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Contents
module Pay
class Currency
include ActionView::Helpers::NumberHelper
attr_reader :attributes
def self.all
@currencies ||= begin
path = Engine.root.join("config", "currencies", "iso.json")
JSON.parse File.read(path)
end
end
# Takes an amount (in cents) and currency and returns the formatted version for the currency
def self.format(amount, currency:, **options)
currency ||= :usd
new(currency).format_amount(amount, **options)
end
def initialize(iso_code)
@attributes = self.class.all[iso_code.to_s.downcase]
end
def format_amount(amount, **options)
number_to_currency(
amount.to_f / subunit_to_unit.to_f,
{
precision: precision + additional_precision(amount),
unit: unit,
separator: separator,
delimiter: delimiter,
format: format
}.compact.merge(options)
)
end
# Returns the precision to display
#
# If 1, returns 0
# If 100, returns 2
# If 1000, returns 3
def precision
subunit_to_unit.digits.count - 1
end
# If amount is 0.8, we want to display $0.008
def additional_precision(amount)
_, decimals = amount.to_s.split(".")
decimals&.length || 0
end
def unit
attributes["unit"]
end
def separator
attributes["separator"]
end
def delimiter
attributes["delimiter"]
end
def format
attributes["format"]
end
def subunit?
subunit.blank?
end
def subunit
attributes["subunit"]
end
def subunit_to_unit
attributes["subunit_to_unit"]
end
end
end
Version data entries
53 entries across 53 versions & 1 rubygems