aasm: aasm 4.12.0 & RAILS 4.2.0: NoMethodError (undefined method `aasm_state' ....

itemlized_spendingx is an engine and spending is the table name. Instead of using default ‘aasm_state’, column ‘wf_state’ is used in table spending. When saving a new spending, there is an error of above. The controller code which cause the error is:

 def create
      @spending = ItemlizedSpendingx::Spending.new(new_params)
      if @spending.save   #<<<<<<<=======causing error
          redirect_to URI.escape(SUBURI + "/view_handler?index=0&msg=Successfully Saved!")
       end
    end

Here is the full error trace:

NoMethodError (undefined method `aasm_state' for #<ItemlizedSpendingx::Spending:0x007f3e359bd988>):
  activemodel (4.2.0) lib/active_model/attribute_methods.rb:433:in `method_missing'
  aasm (4.11.1) lib/aasm/persistence/base.rb:36:in `aasm_read_state'
  aasm (4.11.1) lib/aasm/instance_base.rb:12:in `current_state'
  aasm (4.11.1) lib/aasm/persistence/active_record_persistence.rb:233:in `aasm_invalid_state?'
  aasm (4.11.1) lib/aasm/persistence/active_record_persistence.rb:225:in `block in aasm_validate_states'
  aasm (4.11.1) lib/aasm/persistence/active_record_persistence.rb:223:in `each'
  aasm (4.11.1) lib/aasm/persistence/active_record_persistence.rb:223:in `aasm_validate_states'
  activesupport (4.2.0) lib/active_support/callbacks.rb:427:in `block in make_lambda'
  activesupport (4.2.0) lib/active_support/callbacks.rb:189:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:189:in `block in simple'
  activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_validate_callbacks'
  activemodel (4.2.0) lib/active_model/validations.rb:395:in `run_validations!'
  activemodel (4.2.0) lib/active_model/validations/callbacks.rb:113:in `block in run_validations!'
  activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_validation_callbacks'
  activemodel (4.2.0) lib/active_model/validations/callbacks.rb:113:in `run_validations!'
  activemodel (4.2.0) lib/active_model/validations.rb:334:in `valid?'
  activerecord (4.2.0) lib/active_record/validations.rb:58:in `valid?'
  activerecord (4.2.0) lib/active_record/validations.rb:83:in `perform_validations'
  activerecord (4.2.0) lib/active_record/validations.rb:37:in `save'
  activerecord (4.2.0) lib/active_record/attribute_methods/dirty.rb:21:in `save'
  activerecord (4.2.0) lib/active_record/transactions.rb:286:in `block (2 levels) in save'
  activerecord (4.2.0) lib/active_record/transactions.rb:347:in `block in with_transaction_returning_status'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/transaction.rb:188:in `within_new_transaction'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
  activerecord (4.2.0) lib/active_record/transactions.rb:220:in `transaction'
  activerecord (4.2.0) lib/active_record/transactions.rb:344:in `with_transaction_returning_status'
  activerecord (4.2.0) lib/active_record/transactions.rb:286:in `block in save'
  activerecord (4.2.0) lib/active_record/transactions.rb:301:in `rollback_active_record_state!'
  activerecord (4.2.0) lib/active_record/transactions.rb:285:in `save'
  /home/ubuntu/.rvm/gems/ruby-2.2.6/bundler/gems/itemlized_spendingx-c05187165a46/app/controllers/itemlized_spendingx/spendings_controller.rb:36:in `create'
  actionpack (4.2.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.2.0) lib/abstract_controller/base.rb:198:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (4.2.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:219:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:219:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:219:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
  activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_process_action_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.0) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  activesupport (4.2.0) lib/active_support/notifications.rb:164:in `block in instrument'
  activesupport (4.2.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.2.0) lib/active_support/notifications.rb:164:in `instrument'
  actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.2.0) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.2.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (4.2.0) lib/abstract_controller/base.rb:137:in `process'
  actionview (4.2.0) lib/action_view/rendering.rb:30:in `process'
  actionpack (4.2.0) lib/action_controller/metal.rb:195:in `dispatch'
  actionpack (4.2.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  actionpack (4.2.0) lib/action_controller/metal.rb:236:in `block in action'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `call'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:42:in `serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `each'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
  railties (4.2.0) lib/rails/engine.rb:518:in `call'
  railties (4.2.0) lib/rails/railtie.rb:194:in `public_send'
  railties (4.2.0) lib/rails/railtie.rb:194:in `method_missing'
  actionpack (4.2.0) lib/action_dispatch/routing/mapper.rb:51:in `serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `each'
  actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
  rack (1.6.5) lib/rack/etag.rb:24:in `call'
  rack (1.6.5) lib/rack/conditionalget.rb:38:in `call'
  rack (1.6.5) lib/rack/head.rb:13:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/flash.rb:260:in `call'
  rack (1.6.5) lib/rack/session/abstract/id.rb:225:in `context'
  rack (1.6.5) lib/rack/session/abstract/id.rb:220:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
  activerecord (4.2.0) lib/active_record/query_cache.rb:36:in `call'
  activerecord (4.2.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:647:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `call'
  activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
  activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
  request_store (1.3.2) lib/request_store/middleware.rb:9:in `call'
  actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.6.5) lib/rack/methodoverride.rb:22:in `call'
  rack (1.6.5) lib/rack/runtime.rb:18:in `call'
  activesupport (4.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
  rack (1.6.5) lib/rack/sendfile.rb:113:in `call'
  railties (4.2.0) lib/rails/engine.rb:518:in `call'
  railties (4.2.0) lib/rails/application.rb:164:in `call'
  railties (4.2.0) lib/rails/railtie.rb:194:in `public_send'
  railties (4.2.0) lib/rails/railtie.rb:194:in `method_missing'
  passenger (5.0.30) src/ruby_supportlib/phusion_passenger/rack/thread_handler_extension.rb:97:in `process_request'
  passenger (5.0.30) src/ruby_supportlib/phusion_passenger/request_handler/thread_handler.rb:160:in `accept_and_process_next_request'
  passenger (5.0.30) src/ruby_supportlib/phusion_passenger/request_handler/thread_handler.rb:113:in `main_loop'
  passenger (5.0.30) src/ruby_supportlib/phusion_passenger/request_handler.rb:416:in `block (3 levels) in start_threads'
  passenger (5.0.30) src/ruby_supportlib/phusion_passenger/utils.rb:113:in `block in create_thread_and_abort_on_exception'

Something puzzles me is that the error disappears after restarting the web server. Also when I just login to the system, there is no error. However if I leave the system idle for 20-30 min and come back, then the error shows up. My understanding of the error is that the aasm gem is still looking for default column name ‘aasm_state’. I can not recall the similar error for previous version (before 4.11). Is it a bug in aasm?

About this issue

Original URL
State: open
Created 7 years ago
Comments: 23 (7 by maintainers)

Most upvoted comments

To chime in on my colleague @skorth, here is a minimal test case to illustrate this issue:

class FooBar
  include AASM
  aasm :funny_state
end

AASM::StateMachineStore.fetch(FooBar, true)
# => #<AASM::StateMachineStore:0x000056370119d9d8
#  @machines=#<Concurrent::Map:0x0056370119d9b0 entries=1 default_proc=nil>>

FooBar.aasm.human_event_name(:something)
# => "Something"

AASM::StateMachineStore.fetch(FooBar, true)
# => #<AASM::StateMachineStore:0x000056370119d9d8
#  @machines=#<Concurrent::Map:0x0056370119d9b0 entries=2 default_proc=nil>>

Notice how the call to FooBar.aasm.human_event_name(:something)

doesn’t raise an exception because the state machine doesn’t exist
changes the state machine store’s size from 1 to 2.

So this call implictly creates a second state machine which subsequently fails e.g. when ActiveRecord validates for correct state values. Additionally, the zombie state machine survives Rails’ code reloading in development mode, making this issue hard to debug.

Tho85 on Oct 22, 2018

Hey, we also run into the issue (undefined method `aasm_state’) and found the reason why it happened in our context. We didn’t have a default state_machine but AASM::StateMachineStore generates a default one for you if you call it for example by using Car.aasm.human_event_name(some_attribute).

In our case this happend while rendering the view. As you can see we forgot to add the state_machine name Car.aasm(:our_state_machine).human_event_name(some_attribute). The problem is that AASM::StateMachineStore internally creates a default one that can’t work because we didn’t have configured a default one. And since it works like a singleton we also had to restart the server afterwards.

skorth on Oct 22, 2018