class Integer

# File activesupport/lib/active_support/core_ext/integer/time.rb, line 20
def months
  ActiveSupport::Duration.months(self)
end

Enables the use of time calculations and declarations, like 45.minutes + 2.hours + 4.years.

These methods use Time#advance for precise date calculations when using from_now, ago, etc. as well as adding or subtracting their results from a Time object.

# equivalent to Time.now.advance(months: 1)
1.month.from_now

# equivalent to Time.now.advance(years: 2)
2.years.from_now

# equivalent to Time.now.advance(months: 4, years: 5)
(4.months + 5.years).from_now

# File activesupport/lib/active_support/core_ext/integer/multiple.rb, line 7
def multiple_of?(number)
  number != 0 ? self % number == 0 : zero?
end

Check whether the integer is evenly divisible by the argument.

0.multiple_of?(0)  # => true
6.multiple_of?(5)  # => false
10.multiple_of?(2) # => true

# File activesupport/lib/active_support/core_ext/integer/inflections.rb, line 26
def ordinal
  ActiveSupport::Inflector.ordinal(self)
end

Ordinal returns the suffix used to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.

1.ordinal     # => "st"
2.ordinal     # => "nd"
1002.ordinal  # => "nd"
1003.ordinal  # => "rd"
-11.ordinal   # => "th"
-1001.ordinal # => "st"

# File activesupport/lib/active_support/core_ext/integer/inflections.rb, line 13
def ordinalize
  ActiveSupport::Inflector.ordinalize(self)
end

Ordinalize turns a number into an ordinal string used to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.

1.ordinalize     # => "1st"
2.ordinalize     # => "2nd"
1002.ordinalize  # => "1002nd"
1003.ordinalize  # => "1003rd"
-11.ordinalize   # => "-11th"
-1001.ordinalize # => "-1001st"