중첩 답변과 게시물 투표 활성화 시 오류 발생

cuo_wu · 5월 23, 2026, 2:15오후

네스트된 답변(nest replies)과 게시물 투표(post voting)를 활성화하고 게시물을 네스트된 답변 보기로 전환하면 500 오류가 발생합니다.

NoMethodError (undefined method 'post_number' for nil) lib/nested_replies/post_tree_serializer.rb:88:in 'NestedReplies::PostTreeSerializer#topic_view_json' lib/nested_replies/post_tree_serializer.rb:2

NoMethodError (undefined method 'post_number' for nil)
lib/nested_replies/post_tree_serializer.rb:88:in 'NestedReplies::PostTreeSerializer#topic_view_json'
lib/nested_replies/post_tree_serializer.rb:20:in 'NestedReplies::PostTreeSerializer#serialize_topic'
app/services/nested_topic/list_roots.rb:124:in 'NestedTopic::ListRoots#enrich_with_topic_metadata'
lib/service/base/step.rb:43:in 'BasicObject#instance_exec'
lib/service/base/step.rb:43:in 'Service::Base::Step#run_step'
lib/service/base/step.rb:21:in 'block in Service::Base::Step#call'
lib/service/base/step.rb:52:in 'Service::Base::Step#with_runtime'
lib/service/base/step.rb:21:in 'Service::Base::Step#call'
lib/service/base/only_if_step.rb:19:in 'block in Service::Base::OnlyIfStep#run_step'
lib/service/base/only_if_step.rb:19:in 'Array#each'
lib/service/base/only_if_step.rb:19:in 'Service::Base::OnlyIfStep#run_step'
lib/service/base/step.rb:21:in 'block in Service::Base::Step#call'
lib/service/base/step.rb:52:in 'Service::Base::Step#with_runtime'
lib/service/base/step.rb:21:in 'Service::Base::Step#call'
lib/service/base.rb:260:in 'block in Service::Base#run!'
lib/service/base.rb:260:in 'Array#each'
lib/service/base.rb:260:in 'Service::Base#run!'
lib/service/base.rb:253:in 'Service::Base#run'
lib/service/base.rb:226:in 'Service::Base::ClassMethods#call'
lib/service/runner.rb:152:in 'Service::Runner#result'
lib/service/runner.rb:137:in 'Service::Runner#call'
lib/service/runner.rb:132:in 'Service::Runner.call'
lib/service/base.rb:227:in 'Service::Base::ClassMethods#call'
app/controllers/nested_topics_controller.rb:146:in 'NestedTopicsController#list_roots_response'
app/controllers/nested_topics_controller.rb:23:in 'NestedTopicsController#show'
app/controllers/application_controller.rb:452:in 'block in ApplicationController#with_resolved_locale'
app/controllers/application_controller.rb:452:in 'ApplicationController#with_resolved_locale'
app/controllers/application_controller.rb:1101:in 'ApplicationController#ensure_d...

plugins/discourse-post-voting/extensions/topic_view_extension.rb:88:in 'PostVoting::TopicViewExtension#next_page'
plugins/discourse-ai/lib/embeddings/entry_point.rb:41:in 'block (2 levels) in TopicViewSerializer#inject_into'
(eval at active_model_serializers-0.8.4/lib/active_model/serializer.rb:467):89:in 'TopicViewSerializer#_fast_attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:468:in 'ActiveModel::Serializer#attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:480:in 'ActiveModel::Serializer#_serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:359:in 'ActiveModel::Serializer#serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:347:in 'ActiveModel::Serializer#as_json'
lib/nested_replies/post_tree_serializer.rb:88:in 'NestedReplies::PostTreeSerializer#topic_view_json'
lib/nested_replies/post_tree_serializer.rb:20:in 'NestedReplies::PostTreeSerializer#serialize_topic'
app/services/nested_topic/list_roots.rb:124:in 'NestedTopic::ListRoots#enrich_with_topic_metadata'
lib/service/base/step.rb:43:in 'BasicObject#instance_exec'
lib/service/base/step.rb:43:in 'Service::Base::Step#run_step'
lib/service/base/step.rb:21:in 'block in Service::Base::Step#call'
lib/service/base/step.rb:52:in 'Service::Base::Step#with_runtime'
lib/service/base/step.rb:21:in 'Service::Base::Step#call'
lib/service/base/only_if_step.rb:19:in 'block in Service::Base::OnlyIfStep#run_step'
lib/service/base/only_if_step.rb:19:in 'Array#each'
lib/service/base/only_if_step.rb:19:in 'Service::Base::OnlyIfStep#run_step'
lib/service/base/step.rb:21:in 'block in Service::Base::Step#call'
lib/service/base/step.rb:52:in 'Service::Base::Step#with_runtime'
lib/service/base/step.rb:21:in 'Service::Base::Step#call'
lib/service/base.rb:260:in 'block in Service::Base#run!'
lib/service/base.rb:260:in 'Array#each'
lib/service/base.rb:260:in 'Service::Base#run!'
lib/service/base.rb:253:in 'Service::Base#run'
<internal:kernel>:91:in 'Kernel#tap'
lib/service/base.rb:226:in 'Service::Base::ClassMethods#call'
lib/service/runner.rb:152:in 'Service::Runner#result'
lib/service/runner.rb:137:in 'Service::Runner#call'
lib/service/runner.rb:132:in 'Service::Runner.call'
lib/service/base.rb:227:in 'Service::Base::ClassMethods#call'
app/controllers/nested_topics_controller.rb:146:in 'NestedTopicsController#list_roots_response'
app/controllers/nested_topics_controller.rb:23:in 'NestedTopicsController#show'
actionpack (8.0.5) lib/action_controller/metal/basic_implicit_render.rb:8:in 'ActionController::BasicImplicitRender#send_action'
actionpack (8.0.5) lib/abstract_controller/base.rb:215:in 'AbstractController::Base#process_action'
actionpack (8.0.5) lib/action_controller/metal/rendering.rb:193:in 'ActionController::Rendering#process_action'
actionpack (8.0.5) lib/abstract_controller/callbacks.rb:261:in 'block in AbstractController::Callbacks#process_action'
activesupport (8.0.5) lib/active_support/callbacks.rb:120:in 'block in ActiveSupport::Callbacks#run_callbacks'
app/controllers/application_controller.rb:452:in 'block in ApplicationController#with_resolved_locale'
i18n (1.14.8) lib/i18n.rb:354:in 'I18n::Base#with_locale'
app/controllers/application_controller.rb:452:in 'ApplicationController#with_resolved_locale'
activesupport (8.0.5) lib/active_support/callbacks.rb:129:in 'block in ActiveSupport::Callbacks#run_callbacks'
app/controllers/application_controller.rb:1101:in 'ApplicationController#ensure_dont_cache_page'
activesupport (8.0.5) lib/active_support/callbacks.rb:129:in 'block in ActiveSupport::Callbacks#run_callbacks'
activesupport (8.0.5) lib/active_support/callbacks.rb:140:in 'ActiveSupport::Callbacks#run_callbacks'
actionpack (8.0.5) lib/abstract_controller/callbacks.rb:260:in 'AbstractController::Callbacks#process_action'
actionpack (8.0.5) lib/action_controller/metal/rescue.rb:27:in 'ActionController::Rescue#process_action'
actionpack (8.0.5) lib/action_controller/metal/instrumentation.rb:76:in 'block in ActionController::Instrumentation#process_action'
activesupport (8.0.5) lib/active_support/notifications.rb:210:in 'block in ActiveSupport::Notifications.instrument'
activesupport (8.0.5) lib/active_support/notifications/instrumenter.rb:58:in 'ActiveSupport::Notifications::Instrumenter#instrument'
activesupport (8.0.5) lib/active_support/notifications.rb:210:in 'ActiveSupport::Notifications.instrument'
actionpack (8.0.5) lib/action_controller/metal/instrumentation.rb:75:in 'ActionController::Instrumentation#process_action'
actionpack (8.0.5) lib/action_controller/metal/params_wrapper.rb:259:in 'ActionController::ParamsWrapper#process_action'
activerecord (8.0.5) lib/active_record/railties/controller_runtime.rb:39:in 'ActiveRecord::Railties::ControllerRuntime#process_action'
actionpack (8.0.5) lib/abstract_controller/base.rb:152:in 'AbstractController::Base#process'
actionview (8.0.5) lib/action_view/rendering.rb:40:in 'ActionView::Rendering#process'
rack-mini-profiler (4.0.1) lib/mini_profiler/profiling_methods.rb:90:in 'block in ActionController::Base#profile_method' 
actionpack (8.0.5) lib/action_controller/metal.rb:252:in 'ActionController::Metal#dispatch'
actionpack (8.0.5) lib/action_controller/metal.rb:335:in 'ActionController::Metal.dispatch'
actionpack (8.0.5) lib/action_dispatch/routing/route_set.rb:67:in 'ActionDispatch::Routing::RouteSet::Dispatcher#dispatch'
actionpack (8.0.5) lib/action_dispatch/routing/route_set.rb:50:in 'ActionDispatch::Routing::RouteSet::Dispatcher#serve'
actionpack (8.0.5) lib/action_dispatch/journey/router.rb:53:in 'block in ActionDispatch::Journey::Router#serve'
actionpack (8.0.5) lib/action_dispatch/journey/router.rb:133:in 'block in ActionDispatch::Journey::Router#find_routes'
actionpack (8.0.5) lib/action_dispatch/journey/router.rb:126:in 'Array#each'
actionpack (8.0.5) lib/action_dispatch/journey/router.rb:126:in 'ActionDispatch::Journey::Router#find_routes'
actionpack (8.0.5) lib/action_dispatch/journey/router.rb:34:in 'ActionDispatch::Journey::Router#serve'
actionpack (8.0.5) lib/action_dispatch/routing/route_set.rb:908:in 'ActionDispatch::Routing::RouteSet#call'
lib/middleware/omniauth_bypass_middleware.rb:35:in 'Middleware::OmniauthBypassMiddleware#call'
lib/middleware/crawler_hooks.rb:13:in 'Middleware::CrawlerHooks#call'
rack (2.2.23) lib/rack/tempfile_reaper.rb:15:in 'Rack::TempfileReaper#call'
rack (2.2.23) lib/rack/conditional_get.rb:27:in 'Rack::ConditionalGet#call'
rack (2.2.23) lib/rack/head.rb:12:in 'Rack::Head#call'
actionpack (8.0.5) lib/action_dispatch/http/permissions_policy.rb:38:in 'ActionDispatch::PermissionsPolicy::Middleware#call'
lib/content_security_policy/middleware.rb:12:in 'ContentSecurityPolicy::Middleware#call'
lib/middleware/anonymous_cache.rb:417:in 'Middleware::AnonymousCache#call'
lib/middleware/csp_script_nonce_injector.rb:12:in 'Middleware::CspScriptNonceInjector#call'
lib/middleware/track_view_session_id_injector.rb:12:in 'Middleware::TrackViewSessionIdInjector#call'
config/initializers/008-rack-cors.rb:26:in 'Discourse::Cors#call'
rack (2.2.23) lib/rack/session/abstract/id.rb:266:in 'Rack::Session::Abstract::Persisted#context'
rack (2.2.23) lib/rack/session/abstract/id.rb:260:in 'Rack::Session::Abstract::Persisted#call'
actionpack (8.0.5) lib/action_dispatch/middleware/cookies.rb:706:in 'ActionDispatch::Cookies#call'
actionpack (8.0.5) lib/action_dispatch/middleware/callbacks.rb:31:in 'block in ActionDispatch::Callbacks#call'
activesupport (8.0.5) lib/active_support/callbacks.rb:100:in 'ActiveSupport::Callbacks#run_callbacks'
actionpack (8.0.5) lib/action_dispatch/middleware/callbacks.rb:30:in 'ActionDi

Lilly · 5월 23, 2026, 3:36오후

중첩(nesting)과 게시물 투표는 아직 호환되지 않을 가능성이 높습니다

markvanlan · 5월 26, 2026, 1:11오후

네 – 현재로서는 토픽에 중첩이 활성화된 경우 로직을 건너뛰도록 게시글 투표 플러그인에 몇 가지 확인 사항을 추가하는 것이 가장 좋은 해결책이라고 생각합니다. 기본적으로 플러그인을 중첩 답변과 호환되지 않도록 명시적으로 만드는 것입니다.

게시글 투표에 “중첩 답변으로 전환” 모드가 있으면 좋겠습니다. 게시글 투표 사용자의 일부는 단순히 중첩 답변으로 전환하고 싶어 할 것이라고 추측합니다.

markvanlan · 5월 26, 2026, 2:03오후

@Falco 중첩된 토픽의 투표 기능을 비활성화합니다 DEV: Disable post voting plugin on nested replies topics - Pull Request #40305 - discourse/discourse - GitHub

Falco · 5월 26, 2026, 3:59오후

이거 보셨나요?

github.com/discourse/discourse

FIX: post-voting topics failed to load in nested view (#40187)

main ← small-lovely-cat:fix-post-voting-nested

closed 09:39PM - 27 May 26 UTC

small-lovely-cat

+42 -4

When posting a post-voting topic using `discourse-post-voting` plugin, and openi…ng it in nested view, the page render failed. In devcontainer, the page throw an unrecoverable render error. And in production, the server returned 500 error. This issue stems from the `shouldRender` reading `topicPageQueryParams` unguarded, in nested view, the connector failed. This commit solved this by adding a guard to that. Also add some specs to avoid regression. Before: <img width="1917" height="912" alt="image" src="https://github.com/user-attachments/assets/1ebb901f-a3c6-43a5-8a72-76cb7bae13be" /> After: <img width="1917" height="926" alt="image" src="https://github.com/user-attachments/assets/a35ef924-5481-475b-8ca1-88557fe437b6" /> Also solved an issue preventing the textarea triggered by clicking `Add a comment` button from focusing in nested view.

markvanlan · 5월 26, 2026, 4:06오후

아니요, 아직 그렇지 않아요! 중첩된 답글에 대한 게시글 투표 기능을 비활성화하는 아이디어가 훨씬 더 유사하기 때문에, 그리고 호환성 문제를 추가로 방지할 수 있으므로 여전히 그 쪽을 선호합니다

small-lovely-cat · 5월 26, 2026, 9:29오후

비슷한 기능이 있는 것 같은데…

하지만 게시글 투표(post-voting)는 게시글에 동의하거나 반대하는 기능을 합니다. 기본적으로 중첩 보기(nested view)를 사용하는 사용자들이 게시글 투표 주제를 열었다가, 플랫 보기(flat view)의 다른 사용자는 투표할 수 있는 반면 자신은 투표할 수 없다는 사실을 알게 되면 당혹스러울 수 있습니다.

아마도 지원을 추가하는 것이 더 나은 아이디어일까요? 이 부분은 확신이 서지 않습니다.

markvanlan · 5월 27, 2026, 1:22오후

일단 중첩된 답변에 대해서는 이 기능을 비활성화할 예정입니다. 향후에는 중첩된 답변에 직접 업보트/다운보트 기능을 내장하여, 게시물 투표보다 더 나은 직접적인 대체 수단이 될 수 있도록 고려해 볼 수 있습니다.

cuo_wu · 5월 27, 2026, 3:25오후

이것이 더 나은 방법입니다. 중첩된 답변에 투표 기능을 추가하면 상위 순서가 더 의미 있어집니다.

cuo_wu · 5월 27, 2026, 3:34오후

네, 사실 중첩된 답글이든 아니든, vote 기능이 있어야 합니다. 현재 post vote와 nest view에 대해 몇 가지 변경을 가했습니다.

글		댓글	조회수
Introducing nested replies Announcements nested-replies	68	4473	8월 4, 2026
Testing Nested Replies on Meta Nested Replies Testing	136	3615	8월 4, 2026
Some posts land as embedded replies, not answers Bug post-voting	9	820	9월 4, 2023
Discourse Post Voting Plugin official , post-voting , included-in-core	36	21391	1월 12, 2026
Nested comments feature Support	3	309	10월 31, 2025

중첩 답변과 게시물 투표 활성화 시 오류 발생

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