multiple key / values work

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -51,7 +51,10 @@ def string_to_time(string)
         end
 
         def cast_hstore(string)
-          Hash[[string.split('=>').map { |k| k[1...-1] }]]
+          kvs = string.split(', ').map { |kv|
+            kv.split('=>').map { |k| k[1...-1] }
+          }
+          Hash[kvs]
         end
       end
       # :startdoc:

activerecord/test/cases/adapters/postgresql/hstore_test.rb

@@ -37,4 +37,10 @@ def test_select
     x = Hstore.find :first
     assert_equal({'1' => '2'}, x.tags)
   end
+
+  def test_select_multikey
+    @connection.execute "insert into hstores (tags) VALUES ('1=>2,2=>3')"
+    x = Hstore.find :first
+    assert_equal({'1' => '2', '2' => '3'}, x.tags)
+  end
 end