Extract nested parameter assignment to a separate method

1 files changed, 6 insertions, 3 deletions

diff --git a/activerecord/lib/active_record/attribute_assignment.rb b/activerecord/lib/active_record/attribute_assignment.rb
index a54c103476..bdd198791b 100644
--- a/activerecord/lib/active_record/attribute_assignment.rb
+++ b/activerecord/lib/active_record/attribute_assignment.rb
@@ -104,8 +104,7 @@ module ActiveRecord
         end
       end
 
-      # assign any deferred nested attributes after the base attributes have been set
-      nested_parameter_attributes.each { |k,v| _assign_attribute(k, v) }
+      assign_nested_parameter_attributes(nested_parameter_attributes) unless nested_parameter_attributes.empty?
       assign_multiparameter_attributes(multi_parameter_attributes) unless multi_parameter_attributes.empty?
     ensure
       @mass_assignment_options = previous_options
@@ -133,6 +132,11 @@ module ActiveRecord
       end
     end
 
+    # Assign any deferred nested attributes after the base attributes have been set.
+    def assign_nested_parameter_attributes(pairs)
+      pairs.each { |k, v| _assign_attribute(k, v) }
+    end
+
     # Instantiates objects for all attribute classes that needs more than one constructor parameter. This is done
     # by calling new on the column type or aggregation type (through composed_of) object with these parameters.
     # So having the pairs written_on(1) = "2004", written_on(2) = "6", written_on(3) = "24", will instantiate
@@ -252,6 +256,5 @@ module ActiveRecord
     def find_parameter_position(multiparameter_name)
       multiparameter_name.scan(/\(([0-9]*).*\)/).first.first.to_i
     end
-
   end
 end