Simple String method to only symbolize with a given array of whitelist values.

symbolize_with_care.rb

class String
  def symbolize_with_care *args
    valid_values = args
    
    valid_values.each do |v|
      if v.to_s == self
        return v
        break
      end
    end
    raise "No valid values to symbolize #{self}."
  end
end