diff options
| -rw-r--r-- | lib/arel/algebra/relations/relation.rb | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/arel/algebra/relations/relation.rb b/lib/arel/algebra/relations/relation.rb index e2f9f12866..d51e24d088 100644 --- a/lib/arel/algebra/relations/relation.rb +++ b/lib/arel/algebra/relations/relation.rb @@ -206,10 +206,12 @@ module Arel private def matching_attributes(attribute) - (@matching_attributes ||= attributes.inject({}) do |hash, a| - (hash[a.is_a?(Value) ? a.value : a.root] ||= []) << a - hash - end)[attribute.root] || [] + unless @matching_attributes + @matching_attributes = Hash[attributes.map do |a| + [a.root, a] + end] + end + [@matching_attributes[attribute.root]] || [] end def has_attribute?(attribute) |