1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/has_one_association.rb b/activerecord/lib/active_record/associations/has_one_association.rb
index c2568d0c0c..b85a40b2e5 100644
--- a/activerecord/lib/active_record/associations/has_one_association.rb
+++ b/activerecord/lib/active_record/associations/has_one_association.rb
@@ -8,18 +8,21 @@ module ActiveRecord
 
       def create(attrs = {}, replace_existing = true)
         new_record(replace_existing) do |reflection|
+          attrs = merge_with_conditions(attrs)
           reflection.create_association(attrs)
         end
       end
 
       def create!(attrs = {}, replace_existing = true)
         new_record(replace_existing) do |reflection|
+          attrs = merge_with_conditions(attrs)
           reflection.create_association!(attrs)
         end
       end
 
       def build(attrs = {}, replace_existing = true)
         new_record(replace_existing) do |reflection|
+          attrs = merge_with_conditions(attrs)
           reflection.build_association(attrs)
         end
       end
@@ -128,6 +131,12 @@ module ActiveRecord
           inverse = @reflection.inverse_of
           return !inverse.nil?
         end
+
+        def merge_with_conditions(attrs={})
+          attrs ||= {}
+          attrs.update(@reflection.options[:conditions]) if @reflection.options[:conditions].is_a?(Hash)
+          attrs
+        end
     end
   end
 end