Add an #table_name method to Table and TableAlias, which always returns the actual table name, not the alias. Then fix ToSql#column_for to use this table name when checking whether the table exists (rather than before, where it was checking whether a table with the alias name exists, which was incorrect).

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/arel/nodes/table_alias.rb b/lib/arel/nodes/table_alias.rb
index 4f4d5e29e9..1d3d36be0c 100644
--- a/lib/arel/nodes/table_alias.rb
+++ b/lib/arel/nodes/table_alias.rb
@@ -8,6 +8,10 @@ module Arel
       def [] name
         Attribute.new(self, name)
       end
+
+      def table_name
+        relation.name
+      end
     end
   end
 end