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module ValidateOsFamily
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extend ActiveSupport::Concern
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module ClassMethods
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def validate_inclusion_in_families(family_attr_name)
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if attribute_names.include? family_attr_name.to_s
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validates family_attr_name,
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:inclusion => {
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:in => Operatingsystem.families,
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:message => N_("must be one of [ %s ]" % Operatingsystem.families.join(", "))
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},
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:allow_nil => true
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end
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define_method "#{family_attr_name}=" do |value|
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write_attribute(family_attr_name, value.blank? ? nil : value)
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end
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end
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end
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end
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