(bug) unable to fetch members list

app/services/members/list_service.rb

@@ -100,7 +100,7 @@ class Members::ListService
                     'users.id'
                   end
 
-      "#{order_key} #{direction}, users.id ASC LIMIT #{limit} OFFSET #{offset}"
+      Arel.sql("#{order_key} #{direction}, users.id ASC LIMIT #{limit} OFFSET #{offset}")
     end
   end
 end

test/integration/members/list_test.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+class ListTest < ActionDispatch::IntegrationTest
+  def setup
+    @admin = User.find_by(username: 'admin')
+    login_as(@admin, scope: :user)
+  end
+
+  test 'all members' do
+    post '/api/members/list', params: { query: {
+      search: '',
+      order_by: 'id',
+      page: 1,
+      size: 20
+    } }.to_json, headers: default_headers
+
+    # Check response format & status
+    assert_equal 200, response.status, response.body
+    assert_match Mime[:json].to_s, response.content_type
+
+    # Check that we have all users
+    users = json_response(response.body)
+    assert_equal User.members.count, users.size, 'some users are missing'
+
+    # Check that users are ordered by id
+    first_user = User.members.order(:id).limit(1).first
+    last_user = User.members.order(id: :desc).limit(1).first
+    assert_equal first_user.id, users.first[:id]
+    assert_equal last_user.id, users.last[:id]
+  end
+end