How to add 10 days to current time in Rails

I tried doing something like

Time.now + 5.days

but that doesn't work, even though I vaguely remember seeing, and being very impressed, with being able to do something like 2.years etc.

How do I do that in Rails 3?

Use

Time.now + 10.days

or even

10.days.from_now

Both definitely work. Are you sure you're in Rails and not just Ruby?

If you definitely are in Rails, where are you trying to run this from? Note that Active Support has to be loaded.

days, years, etc., are part of Active Support, So this won't work in irb, but it should work in rails console.

This definitely works and I use this wherever I need to add days to the current date:

Date.today + 5

Some other options, just for reference

-10.days.ago
# Available in Rails 4
DateTime.now.days_ago(-10)

Just list out all options I know:

[1] Time.now + 10.days
[2] 10.days.from_now
[3] -10.days.ago
[4] DateTime.now.days_ago(-10)
[5] Date.today + 10

So now, what is the difference between them if we care about the timezone:

Try this on Rails

Time.new + 10.days

Try this on Ruby

require 'date'
DateTime.now.next_day(10).to_time

Related