Data Explorer NoMethodError (undefined method `username' for nil:NilClass)


(cpradio) #1

Create the following generic query in Data Explorer

SELECT id, user_id, post_id, modifications, number, 
created_at, updated_at, hidden 
FROM post_revisions

You will get the following data in your /logs after seeing a 500 error message

NoMethodError (undefined method `username' for nil:NilClass)
/var/www/discourse/plugins/discourse-data-explorer/plugin.rb:52:in `username'
(eval):7:in `_fast_attributes'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/serializer.rb:467:in `rescue in attributes'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/serializer.rb:455:in `attributes'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/serializer.rb:479:in `_serializable_hash'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/serializer.rb:361:in `serializable_hash'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/array_serializer.rb:89:in `block in _serializable_array'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/relation/delegation.rb:46:in `map'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/relation/delegation.rb:46:in `map'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/array_serializer.rb:79:in `_serializable_array'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/array_serializer.rb:73:in `serializable_array'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/active_model/array_serializer.rb:53:in `as_json'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `block in as_json'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `map'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `as_json'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `block in as_json'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `map'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:159:in `as_json'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/json/encoding.rb:35:in `encode'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/json/encoding.rb:22:in `encode'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb:37:in `to_json_with_active_support_encoder'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/renderers.rb:116:in `block in <module:Renderers>'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/active_model_serializers-0.8.3/lib/action_controller/serialization.rb:50:in `block (2 levels) in <module:Serialization>'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/renderers.rb:45:in `block in _render_to_body_with_renderer'
/usr/local/lib/ruby/2.3.0/set.rb:306:in `each_key'
/usr/local/lib/ruby/2.3.0/set.rb:306:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/renderers.rb:41:in `_render_to_body_with_renderer'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/renderers.rb:37:in `render_to_body'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/abstract_controller/rendering.rb:25:in `render'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/rendering.rb:16:in `render'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:44:in `block (2 levels) in render'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/usr/local/lib/ruby/2.3.0/benchmark.rb:308:in `realtime'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/benchmark.rb:12:in `ms'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:44:in `block in render'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:87:in `cleanup_view_runtime'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:43:in `render'
/var/www/discourse/plugins/discourse-data-explorer/plugin.rb:1065:in `block (2 levels) in run'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/mime_responds.rb:217:in `respond_to'
/var/www/discourse/plugins/discourse-data-explorer/plugin.rb:1045:in `run'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/abstract_controller/base.rb:198:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/rendering.rb:10:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:117:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:505:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:778:in `_run_process_action_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/abstract_controller/callbacks.rb:19:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/rescue.rb:29:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/notifications.rb:164:in `block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/notifications.rb:164:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/abstract_controller/base.rb:137:in `process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionview-4.2.7.1/lib/action_view/rendering.rb:30:in `process'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-mini-profiler-0.10.1/lib/mini_profiler/profiling_methods.rb:102:in `block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal.rb:196:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_controller/metal.rb:237:in `block in action'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:43:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:30:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:30:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:817:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine.rb:518:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/railtie.rb:194:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/railtie.rb:194:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/mapper.rb:51:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:30:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/journey/router.rb:30:in `serve'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/routing/route_set.rb:817:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:186:in `call!'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/strategy.rb:164:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/omniauth-1.3.1/lib/omniauth/builder.rb:63:in `call'
/var/www/discourse/config/initializers/008-rack-cors.rb:15:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/conditionalget.rb:38:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/head.rb:13:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:138:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/params_parser.rb:27:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/flash.rb:260:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/session/abstract/id.rb:225:in `context'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/session/abstract/id.rb:220:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/cookies.rb:560:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/query_cache.rb:36:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.7.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:88:in `__run_callbacks__'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/logster-1.2.5/lib/logster/middleware/reporter.rb:31:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/rack/logger.rb:38:in `call_app'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/rack/logger.rb:22:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:13:in `call_with_quiet_assets'
/var/www/discourse/config/initializers/100-silence_logger.rb:26:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.7.1/lib/action_dispatch/middleware/request_id.rb:21:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/methodoverride.rb:22:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/runtime.rb:18:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/sendfile.rb:113:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-mini-profiler-0.10.1/lib/mini_profiler/profiler.rb:278:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/message_bus-2.0.2/lib/message_bus/rack/middleware.rb:62:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:73:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine.rb:518:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/application.rb:165:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/railtie.rb:194:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/railtie.rb:194:in `method_missing'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/urlmap.rb:66:in `block in call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/urlmap.rb:50:in `each'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/urlmap.rb:50:in `call'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:562:in `process_client'
/var/www/discourse/lib/scheduler/defer.rb:85:in `process_client'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:658:in `worker_loop'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:508:in `spawn_missing_workers'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:132:in `start'
/var/www/discourse/vendor/bundle/ruby/2.3.0/gems/unicorn-5.2.0/bin/unicorn:126:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.3.0/bin/unicorn:22:in `load'
/var/www/discourse/vendor/bundle/ruby/2.3.0/bin/unicorn:22:in `<main>'

Just upgraded my sandbox to v1.7.0.beta11 +21 and Data Explorer Plugin is at version 0.2 (4b3e5d5)


(Mittineague) #2

I just tried and it worked fine for me.

I think you may need to do a rebuild to pull in the latest version, I know there have been recent changes made.

The “version 0.2” is a bit misleading since it appears the number wasn’t bumped up in the plugin.rb file. (I’m guilty of missing doing that myself :blush: )

If you take out the user_id from the SELECT and it works, that’s the problem.


(cpradio) #3

Hmm, just completed a rebuild and it is still happening. Going to have to dig into this a bit more then if it isn’t happening for others. Will be back once I find out more.


(cpradio) #4

OK. I’m perplexed. I’ve disabled all plugins both my own and official. Kept the data explorer plug-in (obviously) and the issue remains. Going to have to do some queries in the rails console as it must be a corrupt user or corrupt revision entry.


(Mittineague) #5

That sounds like a plan to me. The most I could dig up doesn’t look to be very helpful


(Alan Tan) #6

@cpradio Are there any updates on this? Is this a bug in the plugin or a corrupt user? :slight_smile:


(cpradio) #7

I don’t know. I haven’t really had much of a chance to do the digging I wanted. I’m not sure when I’ll be able to dig into it again as the need/desire to do so has greatly diminished at this point.


(Alan Tan) #8

Ok I’ll close this for now. Feel free to flag again if you run into the issue again :slight_smile:


(Alan Tan) #9