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-rw-r--r--activerecord/lib/active_record/associations/association_scope.rb20
1 files changed, 6 insertions, 14 deletions
diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb
index 8027acfb83..17f056e764 100644
--- a/activerecord/lib/active_record/associations/association_scope.rb
+++ b/activerecord/lib/active_record/associations/association_scope.rb
@@ -44,18 +44,6 @@ module ActiveRecord
chain.each_with_index do |reflection, i|
table, foreign_table = tables.shift, tables.first
- if reflection.source_macro == :has_and_belongs_to_many
- join_table = tables.shift
-
- scope = scope.joins(join(
- join_table,
- table[reflection.association_primary_key].
- eq(join_table[reflection.association_foreign_key])
- ))
-
- table, foreign_table = join_table, tables.first
- end
-
if reflection.source_macro == :belongs_to
if reflection.options[:polymorphic]
key = reflection.association_primary_key(self.klass)
@@ -90,7 +78,8 @@ module ActiveRecord
scope = scope.joins(join(foreign_table, constraint))
end
- klass = i == 0 ? self.klass : reflection.klass
+ is_first_chain = i == 0
+ klass = is_first_chain ? self.klass : reflection.klass
# Exclude the scope of the association itself, because that
# was already merged in the #scope method.
@@ -101,7 +90,10 @@ module ActiveRecord
scope.merge! item.except(:where, :includes, :bind)
end
- scope.includes! item.includes_values
+ if is_first_chain
+ scope.includes! item.includes_values
+ end
+
scope.where_values += item.where_values
scope.order_values |= item.order_values
end