Class: DataMapper::Property::Decimal

Inherits:
Numeric show all
Defined in:
lib/dm-core/property/decimal.rb

Constant Summary collapse

DEFAULT_PRECISION =
10
DEFAULT_SCALE =
0

Constants inherited from Numeric

Numeric::DEFAULT_NUMERIC_MAX, Numeric::DEFAULT_NUMERIC_MIN

Constants inherited from DataMapper::Property

INVALID_NAMES, OPTIONS, PRIMITIVES, VISIBILITY_OPTIONS

Instance Attribute Summary

Attributes inherited from Numeric

#max, #min, #precision, #scale

Attributes inherited from DataMapper::Property

#allow_blank, #allow_nil, #default, #dump_as, #index, #instance_variable_name, #load_as, #model, #name, #options, #reader_visibility, #repository_name, #required, #unique_index, #writer_visibility

Instance Method Summary collapse

Methods included from Typecast::Numeric

#typecast_to_numeric

Methods inherited from Object

#dump, #load, #marshal, #to_child_key, #unmarshal

Methods inherited from DataMapper::Property

accept_options, accepted_options, #allow_blank?, #allow_nil?, #assert_valid_options, #assert_valid_value, #bind, demodulized_names, descendants, determine_class, #determine_visibility, #field, find_class, #get, #get!, inherited, #inspect, #key?, #lazy?, #lazy_load, #lazy_load_properties, #loaded?, nullable, options, primitive, #primitive, #primitive?, #properties, #required?, #serial?, #set, #set!, #typecast, #unique?, #valid?, #value_dumped?, #value_loaded?

Methods included from Equalizer

#equalize

Methods included from Deprecate

#deprecate

Methods included from Subject

#default?, #default_for

Methods included from Assertions

#assert_kind_of

Constructor Details

#initialize(model, name, options = {}) ⇒ Decimal (protected)

Returns a new instance of Decimal.


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# File 'lib/dm-core/property/decimal.rb', line 15

def initialize(model, name, options = {})
  super

  [ :scale, :precision ].each do |key|
    unless @options.key?(key)
      warn "options[#{key.inspect}] should be set for #{self.class}, defaulting to #{send(key).inspect} (#{caller.first})"
    end
  end

  unless @scale >= 0
    raise ArgumentError, "scale must be equal to or greater than 0, but was #{@scale.inspect}"
  end

  unless @precision >= @scale
    raise ArgumentError, "precision must be equal to or greater than scale, but was #{@precision.inspect} and scale was #{@scale.inspect}"
  end
end

Instance Method Details

#typecast_to_primitive(value) ⇒ BigDecimal (protected)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Typecast a value to a BigDecimal

Parameters:

  • value (#to_str, #to_d, Integer)

    value to typecast

Returns:

  • (BigDecimal)

    BigDecimal constructed from value


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# File 'lib/dm-core/property/decimal.rb', line 42

def typecast_to_primitive(value)
  if value.kind_of?(::Integer)
    value.to_s.to_d
  else
    typecast_to_numeric(value, :to_d)
  end
end