Calculate date difference in ror

For example if you have a @date1 and @date2, and you want a difference between them

@date1 = {firstdate}
@date2 = {Seconddate}
@diff = (@date2.to_date - @date1.to_date).to_i

And you will get a difference in integer. :)

The code given below is explaining the subtraction of timestamp and date.

A timestamp is probably a Time and subtraction gives the number of
seconds between the two. If you convert to Date, subtraction gives
days.

>> Time.now - 18.seconds.ago
=> 17.999993
>> Time.now - 3.days.ago
=> 259199.999989

>> Date.today
=> #
>> Date.today.to_s
=> "2007-06-18"
>> 3.days.ago.to_date.to_s
=> "2007-06-15"

>> Time.now.to_date - 3.days.ago.to_date
=> Rational(3, 1)
>> (Time.now.to_date - 3.days.ago.to_date).to_i
=> 3
>> (Date.today - 3.days.ago.to_date)
=> Rational(3, 1)
>> (Date.today - 3.days.ago.to_date).to_i
=> 3