This method is deprecated or moved on the latest stable version.
The last existing version (v2.3.8) is shown here.
since(seconds)
public
Returns a new DateTime representing the time
a number of seconds since
the instance time Do not use this method in
combination with x.months, use months_since instead!
# File activesupport/lib/active_support/core_ext/date_time/calculations.rb, line 78
def since(seconds)
self + Rational(seconds.round, 86400)
end