I've isolated it to 1 file. If you remember, the line that causes the error is:

> @friends = @person.current_friends.order('RAND()').limit(5)

but, I found that if I uncomment define_index in all files but 1, it works 
fine. The file is review.rb

Here are the associations:

  belongs_to :person, :counter_cache => true
  belongs_to :wine

in person.rb
  has_many :reviews, :dependent => :destroy
  has_many :wines, :through => :reviews

Not sure if it makes any difference, but wine.rb also has a define_index block.

wine.rb:
    has_many :reviews, :dependent => :destroy
    has_many :user_reviews, :class_name => 'Review', :include => [:person]


On 2012-09-06, at 11:06 PM, Ahmed El-Daly <[email protected]> wrote:

> I don't know what to say Pat. I've mutilated the gemfile to the absolute bare 
> minimum, and it's still happening:
> 
> source 'http://gemcutter.org'
> source 'http://gems.github.com'
> 
> gem 'rails', '3.2.6'
> 
> gem 'mysql2'
> # gem 'delayed_job_active_record'
> # gem 'geokit'
> # gem 'geokit-rails3'
> # gem 'email_veracity'
> # gem 'uuid'
> # gem 'acts_as_reportable'
> # gem 'acts_as_list'
> gem 'authlogic'
> # gem 'airbrake'
> # gem 'cmess'
> # gem 'hpricot'
> # gem 'simple-rss'
> gem 'haml'
> # gem 'acts_as_tree'
> # gem 'oink'
> # gem 'attachment_fu', :git => 
> 'https://github.com/aeldaly/attachment_fu.git', :branch => 'master'
> # gem 'aws-s3'
> # gem 'will_paginate', '~> 3.0'
> # gem 'mongoid', '~> 3.0.0'
> # gem 'activerecord-import'
> # gem 'money'
> # gem 'make_resourceful'
> # gem 'daemons-rails'
> gem 'thinking-sphinx', '2.0.10'
> # gem 'rest-client'
> # gem 'twitter'
> # gem 'jquery-rails', '>= 0.2.6'
> # gem 'newrelic_rpm'
> # gem 'ey_config'
> 
> # rails components moved to gems
> # gem 'prototype-rails'
> # gem 'dynamic_form' # provides error_messages and the like
> # gem 'auto_complete', :git => 'https://github.com/Sharagoz/auto_complete.git'
> 
> # http://crimpycode.brennonbortz.com/?p=42
> # gem 'escape_utils'
> 
> group :development do
>  # gem 'thin'
>  # gem 'rails-footnotes', '>= 3.7.5.rc4'
> end
> 
> group :test do
>  #gem 'fixture_replacement'
> end
> 
> group :development, :test do
>  # gem 'ZenTest'
>  # gem 'autotest-rails'
>  # gem 'rspec', '2.11.0'
>  # gem 'rspec-rails', '2.11.0'
>  # gem 'factory_girl'
>  # gem 'factory_girl_rails'
>  # gem 'forgery'
>  # gem 'database_cleaner'
>  #gem 'libnotify'
> end
> 
> group :assets do
>  gem 'uglifier'
> end
> 
> Look, there's almost nothing left. I can't unfortunately grant you access to 
> the project. Would you be open to a Skype chat and I can share my screen with 
> you?
> 
> This project is supposed to go live before the end of the month and this is 
> the only thing that's in my way.
> 
> Thanks,
> Ahmed
> 
> On 2012-09-06, at 5:51 PM, Pat Allan <[email protected]> wrote:
> 
>> Something's playing havoc with the associations, but I'm a little confused 
>> as to why it'd be Thinking Sphinx, given you're not even using associations 
>> within your index definition. Do you have any other index definitions in 
>> other models?
>> 
>> Also, if it's possible, I'd be keen to reproduce this locally. Is getting 
>> access to your project's source an option? Or would you be able to create a 
>> sample app that also has this issue?
>> 
>> -- 
>> Pat
>> 
>> On 05/09/2012, at 2:37 PM, Ahmed El-Daly wrote:
>> 
>>> Thanks Pat,
>>> 
>>> Here it is:
>>> 
>>> /gems/activerecord-3.2.6/lib/active_record/associations.rb:157:in 
>>> `association'
>>> /gems/activerecord-3.2.6/lib/active_record/associations/builder/association.rb:44:in
>>>  `block in define_readers'
>>> app/controllers/account_controller.rb:58:in `index'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/implicit_render.rb:4:in 
>>> `send_action'
>>> /gems/actionpack-3.2.6/lib/abstract_controller/base.rb:167:in 
>>> `process_action'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/rendering.rb:10:in 
>>> `process_action'
>>> /gems/actionpack-3.2.6/lib/abstract_controller/callbacks.rb:18:in `block in 
>>> process_action'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:513:in 
>>> `_run__1786129847638205132__process_action__213430523744088085__callbacks'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:405:in 
>>> `__run_callback'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:385:in 
>>> `_run_process_action_callbacks'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:81:in 
>>> `run_callbacks'
>>> /gems/actionpack-3.2.6/lib/abstract_controller/callbacks.rb:17:in 
>>> `process_action'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/rescue.rb:29:in 
>>> `process_action'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/instrumentation.rb:30:in 
>>> `block in process_action'
>>> /gems/activesupport-3.2.6/lib/active_support/notifications.rb:123:in `block 
>>> in instrument'
>>> /gems/activesupport-3.2.6/lib/active_support/notifications/instrumenter.rb:20:in
>>>  `instrument'
>>> /gems/activesupport-3.2.6/lib/active_support/notifications.rb:123:in 
>>> `instrument'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/instrumentation.rb:29:in 
>>> `process_action'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/params_wrapper.rb:206:in 
>>> `process_action'
>>> /gems/activerecord-3.2.6/lib/active_record/railties/controller_runtime.rb:18:in
>>>  `process_action'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/agent/instrumentation/rails3/action_controller.rb:34:in
>>>  `block in process_action'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:262:in
>>>  `block in perform_action_with_newrelic_trace'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/agent/method_tracer.rb:242:in 
>>> `trace_execution_scoped'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:257:in
>>>  `perform_action_with_newrelic_trace'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/agent/instrumentation/rails3/action_controller.rb:33:in
>>>  `process_action'
>>> /gems/actionpack-3.2.6/lib/abstract_controller/base.rb:121:in `process'
>>> /gems/actionpack-3.2.6/lib/abstract_controller/rendering.rb:45:in `process'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal.rb:203:in `dispatch'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal/rack_delegation.rb:14:in 
>>> `dispatch'
>>> /gems/actionpack-3.2.6/lib/action_controller/metal.rb:246:in `block in 
>>> action'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/routing/route_set.rb:73:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/routing/route_set.rb:73:in 
>>> `dispatch'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/routing/route_set.rb:36:in `call'
>>> /gems/journey-1.0.4/lib/journey/router.rb:68:in `block in call'
>>> /gems/journey-1.0.4/lib/journey/router.rb:56:in `each'
>>> /gems/journey-1.0.4/lib/journey/router.rb:56:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/routing/route_set.rb:600:in 
>>> `call'
>>> /gems/oink-0.9.3/lib/oink/middleware.rb:17:in `call'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/rack/browser_monitoring.rb:12:in 
>>> `call'
>>> /gems/newrelic_rpm-3.4.1/lib/new_relic/rack/developer_mode.rb:24:in `call'
>>> /gems/mongoid-3.0.5/lib/rack/mongoid/middleware/identity_map.rb:33:in 
>>> `block in call'
>>> /gems/mongoid-3.0.5/lib/mongoid/unit_of_work.rb:39:in `unit_of_work'
>>> /gems/mongoid-3.0.5/lib/rack/mongoid/middleware/identity_map.rb:33:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/best_standards_support.rb:17:in
>>>  `call'
>>> /gems/rack-1.4.1/lib/rack/etag.rb:23:in `call'
>>> /gems/rack-1.4.1/lib/rack/conditionalget.rb:25:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/head.rb:14:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/params_parser.rb:21:in
>>>  `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/flash.rb:242:in `call'
>>> /gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:in `context'
>>> /gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/cookies.rb:338:in 
>>> `call'
>>> /gems/activerecord-3.2.6/lib/active_record/query_cache.rb:64:in `call'
>>> /gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in
>>>  `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/callbacks.rb:28:in 
>>> `block in call'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:405:in 
>>> `_run__3765126766932519170__call__2902207070006020771__callbacks'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:405:in 
>>> `__run_callback'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:385:in 
>>> `_run_call_callbacks'
>>> /gems/activesupport-3.2.6/lib/active_support/callbacks.rb:81:in 
>>> `run_callbacks'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/callbacks.rb:27:in 
>>> `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/reloader.rb:65:in 
>>> `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/remote_ip.rb:31:in 
>>> `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/debug_exceptions.rb:16:in
>>>  `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/show_exceptions.rb:56:in
>>>  `call'
>>> /gems/railties-3.2.6/lib/rails/rack/logger.rb:26:in `call_app'
>>> /gems/railties-3.2.6/lib/rails/rack/logger.rb:16:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/request_id.rb:22:in 
>>> `call'
>>> /gems/rack-1.4.1/lib/rack/methodoverride.rb:21:in `call'
>>> /gems/rack-1.4.1/lib/rack/runtime.rb:17:in `call'
>>> /gems/activesupport-3.2.6/lib/active_support/cache/strategy/local_cache.rb:72:in
>>>  `call'
>>> /gems/rack-1.4.1/lib/rack/lock.rb:15:in `call'
>>> /gems/actionpack-3.2.6/lib/action_dispatch/middleware/static.rb:62:in `call'
>>> /gems/airbrake-3.1.2/lib/airbrake/rack.rb:42:in `call'
>>> /gems/airbrake-3.1.2/lib/airbrake/user_informer.rb:12:in `call'
>>> /gems/railties-3.2.6/lib/rails/engine.rb:479:in `call'
>>> /gems/railties-3.2.6/lib/rails/application.rb:220:in `call'
>>> /gems/rack-1.4.1/lib/rack/content_length.rb:14:in `call'
>>> /gems/railties-3.2.6/lib/rails/rack/log_tailer.rb:17:in `call'
>>> /gems/thin-1.4.1/lib/thin/connection.rb:80:in `block in pre_process'
>>> /gems/thin-1.4.1/lib/thin/connection.rb:78:in `catch'
>>> /gems/thin-1.4.1/lib/thin/connection.rb:78:in `pre_process'
>>> /gems/thin-1.4.1/lib/thin/connection.rb:53:in `process'
>>> /gems/thin-1.4.1/lib/thin/connection.rb:38:in `receive_data'
>>> /gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
>>> /gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
>>> /gems/thin-1.4.1/lib/thin/backends/base.rb:63:in `start'
>>> /gems/thin-1.4.1/lib/thin/server.rb:159:in `start'
>>> /gems/rack-1.4.1/lib/rack/handler/thin.rb:13:in `run'
>>> /gems/rack-1.4.1/lib/rack/server.rb:265:in `start'
>>> /gems/railties-3.2.6/lib/rails/commands/server.rb:70:in `start'
>>> /gems/railties-3.2.6/lib/rails/commands.rb:55:in `block in '
>>> /gems/railties-3.2.6/lib/rails/commands.rb:50:in `tap'
>>> /gems/railties-3.2.6/lib/rails/commands.rb:50:in `'
>>> script/rails:6:in `require'
>>> script/rails:6:in `'
>>> 
>>> I know it doesn't mention thinking-sphinx anywhere, but as I said below, 
>>> commenting out define_index and gem 'thinking-sphinx' in the gem enables 
>>> the app to hum along just fine.
>>> 
>>> Cheers,
>>> Ahmed
>>> 
>>> 
>>> On 2012-09-05, at 7:32 AM, Pat Allan <[email protected]> wrote:
>>> 
>>>> Hi Daly
>>>> 
>>>> Can you provide the full stack trace of the error? It might provide some 
>>>> clues as to how Thinking Sphinx is getting in the way.
>>>> 
>>>> -- 
>>>> Pat
>>>> 
>>>> On 03/09/2012, at 5:50 PM, Daly wrote:
>>>> 
>>>>> Hello,
>>>>> 
>>>>> I'm running thinking-sphinx 2.0.10 in a Rails 3.2 app.
>>>>> 
>>>>> rvm --version
>>>>> rvm 1.14.12 (stable) by Wayne E. Seguin <[email protected]>, Michal 
>>>>> Papis <[email protected]> [https://rvm.io/]
>>>>> 
>>>>> ruby --version
>>>>> ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.2]
>>>>> 
>>>>> This used to be a rails 2.3 app that I'm converting. It always breaks at 
>>>>> the exact same location with:
>>>>> 
>>>>>  undefined method `association_class' for nil:NilClass
>>>>> 
>>>>> The offending line is:
>>>>>  @friends = @person.current_friends.order('RAND()').limit(5)
>>>>> 
>>>>> The association is:
>>>>> 
>>>>> In person.rb:
>>>>>  has_many :current_friends, :source => :friend, :through => :friends
>>>>> 
>>>>> and the sphinx method in person.rb is:
>>>>>  define_index do
>>>>>    indexes :user_name
>>>>>    indexes :id, :as => :id
>>>>>    indexes :email, :as => :email
>>>>>    indexes :account_verified#, :as => :account_verified
>>>>> 
>>>>>    set_property :delta => false
>>>>>  end
>>>>> 
>>>>> 
>>>>> In friend.rb:
>>>>>  belongs_to :person
>>>>>  belongs_to :friend, :class_name => 'Person', :foreign_key => "friend_id"
>>>>>  validates_presence_of :person_id, :friend_id
>>>>> 
>>>>> The closes thing I could find that matches my issue is: 
>>>>> https://github.com/pat/thinking-sphinx/issues/310, I did put the define 
>>>>> index after all the declarations. I'm sure it's ts because when I comment 
>>>>> out all define_index methods in the code, it works fine.
>>>>> 
>>>>> This has been hounding me for a long time now.
>>>>> 
>>>>> Thanks for your help,
>>>>> Ahmed
>>>>> 
>>>>> -- 
>>>>> You received this message because you are subscribed to the Google Groups 
>>>>> "Thinking Sphinx" group.
>>>>> To view this discussion on the web visit 
>>>>> https://groups.google.com/d/msg/thinking-sphinx/-/rCxKBnWrdrAJ.
>>>>> To post to this group, send email to [email protected].
>>>>> To unsubscribe from this group, send email to 
>>>>> [email protected].
>>>>> For more options, visit this group at 
>>>>> http://groups.google.com/group/thinking-sphinx?hl=en.
>>>> 
>>>> 
>>>> 
>>>> -- 
>>>> You received this message because you are subscribed to the Google Groups 
>>>> "Thinking Sphinx" group.
>>>> To post to this group, send email to [email protected].
>>>> To unsubscribe from this group, send email to 
>>>> [email protected].
>>>> For more options, visit this group at 
>>>> http://groups.google.com/group/thinking-sphinx?hl=en.
>>>> 
>>> 
>>> 
>>> -- 
>>> You received this message because you are subscribed to the Google Groups 
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>>> [email protected].
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>>> http://groups.google.com/group/thinking-sphinx?hl=en.
>> 
>> 
>> 
>> -- 
>> You received this message because you are subscribed to the Google Groups 
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>> To post to this group, send email to [email protected].
>> To unsubscribe from this group, send email to 
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>> For more options, visit this group at 
>> http://groups.google.com/group/thinking-sphinx?hl=en.
>> 
> 

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