diff options
Diffstat (limited to 'activerecord/lib/active_record/type/serialized.rb')
-rw-r--r-- | activerecord/lib/active_record/type/serialized.rb | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/serialized.rb b/activerecord/lib/active_record/type/serialized.rb new file mode 100644 index 0000000000..3191a868ef --- /dev/null +++ b/activerecord/lib/active_record/type/serialized.rb @@ -0,0 +1,56 @@ +module ActiveRecord + module Type + class Serialized < DelegateClass(Type::Value) # :nodoc: + include Mutable + include Decorator + + attr_reader :subtype, :coder + + def initialize(subtype, coder) + @subtype = subtype + @coder = coder + super(subtype) + end + + def type_cast_from_database(value) + if default_value?(value) + value + else + coder.load(super) + end + end + + def type_cast_for_database(value) + return if value.nil? + unless default_value?(value) + super coder.dump(value) + end + end + + def changed_in_place?(raw_old_value, value) + return false if value.nil? + subtype.changed_in_place?(raw_old_value, coder.dump(value)) + end + + def accessor + ActiveRecord::Store::IndifferentHashAccessor + end + + def init_with(coder) + @coder = coder['coder'] + super + end + + def encode_with(coder) + coder['coder'] = @coder + super + end + + private + + def default_value?(value) + value == coder.load(nil) + end + end + end +end |