AI: address review on PR #462

backend/app/controllers/posts_controller.rb

@@ -37,7 +37,7 @@ class PostsController < ApplicationController
 
     offset = (page - 1) * limit
 
-    needs_history_join = order[0] == 'updated_at' || updated_between.any?(&:present?)
+    history_join_required = order[0] == 'updated_at' || updated_between.any?(&:present?)
 
     q =
         filtered_posts(locale)
@@ -57,8 +57,8 @@ class PostsController < ApplicationController
     q = q.where('posts.created_at >= ?', created_between[0]) if created_between[0]
     q = q.where('posts.created_at <= ?', created_between[1]) if created_between[1]
     count_scope = q
-    if needs_history_join
-      history_times = HistoryAccess.visible(PostVersion.all)
+    if history_join_required
+      history_times = PostVersion.all
           .select('post_id, MAX(created_at) AS latest_at').group(:post_id)
       q = q.joins("LEFT JOIN (#{ history_times.to_sql }) history_times " +
                   'ON history_times.post_id = posts.id')
@@ -72,7 +72,7 @@ class PostsController < ApplicationController
       q = q.where("#{ updated_at_all_sql } <= ?", updated_between[1])
     end
     count_scope = q if updated_between.any?(&:present?)
-    if needs_history_join
+    if history_join_required
       q = q.select('posts.*', "#{ updated_at_all_sql } AS updated_at")
     end
 
@@ -92,10 +92,10 @@ class PostsController < ApplicationController
              .offset(offset)
              .to_a
     latest_version_times =
-        if needs_history_join
+        if history_join_required
           { }
         else
-          HistoryAccess.visible(PostVersion.where(post_id: posts.map(&:id)))
+          PostVersion.where(post_id: posts.map(&:id))
               .group(:post_id).maximum(:created_at)
         end
 

backend/app/controllers/tag_descriptions_controller.rb

@@ -49,7 +49,6 @@ class TagDescriptionsController < ApplicationController
   private
 
   def representation description
-    HistoryAccess.require_current!(description, TagDescriptionVersion)
     description.as_json(only: [
         :tag_id,
         :language_code,

backend/app/controllers/tag_groups_controller.rb

@@ -1,7 +1,7 @@
 class TagGroupsController < ApplicationController
   def index
     locale = resolve_locale!
-    groups = HistoryAccess.current(TagGroup.all, TagGroupVersion).includes(:created_by_user, :updated_by_user).order(:id)
+    groups = TagGroup.includes(:created_by_user, :updated_by_user).order(:id)
     render json: TagGroupRepr.many(locale, groups.to_a)
   end
 

backend/app/controllers/wiki_pages_controller.rb

@@ -8,12 +8,11 @@ class WikiPagesController < ApplicationController
 
     title = params[:title].to_s.strip
     descriptions =
-        HistoryAccess.current(TagDescription.all, TagDescriptionVersion)
-        .where(language_code: locale.language_code)
+        TagDescription.where(language_code: locale.language_code)
         .includes(tag: :tag_names)
 
     descriptions = descriptions.order(updated_at: :desc, id: :asc)
-    tag_groups = HistoryAccess.current(TagGroup.all, TagGroupVersion).order(updated_at: :desc, id: :asc)
+    tag_groups = TagGroup.order(updated_at: :desc, id: :asc)
     if title.present?
       pattern = "%#{ ApplicationRecord.sanitize_sql_like(title) }%"
       descriptions =
@@ -41,13 +40,13 @@ class WikiPagesController < ApplicationController
     return head :not_found unless language.is_a?(String)
     return head :not_found unless Language.exists?(code: language)
 
-    names = HistoryAccess.current(TagDescription.all, TagDescriptionVersion).joins(tag: :tag_names)
+    names = TagDescription.joins(tag: :tag_names)
         .where(language_code: locale.language_code, tag_names: { language_code: language })
         .pluck('tag_descriptions.tag_id', 'tag_descriptions.id', 'tag_names.name')
     candidates = names.map do |tag_id, description_id, name|
       WikiPageRepr.autolink_tag(locale, tag_id:, description_id:, name:, language:)
     end
-    candidates.concat(HistoryAccess.current(TagGroup.all, TagGroupVersion).order(:id).pluck(:id, :name).map do |id, name|
+    candidates.concat(TagGroup.order(:id).pluck(:id, :name).map do |id, name|
       WikiPageRepr.autolink_group(locale, id:, name:, language:)
     end)
     render json: candidates
@@ -411,7 +410,7 @@ class WikiPagesController < ApplicationController
   end
 
   def tag_description_by_title locale, title
-    HistoryAccess.current(TagDescription.all, TagDescriptionVersion).joins(tag: :tag_names)
+    TagDescription.joins(tag: :tag_names)
         .find_by(language_code: locale.language_code,
                  tag_names: { language_code: locale.language_code, name: title })
   end

backend/app/models/history_access.rb

@@ -147,29 +147,6 @@ class HistoryAccess < ActiveSupport::CurrentAttributes
     scope.where(Arel.sql(sql(scope.klass, row)))
   end
 
-  def self.current(scope, version_model)
-    return scope if admin?
-
-    table = scope.klass.table_name
-    keys = KEYS.fetch(version_model.table_name)
-    matches = keys.map do |key|
-      column = scope.klass.column_names.include?(key) ? key : 'id'
-      "current_snapshot.#{ key } = #{ table }.#{ column }"
-    end.join(' AND ')
-    boundary = "#{ matches } AND current_snapshot.version_no >= #{ table }.version_no " +
-        "AND current_snapshot.event_type = 'discard'"
-    scope = scope.where(Arel.sql("NOT EXISTS (SELECT 1 FROM #{ version_model.table_name } " +
-        "current_snapshot WHERE #{ boundary })"))
-    condition = "#{ matches } AND current_snapshot.version_no = #{ table }.version_no"
-    scope.where(Arel.sql("NOT EXISTS (SELECT 1 FROM #{ version_model.table_name } " +
-        "current_snapshot WHERE #{ condition } AND NOT (#{ sql(version_model, 'current_snapshot') }))"))
-  end
-
-  def self.require_current!(record, version_model)
-    return if admin?
-    raise Forbidden unless current(record.class.where(id: record.id), version_model).exists?
-  end
-
   def self.blob_visible?(blob, seen = [])
     return true if admin?
     return false if seen.include?(blob.id)

backend/app/representations/tag_group_repr.rb

@@ -44,7 +44,6 @@ module TagGroupRepr
   end
 
   def one locale, group
-    HistoryAccess.require_current!(group, TagGroupVersion)
     many(locale, [group]).first
   end
 

backend/app/representations/wiki_page_repr.rb

@@ -5,7 +5,6 @@ module WikiPageRepr
   module_function
 
   def tag_description locale, description
-    HistoryAccess.require_current!(description, TagDescriptionVersion)
     tag = description.tag
 
     { 'id' => description.id,

frontend/src/components/PostFormTagsArea.tsx

@@ -36,13 +36,10 @@ const replaceToken = (value: string, start: number, end: number, text: string) =
 type Props = Omit<ComponentPropsWithoutRef<'textarea'>, 'value' | 'onChange' | 'onBlur'> & {
     tags:     string
     setTags:  (tags: string) => void
-    label?:   ReactNode
     errors?:  ReactNode[] }
 
 
-const PostFormTagsArea: FC<Props> = (
-    { tags, setTags, label: fieldLabel, errors, ...rest },
-) => {
+const PostFormTagsArea: FC<Props> = ({ tags, setTags, errors, ...rest }) => {
   const { label } = useUITranslation ('navigation')
   const locale = useLocale ()
   const ref = useRef<HTMLTextAreaElement> (null)
@@ -120,10 +117,7 @@ const PostFormTagsArea: FC<Props> = (
   }, [locale])
 
   return (
-      <FormField
-	  className="relative w-full"
-	  label={fieldLabel ?? label ('tags')}
-	  messages={errors}>
+      <FormField className="relative w-full" label={label ('tags')} messages={errors}>
 	{({ describedBy, invalid }) => (
 	    <>
 	      <TextArea

frontend/src/pages/tags/NicoTagListPage.tsx

@@ -6,10 +6,11 @@ import { useLocation } from 'react-router-dom'
 import { useLocale, useLocaleNavigate } from '@/lib/useLocale'
 import TagLink from '@/components/TagLink'
 import SortHeader from '@/components/SortHeader'
-import PostFormTagsArea from '@/components/PostFormTagsArea'
+import FieldError from '@/components/common/FieldError'
 import FormField from '@/components/common/FormField'
 import PageTitle from '@/components/common/PageTitle'
 import Pagination from '@/components/common/Pagination'
+import TextArea from '@/components/common/TextArea'
 import useDialogue from '@/lib/dialogues/useDialogue'
 import MainArea from '@/components/layout/MainArea'
 import { toast } from '@/components/ui/use-toast'
@@ -356,18 +357,21 @@ const NicoTagListPage: FC<Props> = ({ user }) => {
 					       dark:bg-rose-950/30">
 				  <td colSpan={editable ? 5 : 4} className="p-3">
 				    <div className="space-y-2">
-				      <PostFormTagsArea
+				      <label htmlFor={`nico-links-${ tag.id }`}
+					     className="block text-sm font-semibold">
+					{label ('nico.tagsToLink')}
+				      </label>
+				      <TextArea
 					  id={`nico-links-${ tag.id }`}
-					  label={label ('nico.tagsToLink')}
-					  aria-label={message ('nico.tagsToLink').text}
-					  tags={rawTags[tag.id] ?? ''}
-					  errors={errors}
+					  value={rawTags[tag.id] ?? ''}
+					  invalid={(errorsByTagId[tag.id] ?? []).length > 0}
 					  className="min-h-24 resize-y"
 					  placeholder={message ('nico.tagsPlaceholder').text}
 					  lang={message ('nico.tagsPlaceholder').language}
-					  setTags={value => setRawTags (rawTags => ({
+					  onChange={e => setRawTags (rawTags => ({
 					      ...rawTags,
-					      [tag.id]: value}))}/>
+					      [tag.id]: e.target.value}))}/>
+				      <FieldError messages={errors}/>
 				      <div className="flex justify-end gap-2">
 					<button
 					    type="button"