class ActiveSupport::Duration

Parent:: ProxyObject

Provides accurate date and time measurements using Date#advance and Time#advance, respectively. It mainly supports the methods on Numeric.

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

Attributes

parts[RW]

value[RW]

Public Instance Methods

+(other) Show source

Adds another Duration or a Numeric to this Duration. Numeric values are treated as seconds.

# File activesupport/lib/active_support/duration.rb, line 19
def +(other)
  if Duration === other
    Duration.new(value + other.value, @parts + other.parts)
  else
    Duration.new(value + other, @parts + [[:seconds, other]])
  end
end

-(other) Show source

Subtracts another Duration or a Numeric from this Duration. Numeric values are treated as seconds.

# File activesupport/lib/active_support/duration.rb, line 29
def -(other)
  self + (-other)
end

==(other) Show source

Returns true if other is also a Duration instance with the same value, or if other == value.

# File activesupport/lib/active_support/duration.rb, line 44
def ==(other)
  if Duration === other
    other.value == value
  else
    other == value
  end
end

ago(time = ::Time.current) Show source

Calculates a new Time or Date that is as far in the past as this Duration represents.

# File activesupport/lib/active_support/duration.rb, line 71
def ago(time = ::Time.current)
  sum(-1, time)
end

Also aliased as: until

eql?(other) Show source

# File activesupport/lib/active_support/duration.rb, line 52
def eql?(other)
  other.is_a?(Duration) && self == other
end

from_now(time = ::Time.current)

Alias for: since

since(time = ::Time.current) Show source

Calculates a new Time or Date that is as far in the future as this Duration represents.

# File activesupport/lib/active_support/duration.rb, line 64
def since(time = ::Time.current)
  sum(1, time)
end

Also aliased as: from_now

until(time = ::Time.current)

Alias for: ago