Define association between PagesDomain and Serverless::DomainCluster

app/models/pages_domain.rb

@@ -11,6 +11,7 @@ class PagesDomain < ApplicationRecord
 
   belongs_to :project
   has_many :acme_orders, class_name: "PagesDomainAcmeOrder"
+  has_many :serverless_domain_clusters, class_name: 'Serverless::DomainCluster', inverse_of: :pages_domain
 
   validates :domain, hostname: { allow_numeric_hostname: true }
   validates :domain, uniqueness: { case_sensitive: false }

spec/models/pages_domain_spec.rb

@@ -9,6 +9,7 @@ describe PagesDomain do
 
   describe 'associations' do
     it { is_expected.to belong_to(:project) }
+    it { is_expected.to have_many(:serverless_domain_clusters) }
   end
 
   describe 'validate domain' do