.1.0)
  * yamler (0.1.0)

I didn’t test it further, in order to pinpoint it to the postgresql adapter. It seems to me more like a find_or_create_by_ issue?