make comments journable

app/models/comment.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 #-- copyright
 # OpenProject is an open source project management software.
 # Copyright (C) the OpenProject GmbH
@@ -34,6 +36,8 @@ class Comment < ApplicationRecord
 
   after_create :send_news_comment_added_mail
 
+  acts_as_journalized
+
   def text
     comments
   end

app/models/journal/comment_journal.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+class Journal::CommentJournal < Journal::BaseJournal
+  self.table_name = "comment_journals"
+end

db/migrate/20250225120139_create_comment_journals.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+class CreateCommentJournals < ActiveRecord::Migration[7.1]
+  def change
+    # rubocop:disable Rails/CreateTableWithTimestamps
+    create_table :comment_journals do |t|
+      t.text :comments
+    end
+    # rubocop:enable Rails/CreateTableWithTimestamps
+  end
+end

spec/models/comment_spec.rb

@@ -73,4 +73,20 @@
         .not_to be_valid
     end
   end
+
+  describe "acts_as_journalized" do
+    let(:work_package) { create(:work_package) }
+    # using work package association as it was introduced along with journalized
+    let(:comment) { described_class.new(author: user, comments: "some important words", commented: work_package) }
+
+    it "creates a journal with the correct journable" do
+      comment.save
+      expect(Journal.last.journable).to eq(comment)
+    end
+
+    it "creates a journal with the correct notes" do
+      comment.save
+      expect(Journal.last.notes).to be_empty
+    end
+  end
 end