Time difference in hours

Question

I am trying to get the difference in hours for two different Time instances. I get these values from the DB as a :datetime column

How can I do this so that it inclu

Answer 1

in_hours (Rails 6.1+)

Rails 6.1 introduces new ActiveSupport::Duration conversion methods like in_seconds, in_minutes, in_hours, in_days, in_weeks, in_months, and in_years.

As a result, now, your problem can be solved as:

date_1 = Time.parse('2020-10-19 00:00:00 UTC')
date_2 = Time.parse('2020-10-19 03:35:38 UTC') 

(date_2 - date_1).seconds.in_hours.to_i
# => 3

Here is a link to the corresponding PR.