custom comment column in project list

app/models/queries/projects.rb

@@ -68,6 +68,7 @@ module Queries::Projects
 
     select Selects::CreatedAt
     select Selects::CustomField
+    select Selects::CustomComment
     select Selects::Default
     select Selects::Favorited
     select Selects::LatestActivityAt

app/models/queries/projects/selects/custom_comment.rb

@@ -0,0 +1,67 @@
+# 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 Queries::Projects::Selects::CustomComment < Queries::Selects::Base
+  include Queries::Selects::Shared::CustomFieldSelect
+
+  self.custom_field_context = Queries::Projects::CustomFieldContext
+
+  validates :custom_field, presence: { message: I18n.t(:"activerecord.errors.messages.does_not_exist") }
+
+  KEY = /\Acfc_(\d+)\z/
+
+  def self.key
+    KEY
+  end
+
+  def self.all_available
+    return [] unless available?
+
+    custom_field_context
+      .custom_fields
+      .where(has_comment: true)
+      .pluck(:id)
+      .map { |id| new(:"cfc_#{id}") }
+  end
+
+  def caption
+    I18n.t(:label_custom_comment, name: custom_field.name)
+  end
+
+  def custom_field
+    return @custom_field if defined?(@custom_field)
+
+    @custom_field = custom_field_context.find_custom_field(attribute[KEY, 1])
+  end
+
+  def available?
+    custom_field&.has_comment?
+  end
+end

config/locales/en.yml

@@ -3528,6 +3528,7 @@ en:
   label_lock_user: "Lock user"
   label_logged_as: "Logged in as"
   label_login: "Sign in"
+  label_custom_comment: "%{name} comment"
   label_custom_logo: "Custom logo desktop"
   label_custom_logo_mobile: "Custom logo mobile"
   label_custom_export_logo: "Custom export logo"

spec/models/queries/projects/project_query_spec.rb

@@ -116,15 +116,14 @@ RSpec.describe ProjectQuery do
 
   describe ".available_selects" do
     before do
-      scope = instance_double(ActiveRecord::Relation)
+      all_scope = instance_double(ActiveRecord::Relation)
+      commentable = instance_double(ActiveRecord::Relation)
 
-      allow(ProjectCustomField)
-        .to receive(:visible)
-              .and_return(scope)
+      allow(ProjectCustomField).to receive(:visible).and_return(all_scope)
+      allow(all_scope).to receive(:pluck).with(:id).and_return([23, 42])
 
-      allow(scope)
-        .to receive(:pluck)
-              .and_return([23, 42])
+      allow(all_scope).to receive(:where).with(has_comment: true).and_return(commentable)
+      allow(commentable).to receive(:pluck).with(:id).and_return([42])
     end
 
     # rubocop:disable Naming/VariableNumber
@@ -146,6 +145,7 @@ RSpec.describe ProjectQuery do
                             created_at
                             cf_23
                             cf_42
+                            cfc_42
                             budget_available
                             budget_planned
                             budget_spent
@@ -175,6 +175,7 @@ RSpec.describe ProjectQuery do
                             required_disk_space
                             cf_23
                             cf_42
+                            cfc_42
                             budget_available
                             budget_planned
                             budget_spent