This method is deprecated or moved on the latest stable version.
The last existing version (v2.3.8) is shown here.
advance(options)
public
Provides precise Date calculations for years,
months, and days. The options parameter takes a hash with any of
these keys: :years,:months,:weeks,:days.
# File activesupport/lib/active_support/core_ext/date/calculations.rb, line 94
def advance(options)
options = options.dup
d = self
d = d >> options.delete(:years) * 12 if options[:years]
d = d >> options.delete(:months) if options[:months]
d = d + options.delete(:weeks) * 7 if options[:weeks]
d = d + options.delete(:days) if options[:days]
d
end