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module ActiveRecord
module Type
class Serialized < SimpleDelegator # :nodoc:
attr_reader :subtype, :coder
def initialize(subtype, coder)
@subtype = subtype
@coder = coder
super(subtype)
end
def type_cast(value)
if value.respond_to?(:unserialized_value)
value.unserialized_value(super(value.value))
else
super
end
end
def type_cast_for_write(value)
Attribute.new(coder, value, :unserialized)
end
def raw_type_cast_for_write(value)
Attribute.new(coder, value, :serialized)
end
def serialized?
true
end
def accessor
ActiveRecord::Store::IndifferentHashAccessor
end
class Attribute < Struct.new(:coder, :value, :state) # :nodoc:
def unserialized_value(v = value)
state == :serialized ? unserialize(v) : value
end
def serialized_value
state == :unserialized ? serialize : value
end
def unserialize(v)
self.state = :unserialized
self.value = coder.load(v)
end
def serialize
self.state = :serialized
self.value = coder.dump(value)
end
end
end
end
end
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