Story #105846070 - show error message to user when service not available

app/controllers/registrant/domains_controller.rb

@@ -2,6 +2,11 @@ class Registrant::DomainsController < RegistrantController
   def index
     authorize! :view, :registrant_domains
     ident_cc, ident = @current_user.registrant_ident.split '-'
-    @domains = BusinessRegistryCache.fetch_associated_domains ident, ident_cc
+    begin
+      @domains = BusinessRegistryCache.fetch_associated_domains ident, ident_cc
+    rescue Soap::Arireg::NotAvailableError => error
+      flash[:notice] = I18n.t(error.message[:message])
+      @domains = []
+    end
   end
 end

app/models/business_registry_cache.rb

@@ -48,7 +48,7 @@ class BusinessRegistryCache < ActiveRecord::Base
       cache = BusinessRegistryCache.find_by(ident: ident_code, ident_country_code: ident_cc)
       # fetch new data if cache is expired
       return cache if cache.present? && cache.retrieved_on > (Time.zone.now - Setting.days_to_keep_business_registry_cache.days)
-      cache = nil # expired data is forbidden
+      cache = [] # expired data is forbidden
       data = business_registry.associated_businesses(ident_code, ident_cc)
       unless data.nil?
         cache = BusinessRegistryCache.new(data)

app/views/registrant/domains/index.haml

@@ -16,7 +16,7 @@
             %th{class: 'col-xs-2'}
               = t(:registrar)
         %tbody
-          - @domains.each do |x|
+          - @domains.try(:each) do |x|
             %tr
               %td= x
               %td= x.registrant