extract refuge method

app/models/case_log.rb

@@ -223,6 +223,9 @@ class CaseLog < ApplicationRecord
     prevten == 13
   end
 
+  def previous_tenancy_was_refuge?
+    prevten == 21
+  end
 private
 
   PIO = Postcodes::IO.new

app/models/validations/household_validations.rb

@@ -70,7 +70,7 @@ module Validations::HouseholdValidations
       record.errors.add :age1, I18n.t("validations.household.age.lead.over_20")
     end
 
-    if record.sex1 == "M" && record.prevten == 21
+    if record.sex1 == "M" && record.previous_tenancy_was_refuge?
       record.errors.add :prevten, I18n.t("validations.household.prevten.male_refuge")
       record.errors.add :sex1, I18n.t("validations.household.gender.male_refuge")
     end