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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 is_default_value?(value)
value
else
coder.load(super)
end
end
def type_cast_for_write(value)
return if value.nil?
unless is_default_value?(value)
coder.dump(value)
end
end
alias type_cast_for_database type_cast_for_write
def serialized?
true
end
def accessor
ActiveRecord::Store::IndifferentHashAccessor
end
private
def changed?(old_value, new_value) # :nodoc:
old_value != new_value
end
def is_default_value?(value)
value == coder.load(nil)
end
end
end
end
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