生成在线商店订单号的最佳方法? [英] Best way to generate order numbers for an online store?
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问题描述
我的在线商店中的每个订单都有一个面向用户的订单号。我想知道生成它们的最佳方法。条件包括:
Every order in my online store has a user-facing order number. I'm wondering the best way to generate them. Criteria include:
- 短
- 易于在电话中说(例如, m和 n是模棱两可的)
- 唯一
- 校验和(overkill?有用吗?)
- 编辑:不显示已完成的总订单数(客户可能会不满意地做出您的第3个订单)
- Short
- Easy to say over the phone (e.g., "m" and "n" are ambiguous)
- Unique
- Checksum (overkill? Useful?)
- Doesn't reveal how many total orders there have been (a customer might find it unnerving to make your 3rd order)
现在我正在使用以下方法(无校验和):
Right now I'm using the following method (no checksum):
def generate_number
possible_values = 'abfhijlqrstuxy'.upcase.split('') | '123456789'.split('')
record = true
while record
random = Array.new(5){possible_values[rand(possible_values.size)]}.join
record = Order.find(:first, :conditions => ["number = ?", random])
end
self.number = random
end
推荐答案
作为客户,我会很满意:
As a customer I would be happy with:
year-month-day/short_uid
例如:
2009-07-27/KT1E
每天提供约33 ^ 4〜100万笔订单的空间。
It gives room for about 33^4 ~ 1mln orders a day.
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