Module: SmartEnum::MonetizeInterop

Defined in:
lib/smart_enum/monetize_interop.rb

Constant Summary collapse

CENTS_SUFFIX = 
/_cents\z/

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.disable_memoization! ⇒ Object 



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# File 'lib/smart_enum/monetize_interop.rb', line 44

def self.disable_memoization!
  @memoize_method_value = false
end

.memoize_method_value ⇒ Object 



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# File 'lib/smart_enum/monetize_interop.rb', line 40

def self.memoize_method_value
  @memoize_method_value
end

Instance Method Details

#monetize(cents_field_name, as: nil, **opts) ⇒ Object

Note: this ignores the currency column since we only ever monetize things as USD. If that changes this should start reading the currency column.



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# File 'lib/smart_enum/monetize_interop.rb', line 12

def monetize(cents_field_name, as: nil, **opts)
  if opts.any?
    fail "unsupported options: #{opts.keys.join(',')}"
  end

  attr_def = attribute_set[cents_field_name.to_sym]
  if !attr_def
    fail "no attribute called #{cents_field_name}, (Do you need to add '_cents'?)"
  end

  if attr_def.types != INTEGER
    fail "attribute #{cents_field_name.inspect} can't monetize, only Integer is allowed"
  end

  money_attribute = as || cents_field_name.to_s.sub(CENTS_SUFFIX, '')

  define_method(money_attribute) do
    if MonetizeInterop.memoize_method_value
      @money_cache ||= {}
      @money_cache[money_attribute] ||= Money.new(public_send(cents_field_name))
    else
      Money.new(public_send(cents_field_name))
    end
  end
end