ruby - 如何根据本周 ruby 中的日期获取上周的开始日期和结束日期

Question

如何根据本周 ruby (周一至周日)中的日期获取最后一周的开始日期和结束日期

示例:如果日期是 04-feb-15，那么结果应该是 start_date = Monday(26-jan-1015) end_date = Sunday(1-feb-15)

如果日期是 27-feb-15, ，那么结果应该是 start_date = Monday(16-feb-1015) end_date = (22-feb-15)

Answer 1

你可以这样试试:

require 'date'
=> true

date = Date.today
=> #<Date: 2015-02-04 ((2457058j,0s,0n),+0s,2299161j)>

# date.wday return week day
end_date = date-date.wday
=> #<Date: 2015-02-01 ((2457055j,0s,0n),+0s,2299161j)>

start_date = date-date.wday-6
=> #<Date: 2015-01-26 ((2457049j,0s,0n),+0s,2299161j)>

更多操作可以引用这个链接Ruby Doc.