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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_from_database(value)
if is_default_value?(value)
value
else
coder.load(super)
end
end
def type_cast_from_user(value)
type_cast_from_database(type_cast_for_database(value))
end
def type_cast_for_database(value)
return if value.nil?
unless is_default_value?(value)
super coder.dump(value)
end
end
def serialized?
true
end
def accessor
ActiveRecord::Store::IndifferentHashAccessor
end
def init_with(coder)
@subtype = coder['subtype']
@coder = coder['coder']
__setobj__(@subtype)
end
def encode_with(coder)
coder['subtype'] = @subtype
coder['coder'] = @coder
end
private
def is_default_value?(value)
value == coder.load(nil)
end
end
end
end
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