static public Method

Regexp.optionalize(pattern)

Source
Home > Ruby > Rails > Rails 2.0.2 > ActionPack EDGE > Regexp > optionalize

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Source Code

# File action_controller/routing/routing_ext.rb, line 32
def optionalize(pattern)
  case unoptionalize(pattern)
    when /\A(.|\(.*\))\Z/ then "#{pattern}?"
    else "(?:#{pattern})?"
  end
end
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