1 files changed, 6 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/cast.rb b/activerecord/lib/active_record/connection_adapters/postgresql/cast.rb
index 35ce881302..3a3b500b1f 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/cast.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/cast.rb
@@ -35,11 +35,11 @@ module ActiveRecord
           end
         end
 
-        def hstore_to_string(object)
+        def hstore_to_string(object, array_member = false)
           if Hash === object
-            object.map { |k,v|
-              "#{escape_hstore(k)}=>#{escape_hstore(v)}"
-            }.join ','
+            string = object.map { |k, v| "#{escape_hstore(k)}=>#{escape_hstore(v)}" }.join(',')
+            string = escape_hstore(string) if array_member
+            string
           else
             object
           end
@@ -49,10 +49,10 @@ module ActiveRecord
           if string.nil?
             nil
           elsif String === string
-            Hash[string.scan(HstorePair).map { |k,v|
+            Hash[string.scan(HstorePair).map { |k, v|
               v = v.upcase == 'NULL' ? nil : v.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\\(.)/, '\1')
               k = k.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\\(.)/, '\1')
-              [k,v]
+              [k, v]
             }]
           else
             string