Refactor to remove disable CodeReuse/ActiveRecord

when using board finders

app/models/members/group_member.rb

@@ -21,6 +21,7 @@ class GroupMember < Member
   scope :of_groups, ->(groups) { where(source_id: groups.select(:id)) }
   scope :of_ldap_type, -> { where(ldap: true) }
   scope :count_users_by_group_id, -> { group(:source_id).count }
+  scope :with_user, -> (user) { where(user: user) }
 
   after_create :update_two_factor_requirement, unless: :invite?
   after_destroy :update_two_factor_requirement, unless: :invite?

ee/app/graphql/ee/mutations/boards/lists/create.rb

@@ -19,7 +19,6 @@ module EE
 
           private
 
-          # rubocop: disable CodeReuse/ActiveRecord
           override :authorize_list_type_resource!
           def authorize_list_type_resource!(board, params)
             super
@@ -27,7 +26,7 @@ module EE
             if params[:milestone_id]
               milestones = ::Boards::MilestonesFinder.new(board, current_user).execute
 
-              unless milestones.where(id: params[:milestone_id]).exists?
+              unless milestones.id_in(params[:milestone_id]).exists?
                 raise ::Gitlab::Graphql::Errors::ArgumentError, 'Milestone not found!'
               end
             end
@@ -35,12 +34,11 @@ module EE
             if params[:assignee_id]
               users = ::Boards::UsersFinder.new(board, current_user).execute
 
-              unless users.where(user_id: params[:assignee_id]).exists?
+              unless users.with_user(params[:assignee_id]).exists?
                 raise ::Gitlab::Graphql::Errors::ArgumentError, 'User not found!'
               end
             end
           end
-          # rubocop: enable CodeReuse/ActiveRecord
 
           override :create_list_params
           def create_list_params(args)

ee/lib/ee/api/boards_responses.rb

@@ -41,29 +41,29 @@ module EE
           end
 
           # Overrides API::BoardsResponses authorize_list_type_resource!
-          # rubocop: disable CodeReuse/ActiveRecord
           def authorize_list_type_resource!
+            # rubocop: disable CodeReuse/ActiveRecord
             if params[:label_id] && !available_labels_for(board_parent).exists?(params[:label_id])
               render_api_error!({ error: 'Label not found!' }, 400)
             end
+            # rubocop: enable CodeReuse/ActiveRecord
 
-            if milestone_id = params[:milestone_id]
+            if params[:milestone_id]
               milestones = ::Boards::MilestonesFinder.new(board, current_user).execute
 
-              unless milestones.find_by(id: milestone_id)
+              unless milestones.id_in(params[:milestone_id]).exists?
                 render_api_error!({ error: 'Milestone not found!' }, 400)
               end
             end
 
-            if assignee_id = params[:assignee_id]
+            if params[:assignee_id]
               users = ::Boards::UsersFinder.new(board, current_user).execute
 
-              unless users.find_by(user_id: assignee_id)
+              unless users.with_user(params[:assignee_id]).exists?
                 render_api_error!({ error: 'User not found!' }, 400)
               end
             end
           end
-          # rubocop: enable CodeReuse/ActiveRecord
 
           # Overrides API::BoardsResponses list_creation_params
           params :list_creation_params do

spec/models/members/group_member_spec.rb

@@ -4,9 +4,10 @@ require 'spec_helper'
 
 RSpec.describe GroupMember do
   context 'scopes' do
+    let_it_be(:user_1) { create(:user) }
+    let_it_be(:user_2) { create(:user) }
+
     it 'counts users by group ID' do
-      user_1 = create(:user)
-      user_2 = create(:user)
       group_1 = create(:group)
       group_2 = create(:group)
 
@@ -25,6 +26,15 @@ RSpec.describe GroupMember do
         expect(described_class.of_ldap_type).to eq([group_member])
       end
     end
+
+    describe '.with_user' do
+      it 'returns requested user' do
+        group_member = create(:group_member, user: user_2)
+        create(:group_member, user: user_1)
+
+        expect(described_class.with_user(user_2)).to eq([group_member])
+      end
+    end
   end
 
   describe '.access_level_roles' do