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require 'yaml'
module ActiveRecord
module Coders # :nodoc:
class YAMLColumn # :nodoc:
attr_accessor :object_class
def initialize(object_class = Object)
@object_class = object_class
end
def dump(obj)
return if obj.nil?
unless obj.is_a?(object_class)
raise SerializationTypeMismatch,
"Attribute was supposed to be a #{object_class}, but was a #{obj.class}. -- #{obj.inspect}"
end
YAML.dump obj
end
def load(yaml)
return object_class.new if object_class != Object && yaml.nil?
return yaml unless yaml.is_a?(String) && yaml =~ /^---/
obj = YAML.load(yaml)
unless obj.is_a?(object_class) || obj.nil?
raise SerializationTypeMismatch,
"Attribute was supposed to be a #{object_class}, but was a #{obj.class}"
end
obj ||= object_class.new if object_class != Object
obj
end
end
end
end
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