Question

我需要改变日期物体。我发现的资源表明,这是我需要做的事,但我并不肯定与本法典有什么关系。我怎么说? 感谢阅读。

module DateTimePatch
    def getlocal
        "works!"
    end
end

DateTime.send(:include, DateTimePatch)

EDIT: So this is what I have

/lib/date_time.rb

class DateTime
  def getlocal
    "it works"
  end
end

青少年

ruby-1.9.2-p0 > Time.now.getlocal
=> 2010-11-09 23:40:36 +1000
ruby-1.9.2-p0 > DateTime.now
 => Tue, 09 Nov 2010 23:40:57 +1000 
ruby-1.9.2-p0 > DateTime.now.getlocal
NoMethodError: undefined method `getlocal  for Tue, 09 Nov 2010 23:41:02 +1000:DateTime

EDIT:

Ok:

ruby-1.9.2-p0 > require  ./lib/date_time.rb 
=> true 
ruby-1.9.2-p0 > DateTime.now.getlocal
NoMethodError: undefined method `now  for DateTime:Class
    from (irb):2
    from /Users/benhartney/.rvm/rubies/ruby-1.9.2-p0/bin/irb:17:in `<main> 
ruby-1.9.2-p0 > DateTime.now
NoMethodError: undefined method `now  for DateTime:Class
    from (irb):3
    from /Users/benhartney/.rvm/rubies/ruby-1.9.2-p0/bin/irb:17:in `<main>

我试图在混合体中添加一个临时的<代码>now方法,以了解该错误是否仍然存在,是否确实发生。日期:现在,在我装上 mix子之前,做的是罚款,但不能确定为什么会这样做?

Answer 1

因此,请在<代码>/code>类别中添加一种方法? Try:

class DateTime
  def get_local
    "works!"
  end
end

Answer 2

不妨请您通过<代码>查询。页: 1

irb(main):002:0> DateTime.now.getlocal
NoMethodError: undefined method `getlocal  for #
        from (irb):2
        from d:/Ruby/bin/irb.bat:20:in ` 
irb(main):003:0> require  ./lib/date_time.rb 
=> true
irb(main):004:0> DateTime.now.getlocal
=> "it works"

UPD: and requiredate , in order to use Mouy s Datetime category.

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