邮政编码、to_i 和 Ruby/Rails 中的前导零 [英] Zipcode , to_i and leading zero in Ruby/Rails

问题描述

我试图将在参数中传递的邮政编码保存为 "07306" 和 "03452"，但 to_i 似乎在验证之前将这些字符串值转换为 7306 和 3452，因此验证一直失败.

I am trying to save zip codes which are passed in the params as "07306", and "03452", but to_i seems to be converting these string values to 7306 and 3452 before validation, because of which the validation keeps failing.

如何防止 Ruby 删除前导零?

How do I prevent Ruby from removing the leading zeros?

邮政编码是数据库中的一个整数字段，验证使用以下命令检查邮政编码:

The zip code is an integer field in the database and the validation checks for the format of the zip using:

validates_format_of :zip, :with => /\A[+\-]?\d+\Z/, :message => "Please enter a valid US zipcode"

推荐答案

将其另存为字符串将缓解该问题，并且如果您决定支持可能有也可能没有的外国邮政编码，也将有助于面向未来的事情其中的字母.

Saving it as a string instead will alleviate that issue, and also would help future-proof things if you decide to support foreign ZIP codes which may or may not have letters in them.

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