Ignore legacy database columns

Closes #1377

app/models/contact.rb

@@ -56,6 +56,8 @@ class Contact < ApplicationRecord
 
   after_save :update_related_whois_records
 
+  self.ignored_columns = %w[legacy_id legacy_history_id]
+
   ORG = 'org'
   PRIV = 'priv'
 

app/models/dnskey.rb

@@ -22,6 +22,8 @@ class Dnskey < ApplicationRecord
   FLAGS = %w(0 256 257) # 256 = ZSK, 257 = KSK
   DS_DIGEST_TYPE = [1,2]
 
+  self.ignored_columns = %w[legacy_domain_id]
+
   def epp_code_map
     {
       '2005' => [

app/models/domain.rb

@@ -169,6 +169,8 @@ class Domain < ApplicationRecord
   attr_accessor :registrant_typeahead, :update_me,
     :epp_pending_update, :epp_pending_delete, :reserved_pw
 
+  self.ignored_columns = %w[legacy_id legacy_registrar_id legacy_registrant_id]
+
   def subordinate_nameservers
     nameservers.select { |x| x.hostname.end_with?(name) }
   end

app/models/domain_contact.rb

@@ -8,6 +8,8 @@ class DomainContact < ApplicationRecord
 
   attr_accessor :value_typeahead
 
+  self.ignored_columns = %w[legacy_domain_id legacy_contact_id]
+
   def epp_code_map
     {
       '2302' => [

app/models/nameserver.rb

@@ -34,6 +34,8 @@ class Nameserver < ApplicationRecord
 
   delegate :name, to: :domain, prefix: true
 
+  self.ignored_columns = %w[legacy_domain_id]
+
   def epp_code_map
     {
         '2302' => [

app/models/registrar.rb

@@ -46,6 +46,8 @@ class Registrar < ApplicationRecord
     RegenerateRegistrarWhoisesJob.enqueue id
   end
 
+  self.ignored_columns = %w[legacy_id]
+
   class << self
     def ordered
       order(name: :asc)
@@ -194,4 +196,4 @@ class Registrar < ApplicationRecord
   def vat_liable_in_foreign_country?
     !vat_liable_locally?
   end
-end
+end

app/models/reserved_domain.rb

@@ -8,6 +8,8 @@ class ReservedDomain < ApplicationRecord
 
   alias_attribute :registration_code, :password
 
+  self.ignored_columns = %w[legacy_id]
+
   class << self
     def pw_for(domain_name)
       name_in_ascii = SimpleIDN.to_ascii(domain_name)

app/models/user.rb

@@ -5,6 +5,8 @@ class User < ApplicationRecord
 
   attr_accessor :phone
 
+  self.ignored_columns = %w[legacy_id]
+
   def id_role_username
     "#{self.id}-#{self.class}: #{self.username}"
   end