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railscasts有用戶模型(link to the full file)Railscasts,其中「令牌」變量來自
class User < ActiveRecord::Base
........
def generate_token
if token.blank? # where's definition of this variable?
characters = ('a'..'z').to_a + ('A'..'Z').to_a + ('1'..'9').to_a
begin
self.token = Array.new(32) { characters.sample }.join
end while self.class.exists?(:token => token)
end
end
end
請給我解釋一下其中變量token
出身的開源項目?這個變量的定義在哪裏?
令牌和self.token是否指的是相同的變量? – megas 2011-02-02 23:49:19