Module: DateName

Defined in:
lib/dev_flow/date_name.rb

Class Method Summary collapse

Class Method Details

.zh(from_date, to_date = DateTime.now) ⇒ Object

return the name of ‘from_date` on the view point of `to_date`



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/dev_flow/date_name.rb', line 5

def self.zh from_date, to_date = DateTime.now
  from_date = DateTime.parse(from_date) if from_date.is_a?(String)
  to_date = DateTime.parse(to_date) if to_date.is_a?(String)
  days = (from_date - to_date).to_i

  case days
  when -3 then "大前天"
  when -2 then "前天"
  when -1 then "昨天"
  when 0 then "今天"
  when 1 then "明天"
  when 2 then "后天"
  when 3 then "大后天"
  when -9 .. -4 then "#{(0-days).to_s}天前"
  when 4 .. 9 then "#{days.to_s}天后"
  else
    from_date.year == to_date.year ? from_date.strftime("%m月%d日") 
                                   :  from_date.strftime("%Y年%m月%d日")
  end
end