PostgreSQL hstore types are automatically deserialized from the database.

2 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/column.rb b/activerecord/lib/active_record/connection_adapters/column.rb
index 0214154c51..6aa4a2c5b3 100644
--- a/activerecord/lib/active_record/connection_adapters/column.rb
+++ b/activerecord/lib/active_record/connection_adapters/column.rb
@@ -83,6 +83,7 @@ module ActiveRecord
         when :date                 then klass.value_to_date(value)
         when :binary               then klass.binary_to_string(value)
         when :boolean              then klass.value_to_boolean(value)
+        when :hstore               then klass.cast_hstore(value)
         else value
         end
       end
@@ -100,6 +101,7 @@ module ActiveRecord
         when :date                 then "#{klass}.value_to_date(#{var_name})"
         when :binary               then "#{klass}.binary_to_string(#{var_name})"
         when :boolean              then "#{klass}.value_to_boolean(#{var_name})"
+        when :hstore               then "#{klass}.cast_hstore(#{var_name})"
         else var_name
         end
       end
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 9802bac87b..563f98dc5e 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -49,6 +49,10 @@ module ActiveRecord
             super
           end
         end
+
+        def cast_hstore(string)
+          Hash[[string.split('=>').map { |k| k[1...-1] }]]
+        end
       end
       # :startdoc: