add validation (in progress)

lib/locomotive/deployment/bushido/custom_domain.rb

@@ -7,6 +7,8 @@ module Locomotive
 
         included do
 
+          validate :subdomain_availability
+
           after_save :add_bushido_domains
           after_destroy :remove_bushido_domains
 
@@ -17,6 +19,12 @@ module Locomotive
 
           protected
 
+          def subdomain_availability
+            unless ::Bushido::App.check_subdomain_availability?(self.subdomain)
+              self.errors.add(:subdomain, :exclusion)
+            end
+          end
+
           def add_subdomain_to_domains_with_bushido
             unless self.domains_change.nil?
               full_subdomain = "#{self.subdomain}.#{Locomotive.config.default_domain}"