Module: StoreAsInt

Defined in:
lib/store_as_int.rb,
lib/store_as_int/base.rb,
lib/store_as_int/money.rb,
lib/store_as_int/exchange_rate.rb

Overview

StoreAsInt

Seamlessly Store Decimal Values as Integers!

Defined Under Namespace

Modules: ActsAsExchangeRateInt, ActsAsMoneyInt Classes: Base, ExchangeRate, Money

Class Method Summary collapse

Class Method Details

.exchange_rate(val) ⇒ Object

Create a new ::ExchangRate

Args

val

value to use with the exchange rate

Examples

er = StoreAsInt.exchange_rate(1.234567890)
    OR
er = StoreAsInt.exchange_rate('1.234567890')
    OR
er = StoreAsInt.exchange_rate(1234567890)

er.to_s => '1.2345'
er.to_s(true) => '%1.2345'
er.inspect => '%1.2345'
er.to_d => 1.234567890
er.value => 1234567890



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# File 'lib/store_as_int.rb', line 26

def self.exchange_rate(val)
  ExchangeRate.new(val)
end

.money(val) ⇒ Object

Create a new ::Money

Args

val

value to use with the money

Examples

er = StoreAsInt.money(1001.23)
    OR
er = StoreAsInt.money("1001.23")
    OR
er = StoreAsInt.money(100123)

er.to_s => '1001.23'
er.to_s(true) => '$1,001.23'
er.inspect => '$1,001.23'
er.to_d => 1001.23
er.value => 100123



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# File 'lib/store_as_int.rb', line 48

def self.money(val)
  Money.new(val)
end

.register(under_scored_class_name, accuracy = 0, number_of_decimals = 0, symbol_to_use = '', &block) ⇒ Object

Register a new StoreAsInt type

Args

under_scored_class_name

@string - method name to use when initializing

accuracy

@integer - power of ten base accuracy when doing conversions

number_of_decimals

@integer - number of decimals to include in to_s method

symbol_to_use

@string - symbol to use in to_s method

&block

@block - override to_s method with a block. called with arguments (self, w_sym) where w_sym is a boolean for whether to include symbol in the returned string

Examples

StoreAsInt.register 'accurate_money', 10000, 2, '$'

am = StoreAsInt::AccurateMoney.new(1.2345)
am.to_s(true) => $1.23
am.value => 12345

StoreAsInt.register 'custom_to_s', 100, 2, '$' do |passed, w_sym|
  "CUSTOM_STR #{passed.negative_sign}#{passed.sym}#{sprintf("%0.0#{passed.decimals}f", passed.to_d.abs)}"
end

cts = StoreAsInt.custom_to_s(-1.23)
cts.to_s(true) => CUSTOM_STR -$1.23
cts.to_s => CUSTOM_STR -$1.23
cts.value => -123



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# File 'lib/store_as_int.rb', line 82

def self.register(under_scored_class_name, accuracy = 0, number_of_decimals = 0, symbol_to_use = '', &block)
  const_name = under_scored_class_name.split('_').map(&:capitalize).join('')

  begin
    const_get(const_name)

    puts "WARNING - #{const_name} Already Registered. Nothing has been done"
  rescue NameError
    puts "  - Registering StoreAsInt::#{const_name}"

    const_set const_name, Class.new(StoreAsInt::Base)

    puts "  - Registering local constants for StoreAsInt::#{const_name}"

    const_get(const_name).const_set 'ACCURACY', (accuracy && accuracy.to_i) || 1
    const_get(const_name).const_set 'DECIMALS', number_of_decimals.to_i
    const_get(const_name).const_set 'SYM', symbol_to_use.to_s
    const_get(const_name).const_set 'STR_FORMAT', block || nil

    puts "  - Registering shortcut method: StoreAsInt.#{under_scored_class_name}(value)"

    define_singleton_method under_scored_class_name.to_sym do |val|
      const_get(const_name).new(val)
    end

    puts "  - StoreAsInt::#{const_name} registered"
  end

  const_get(const_name)
end