Update models, views, and fixtures for polymorphic reactions

- Reaction: belongs_to :reactable (polymorphic) instead of :comment
- Comment: has_many :reactions with as: :reactable
- Views: use reaction.reactable instead of reaction.comment
- Fixtures: use polymorphic syntax for reactable association

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/models/comment.rb

@@ -4,7 +4,7 @@ class Comment < ApplicationRecord
   belongs_to :account, default: -> { card.account }
   belongs_to :card, touch: true
   belongs_to :creator, class_name: "User", default: -> { Current.user }
-  has_many :reactions, -> { order(:created_at) }, dependent: :delete_all
+  has_many :reactions, -> { order(:created_at) }, as: :reactable, dependent: :delete_all
 
   has_rich_text :body
 

app/models/reaction.rb

@@ -1,6 +1,6 @@
 class Reaction < ApplicationRecord
-  belongs_to :account, default: -> { comment.account }
+  belongs_to :account, default: -> { reactable.account }
-  belongs_to :comment, touch: true
+  belongs_to :reactable, polymorphic: true, touch: true
   belongs_to :reacter, class_name: "User", default: -> { Current.user }
 
   scope :ordered, -> { order(:created_at) }
@@ -11,6 +11,6 @@ class Reaction < ApplicationRecord
 
   private
     def register_card_activity
-      comment.card.touch_last_active_at
+      reactable.card.touch_last_active_at
     end
 end

app/views/cards/comments/reactions/_reaction.html.erb

@@ -15,7 +15,7 @@
         class: [ "txt-small", { "txt-medium": reaction.all_emoji? } ],
         data: { action: "click->reaction-delete#reveal keydown.enter->reaction-delete#reveal:prevent", reaction_delete_target: "content" } %>
 
-  <%= button_to card_comment_reaction_path(reaction.comment.card, reaction.comment, reaction),
+  <%= button_to card_comment_reaction_path(reaction.reactable.card, reaction.reactable, reaction),
         method: :delete,
         class: "reaction__delete btn btn--negative flex-item-justify-end",
         data: { action: "reaction-delete#perform", reaction_delete_target: "button" } do %>

app/views/cards/comments/reactions/_reaction.json.jbuilder

@@ -1,5 +1,5 @@
 json.cache! reaction do
   json.(reaction, :id, :content)
   json.reacter reaction.reacter, partial: "users/user", as: :user
-  json.url card_comment_reaction_url(reaction.comment.card, reaction.comment, reaction)
+  json.url card_comment_reaction_url(reaction.reactable.card, reaction.reactable, reaction)
 end

test/fixtures/reactions.yml

@@ -2,12 +2,12 @@ kevin:
   id: <%= ActiveRecord::FixtureSet.identify("kevin_reaction", :uuid) %>
   account: 37s_uuid
   content: "👍"
-  comment: logo_agreement_jz_uuid
+  reactable: logo_agreement_jz_uuid (Comment)
   reacter: kevin_uuid
 
 david:
   id: <%= ActiveRecord::FixtureSet.identify("david_reaction", :uuid) %>
   account: 37s_uuid
   content: "👍"
-  comment: logo_agreement_jz_uuid
+  reactable: logo_agreement_jz_uuid (Comment)
   reacter: david_uuid