Merge branch 'master' into railstest

* master: (44 commits)
  Improve the changelog entry [ci skip]
  Fix explicit names on multiple file fields
  Correctly parse bigint defaults in PostgreSQL
  Move changelog to the top [ci skip]
  Fix indent and remove extra white spaces
  Fix scope chaining + STI
  failing test for #9869
  Improve `belongs_to touch: true` timestamp test
  Sort modules in alphabetical order.
  Avoid an attempt to fetch old record when id was not present in touch callback
  Use the correct pk field from the reflected class to find the old record
  Refactor mail_to to not generate intermediate hashes when adding href
  Ensure mail_to helper does not modify the given html options hash
  Use inspect when writing the foreign key from the reflection
  Use a space after the comment sign when showing the result of commands
  Exclude template files for rdoc API [ci skip]
  template should have generic name
  use | to have more intent revealing code
  Revert "Merge pull request #10034 from benofsky/fix_skipping_object_callback_filters"
  stop depending on callbacks
  ...

Conflicts:
	railties/test/application/rake_test.rb

1 files changed, 4 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/associations/join_dependency/join_association.rb b/activerecord/lib/active_record/associations/join_dependency/join_association.rb
index 0d3b4dbab1..a332034cb0 100644
--- a/activerecord/lib/active_record/associations/join_dependency/join_association.rb
+++ b/activerecord/lib/active_record/associations/join_dependency/join_association.rb
@@ -59,7 +59,7 @@ module ActiveRecord
           end
         end
 
-        def join_to(relation)
+        def join_to(manager)
           tables        = @tables.dup
           foreign_table = parent_table
           foreign_klass = parent.active_record
@@ -75,7 +75,7 @@ module ActiveRecord
               foreign_key = reflection.foreign_key
             when :has_and_belongs_to_many
               # Join the join table first...
-              relation.from(join(
+              manager.from(join(
                 table,
                 table[reflection.foreign_key].
                   eq(foreign_table[reflection.active_record_primary_key])
@@ -109,13 +109,13 @@ module ActiveRecord
               constraint = constraint.and(item.arel.constraints) unless item.arel.constraints.empty?
             end
 
-            relation.from(join(table, constraint))
+            manager.from(join(table, constraint))
 
             # The current table in this iteration becomes the foreign table in the next
             foreign_table, foreign_klass = table, reflection.klass
           end
 
-          relation
+          manager
         end
 
         def build_constraint(reflection, table, key, foreign_table, foreign_key)