lib/has_settings/setting.rb in has_settings-0.0.4 vs lib/has_settings/setting.rb in has_settings-0.0.5

@@ -1,11 +1,12 @@
 module HasSettings
   class Setting < ActiveRecord::Base
     abstract_class = true
 
-    after_create   :reset_owner_association
-    after_destroy  :reset_owner_association
+    after_create  :reset_owner_association
+    after_destroy :reset_owner_association
+    validate      :validate_format_of_name
 
     def create
       if new_record?
         super
       end
@@ -32,9 +33,17 @@
     def protected?
       self.class.protected?(self.name.to_sym)
     end
 
     private
+
+    def validate_format_of_name
+      if name.blank?
+        errors.add(:name, :blank)
+      elsif !name.is_a?(String) || name !~ /^([a-z0-9]+_?)+$/
+        errors.add(:name, :invalid)
+      end
+    end
 
     def owner_class_instance
       send(self.class.owner_class_sym)
     end