match

# File activerecord/lib/active_record/dynamic_finder_match.rb, line 8
    def self.match(method)
      finder       = :first
      bang         = false
      instantiator = nil

      case method.to_s
      when /^find_(all_|last_)?by_([_a-zA-Z]\w*)$/
        finder = :last if $1 == 'last_'
        finder = :all if $1 == 'all_'
        names = $2
      when /^find_by_([_a-zA-Z]\w*)\!$/
        bang = true
        names = $1
      when /^find_or_create_by_([_a-zA-Z]\w*)\!$/
        bang = true
        instantiator = :create
        names = $1
      when /^find_or_(initialize|create)_by_([_a-zA-Z]\w*)$/
        instantiator = $1 == 'initialize' ? :new : :create
        names = $2
      else
        return nil
      end

      new(finder, instantiator, bang, names.split('_and_'))
    end