Class: Integer

Inherits:
Object show all
Defined in:
lib/active_support/core_ext/integer/time.rb,
lib/active_support/core_ext/integer/multiple.rb,
lib/active_support/core_ext/integer/inflections.rb

Instance Method Summary collapse

Instance Method Details

#monthsObject Also known as: month

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

While these methods provide precise calculation when used as in the examples above, care should be taken to note that this is not true if the result of months, years, etc is converted before use:

# equivalent to 30.days.to_i.from_now
1.month.to_i.from_now

# equivalent to 365.25.days.to_f.from_now
1.year.to_f.from_now

In such cases, Ruby's core Date and Time should be used for precision date and time arithmetic.


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# File 'lib/active_support/core_ext/integer/time.rb', line 35

def months
  ActiveSupport::Duration.new(self * 30.days, [[:months, self]])
end

#multiple_of?(number) ⇒ Boolean

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

Returns:

  • (Boolean)

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# File 'lib/active_support/core_ext/integer/multiple.rb', line 7

def multiple_of?(number)
  number != 0 ? self % number == 0 : zero?
end

#ordinalObject

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"

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# File 'lib/active_support/core_ext/integer/inflections.rb', line 26

def ordinal
  ActiveSupport::Inflector.ordinal(self)
end

#ordinalizeObject

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"

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# File 'lib/active_support/core_ext/integer/inflections.rb', line 13

def ordinalize
  ActiveSupport::Inflector.ordinalize(self)
end

#yearsObject Also known as: year


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# File 'lib/active_support/core_ext/integer/time.rb', line 40

def years
  ActiveSupport::Duration.new(self * 365.25.days, [[:years, self]])
end