added an alias for new to build to the AR collection proxy, this corrects an issue where the collection proxies were not consistent

2 files changed, 2 insertions, 10 deletions

diff --git a/activerecord/lib/active_record/associations/collection_proxy.rb b/activerecord/lib/active_record/associations/collection_proxy.rb
index adfc71d435..81b4a26b04 100644
--- a/activerecord/lib/active_record/associations/collection_proxy.rb
+++ b/activerecord/lib/active_record/associations/collection_proxy.rb
@@ -56,6 +56,8 @@ module ActiveRecord
         Array.wrap(association.options[:extend]).each { |ext| proxy_extend(ext) }
       end
 
+      alias_method :new, :build
+
       def respond_to?(*args)
         super ||
         (load_target && target.respond_to?(*args)) ||
@@ -115,14 +117,6 @@ module ActiveRecord
         @association.reload
         self
       end
-
-      def new(*args, &block)
-        if @association.is_a?(HasManyThroughAssociation)
-          @association.build(*args, &block)
-        else
-          method_missing(:new, *args, &block)
-        end
-      end
     end
   end
 end
diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb
index 280688be52..2e818dca5d 100644
--- a/activerecord/lib/active_record/associations/has_many_through_association.rb
+++ b/activerecord/lib/active_record/associations/has_many_through_association.rb
@@ -6,8 +6,6 @@ module ActiveRecord
     class HasManyThroughAssociation < HasManyAssociation #:nodoc:
       include ThroughAssociation
 
-      alias_method :new, :build
-
       # Returns the size of the collection by executing a SELECT COUNT(*) query if the collection hasn't been
       # loaded and calling collection.size if it has. If it's more likely than not that the collection does
       # have a size larger than zero, and you need to fetch that collection afterwards, it'll take one fewer