是否可以在 Rails 中的日期和月份中添加前导零？日期选择和日期时间选择？
我试图在 date_select 中的日期和月份中添加前导零，对于我在文档中看到的所有内容，您只能指定 :use_month_numbers 和 :use_short_month 但不是 :leading_zeros =>;正确。
查看rails代码，我发现date_helper.rb中有以下代码：
File: actionpack/lib/action_view/helpers/date_helper.rb
def select_day
if @options[:use_hidden] || @options[:discard_day]
build_hidden(:day, day)
else
build_options_and_select(:day, day, :start => 1, :end => 31, :leading_zeros => false)
end
end
一行：
leading_zeros = options.delete(:leading_zeros)
在 DateTimeSelector 下的第 856 行，有这样 我的印象是，即使您设法覆盖第一个方法，并使用 leading_zeros => 调用 ，它只会结束你的聚会，所以不可能这样做。DateTimeSelector ， true
现在，我的 ruby-fu/rails-fu 并不是那么传奇，所以我想知道 – 我可以覆盖我的 Rails 应用程序中的类，仅重新实现我想要的方法以支持leading_zeros，或者什么是最好的方法如何让它发挥作用？
编辑：如果有人问为什么他甚至需要前导零？，好吧，这不是一个交易破坏者，也不是必要，但我希望能够这样做......只是为了整个应用程序的一致性。日期在应用程序和报告中以日/月/年格式显示，但在创建记录时，用户会发现不同的格式。这并不重要，只是一个设计选择。
I'm trying to add leading zeros to the days and months in a date_select, and for all I can see in the docs you can only specify :use_month_numbers and :use_short_month
but not :leading_zeros => true.
Looking at the rails code, I found that the following code in date_helper.rb:
File: actionpack/lib/action_view/helpers/date_helper.rb
def select_day
if @options[:use_hidden] || @options[:discard_day]
build_hidden(:day, day)
else
build_options_and_select(:day, day, :start => 1, :end => 31, :leading_zeros => false)
end
end
And in line 856 under DateTimeSelector, there's a line that goes:
leading_zeros = options.delete(:leading_zeros)
So I get the impression that even if you managed to override the first method, and called DateTimeSelector with leading_zeros => true, that it would just end your party there, so it's not possible to do this this way.
Now, my ruby-fu / rails-fu is not that legendary so I was wondering – could I override the class in my rails app reimplementing only the method(s) I want in order to support leading_zeros, or what would be the best way way to get this to work?
EDIT: In case someone's asking why does he even need leading zeroes?, well, it's not a deal breaker, and it's not necessary, but I would like to be able to do this… just for consistency across the app. The dates are displayed with a dd/mm/yy format across app and in reports, but when creating the records the user finds a different format. It's not so important, just a design choice.
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无论如何......我最终通过重载rails应用程序中的方法解决了这个问题（作为测试，不在生产中使用它）。我想我可以关闭它，因为“rails 不支持日期中的前导零”。
Anyway… I finally solved this by overloading the method in the rails app (as a test, not using it in production). I guess I can close this as "rails does not support leading zeros in dates".
很简单，只需使用这样的格式：“%-d %-m”
It's pretty simple, just use format like this: "%-d %-m"