在两个给定时间之间展示15分钟的步骤 [英] display 15-minute steps between two given times

问题描述

我有一个约会表保存2次。开始和结束我想以15分钟的步骤显示所有约会。例如上午10点/ 11点，现在显示我10.15，10.30，10.45在我看来！ Thx for advise！

   -  @ appointment.each do | form | 
 = form.date 
 = form.start_time 
 = form.end_time 
  

解决方案

我有一个班轮，但这是你真正想要的吗？希望这两个日期之间的三角洲并不是太大，下面的代码不是非常有效。

 （时间。 now.to_i..1.hour.from_now.to_i）.to_a.in_groups_of（15.minutes）.collect（&：first）.collect {| t | Time.at（t）} 
  

---

更好的解决方案：

 ＃您的变量
 time_start = Time.now 
 time_end = time_start + 1.hour 
 [time_start] .tap {| array |数组<< array.last + 15.minutes while array.last< time_end} 
  

---

我添加了到到Ruby的时间实例方法：

  class Time 
 def to（to，step = 15.minutes）
 [self] .tap {| array |数组<< array.last + step while array.last< to} 
 end 
 end 
  

所以你最终会得到这样的代码：

  time_start.to（time_end）
  

所有三个解决方案将以包含时间对象的数组结束。

  => [2011-07-22 17:11:11 +0200，2011-07-22 17:26:11 +0200，2011-07-22 17:41:11 +0200，2011-07-22 17:56:11 +0200，2011-07-22 18:11:11 +0200] 
  

I have an appointments table which saves 2 times. start and end. I want to display all appointments in 15 minute steps. e.g. given 10am /11am, now display me 10.15, 10.30, 10.45 in my view! Thx for advise!

[e-mail] do |form|  
  =form.date  
  =form.start_time  
  =form.end_time

解决方案

I have an one-liner, but is this what you really want? And hopefully the delta between this two dates isn't too big, the code below isn't very efficient.

(Time.now.to_i..1.hour.from_now.to_i).to_a.in_groups_of(15.minutes).collect(&:first).collect { |t| Time.at(t) }  

---

Better solution:

# Your variables
time_start = Time.now
time_end = time_start + 1.hour
[time_start].tap { |array| array << array.last + 15.minutes while array.last < time_end }

---

I added to to Ruby's Time instance methods:

class Time
  def to(to, step = 15.minutes)
    [self].tap { |array| array << array.last + step while array.last < to }
  end
end

so you end up with code like this:

time_start.to(time_end)

All three solutions will end in an array containing Time objects of steps.

 => [2011-07-22 17:11:11 +0200, 2011-07-22 17:26:11 +0200, 2011-07-22 17:41:11 +0200, 2011-07-22 17:56:11 +0200, 2011-07-22 18:11:11 +0200] 

这篇关于在两个给定时间之间展示15分钟的步骤的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！