Class: Money
- Inherits:
-
Object
show all
- Extended by:
- Forwardable
- Includes:
- Comparable
- Defined in:
- lib/money/money.rb,
lib/money/errors.rb,
lib/money/helpers.rb,
lib/money/version.rb,
lib/money/currency.rb,
lib/money/allocator.rb,
lib/money/null_currency.rb,
lib/money/currency/loader.rb
Defined Under Namespace
Modules: Helpers
Classes: Allocator, Currency, Error, IncompatibleCurrencyError, NullCurrency, ReverseOperationProxy
Constant Summary
collapse
- NULL_CURRENCY =
NullCurrency.new.freeze
- VERSION =
"0.14.7"
Class Attribute Summary collapse
Instance Attribute Summary collapse
Class Method Summary
collapse
Instance Method Summary
collapse
Constructor Details
#initialize(value, currency) ⇒ Money
Returns a new instance of Money.
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# File 'lib/money/money.rb', line 93
def initialize(value, currency)
raise ArgumentError if value.nan?
@currency = Helpers.value_to_currency(currency)
@value = value.round(@currency.minor_units)
freeze
end
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Class Attribute Details
.default_currency ⇒ Object
Returns the value of attribute default_currency.
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# File 'lib/money/money.rb', line 14
def default_currency
@default_currency
end
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.parser ⇒ Object
Returns the value of attribute parser.
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# File 'lib/money/money.rb', line 14
def parser
@parser
end
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Instance Attribute Details
#currency ⇒ Object
Returns the value of attribute currency.
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# File 'lib/money/money.rb', line 10
def currency
@currency
end
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#value ⇒ Object
Returns the value of attribute value.
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# File 'lib/money/money.rb', line 10
def value
@value
end
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Class Method Details
.current_currency ⇒ Object
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# File 'lib/money/money.rb', line 64
def current_currency
Thread.current[:money_currency]
end
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.current_currency=(currency) ⇒ Object
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# File 'lib/money/money.rb', line 68
def current_currency=(currency)
Thread.current[:money_currency] = currency
end
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.default_settings ⇒ Object
.from_cents(cents, currency = nil) ⇒ Object
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# File 'lib/money/money.rb', line 38
def from_cents(cents, currency = nil)
new(cents.round.to_f / 100, currency)
end
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.from_subunits(subunits, currency_iso, format: :iso4217) ⇒ Object
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# File 'lib/money/money.rb', line 42
def from_subunits(subunits, currency_iso, format: :iso4217)
currency = Helpers.value_to_currency(currency_iso)
subunit_to_unit_value = if format == :iso4217
currency.subunit_to_unit
elsif format == :stripe
Helpers::STRIPE_SUBUNIT_OVERRIDE.fetch(currency.iso_code, currency.subunit_to_unit)
else
raise ArgumentError, "unknown format #{format}"
end
value = Helpers.value_to_decimal(subunits) / subunit_to_unit_value
new(value, currency)
end
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.new(value = 0, currency = nil) ⇒ Object
Also known as:
from_amount
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# File 'lib/money/money.rb', line 16
def new(value = 0, currency = nil)
value = Helpers.value_to_decimal(value)
currency = Helpers.value_to_currency(currency)
if value.zero?
@@zero_money ||= {}
@@zero_money[currency.iso_code] ||= super(Helpers::DECIMAL_ZERO, currency)
else
super(value, currency)
end
end
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.parse(*args, **kwargs) ⇒ Object
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# File 'lib/money/money.rb', line 34
def parse(*args, **kwargs)
parser.parse(*args, **kwargs)
end
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.rational(money1, money2) ⇒ Object
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# File 'lib/money/money.rb', line 57
def rational(money1, money2)
money1.send(:arithmetic, money2) do
factor = money1.currency.subunit_to_unit * money2.currency.subunit_to_unit
Rational((money1.value * factor).to_i, (money2.value * factor).to_i)
end
end
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.with_currency(new_currency) ⇒ Object
Set Money.default_currency inside the supplied block, resets it to the previous value when done to prevent leaking state. Similar to I18n.with_locale and ActiveSupport’s Time.use_zone. This won’t affect instances being created with explicitly set currency.
.zero(currency = NULL_CURRENCY) ⇒ Object
Also known as:
empty
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# File 'lib/money/money.rb', line 29
def zero(currency = NULL_CURRENCY)
new(0, currency)
end
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Instance Method Details
#*(numeric) ⇒ Object
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# File 'lib/money/money.rb', line 153
def *(numeric)
unless numeric.is_a?(Numeric)
Money.deprecate("Multiplying Money with #{numeric.class.name} is deprecated and will be removed in the next major release.")
end
Money.new(value.to_r * numeric, currency)
end
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#+(other) ⇒ Object
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# File 'lib/money/money.rb', line 141
def +(other)
arithmetic(other) do |money|
Money.new(value + money.value, calculated_currency(money.currency))
end
end
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#-(other) ⇒ Object
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# File 'lib/money/money.rb', line 147
def -(other)
arithmetic(other) do |money|
Money.new(value - money.value, calculated_currency(money.currency))
end
end
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#-@ ⇒ Object
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# File 'lib/money/money.rb', line 130
def -@
Money.new(-value, currency)
end
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#/(numeric) ⇒ Object
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# File 'lib/money/money.rb', line 160
def /(numeric)
raise "[Money] Dividing money objects can lose pennies. Use #split instead"
end
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#<=>(other) ⇒ Object
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# File 'lib/money/money.rb', line 134
def <=>(other)
return unless other.respond_to?(:to_money)
arithmetic(other) do |money|
value <=> money.value
end
end
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#==(other) ⇒ Object
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# File 'lib/money/money.rb', line 168
def ==(other)
eql?(other)
end
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#abs ⇒ Object
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# File 'lib/money/money.rb', line 258
def abs
Money.new(value.abs, currency)
end
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#allocate(splits, strategy = :roundrobin) ⇒ Object
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# File 'lib/money/money.rb', line 278
def allocate(splits, strategy = :roundrobin)
Money::Allocator.new(self).allocate(splits, strategy)
end
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#allocate_max_amounts(maximums) ⇒ Object
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# File 'lib/money/money.rb', line 283
def allocate_max_amounts(maximums)
Money::Allocator.new(self).allocate_max_amounts(maximums)
end
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#as_json(*args) ⇒ Object
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# File 'lib/money/money.rb', line 254
def as_json(*args)
to_s
end
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#calculate_splits(num) ⇒ Hash<Money, Integer>
Calculate the splits evenly without losing pennies. Returns the number of high and low splits and the value of the high and low splits. Where high represents the Money value with the extra penny and low a Money without the extra penny.
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# File 'lib/money/money.rb', line 310
def calculate_splits(num)
raise ArgumentError, "need at least one party" if num < 1
subunits = self.subunits
low = Money.from_subunits(subunits / num, currency)
high = Money.from_subunits(low.subunits + 1, currency)
num_high = subunits % num
{}.tap do |result|
result[high] = num_high if num_high > 0
result[low] = num - num_high
end
end
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#cents ⇒ Object
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# File 'lib/money/money.rb', line 109
def cents
(value * 100).to_i
end
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#clamp(min, max) ⇒ Object
Clamps the value to be within the specified minimum and maximum. Returns self if the value is within bounds, otherwise a new Money object with the closest min or max value.
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# File 'lib/money/money.rb', line 332
def clamp(min, max)
raise ArgumentError, 'min cannot be greater than max' if min > max
clamped_value = min if self.value < min
clamped_value = max if self.value > max
if clamped_value.nil?
self
else
Money.new(clamped_value, self.currency)
end
end
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#coerce(other) ⇒ Object
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# File 'lib/money/money.rb', line 203
def coerce(other)
raise TypeError, "Money can't be coerced into #{other.class}" unless other.is_a?(Numeric)
[ReverseOperationProxy.new(other), self]
end
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#encode_with(coder) ⇒ Object
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# File 'lib/money/money.rb', line 104
def encode_with(coder)
coder['value'] = @value.to_s('F')
coder['currency'] = @currency.iso_code
end
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#eql?(other) ⇒ Boolean
TODO: Remove once cross-currency mathematical operations are no longer allowed
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# File 'lib/money/money.rb', line 173
def eql?(other)
return false unless other.is_a?(Money)
return false unless currency.compatible?(other.currency)
value == other.value
end
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#floor ⇒ Object
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# File 'lib/money/money.rb', line 262
def floor
Money.new(value.floor, currency)
end
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#fraction(rate) ⇒ Object
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# File 'lib/money/money.rb', line 270
def fraction(rate)
raise ArgumentError, "rate should be positive" if rate < 0
result = value / (1 + rate)
Money.new(result, currency)
end
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#init_with(coder) ⇒ Object
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# File 'lib/money/money.rb', line 100
def init_with(coder)
initialize(Helpers.value_to_decimal(coder['value']), coder['currency'])
end
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#inspect ⇒ Object
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# File 'lib/money/money.rb', line 164
def inspect
"#<#{self.class} value:#{self} currency:#{self.currency}>"
end
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#no_currency? ⇒ Boolean
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# File 'lib/money/money.rb', line 126
def no_currency?
currency.is_a?(NullCurrency)
end
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#round(ndigits = 0) ⇒ Object
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# File 'lib/money/money.rb', line 266
def round(ndigits=0)
Money.new(value.round(ndigits), currency)
end
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Split money amongst parties evenly without losing pennies.
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# File 'lib/money/money.rb', line 295
def split(num)
calculate_splits(num).sum([]) { |value, count| Array.new(count, value) }
end
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#subunits(format: :iso4217) ⇒ Object
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# File 'lib/money/money.rb', line 114
def subunits(format: :iso4217)
subunit_to_unit_value = if format == :iso4217
@currency.subunit_to_unit
elsif format == :stripe
Helpers::STRIPE_SUBUNIT_OVERRIDE.fetch(@currency.iso_code, @currency.subunit_to_unit)
else
raise ArgumentError, "unknown format #{format}"
end
(@value * subunit_to_unit_value).to_i
end
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#to_d ⇒ Object
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# File 'lib/money/money.rb', line 222
def to_d
value
end
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#to_json(options = {}) ⇒ Object
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# File 'lib/money/money.rb', line 250
def to_json(options = {})
to_s
end
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#to_liquid ⇒ Object
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# File 'lib/money/money.rb', line 246
def to_liquid
cents
end
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#to_money(curr = nil) ⇒ Object
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# File 'lib/money/money.rb', line 208
def to_money(curr = nil)
if !curr.nil? && no_currency?
return Money.new(value, curr)
end
curr = Helpers.value_to_currency(curr)
unless currency.compatible?(curr)
Money.deprecate("mathematical operation not permitted for Money objects with different currencies #{curr} and #{currency}. " \
"A Money::IncompatibleCurrencyError will raise in the next major release")
end
self
end
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#to_s(style = nil) ⇒ Object
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# File 'lib/money/money.rb', line 226
def to_s(style = nil)
units = case style
when :legacy_dollars
2
when :amount, nil
currency.minor_units
else
raise ArgumentError, "Unexpected style: #{style}"
end
rounded_value = value.round(units)
if units == 0
sprintf("%d", rounded_value)
else
sign = rounded_value < 0 ? '-' : ''
rounded_value = rounded_value.abs
sprintf("%s%d.%0#{units}d", sign, rounded_value.truncate, rounded_value.frac * (10 ** units))
end
end
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