Class: Brewser::Model::Units::Units

Inherits:
DataMapper::Property::String
  • Object
show all
Defined in:
lib/brewser/model/units.rb

Direct Known Subclasses

Temperature, Time, Volume, Weight, WeightOrVolume

Instance Method Summary collapse

Instance Method Details

#custom? ⇒ Boolean

Declare this property as custom

Returns:

  • (Boolean) 


8
9
10
 
# File 'lib/brewser/model/units.rb', line 8

def custom?
  true
end

#dump(value) ⇒ Object 



35
36
37
38
 
# File 'lib/brewser/model/units.rb', line 35

def dump(value)
  return if value.nil?
  value.u.to_s
end

#load(value) ⇒ Object 



25
26
27
28
29
30
31
32
33
 
# File 'lib/brewser/model/units.rb', line 25

def load(value)
  return if value.nil?
  if !value.u.unitless?
    raise(ArgumentError, "#{value.inspect} is not a #{kind_of}") unless kind_of.nil? or value.u.kind == kind_of
    value.u
  else
    "#{value} #{base_unit}".u
  end
end

#primitive?(value) ⇒ Boolean

Returns:

  • (Boolean) 


21
22
23
 
# File 'lib/brewser/model/units.rb', line 21

def primitive?(value)
  value.is_a?(Unit) && valid_kind?(value)
end

#typecast_to_primitive(value) ⇒ Object 



40
41
42
 
# File 'lib/brewser/model/units.rb', line 40

def typecast_to_primitive(value)
  load(value)
end

#valid_kind?(value) ⇒ Boolean

Compare the values kind (mass, volume, etc) to the object classes kind_of

Parameters:

  • value (Unit) —

    value to be checked

Returns:

  • (Boolean) —

    returns true if value is of the correct kind



16
17
18
 
# File 'lib/brewser/model/units.rb', line 16

def valid_kind?(value)
  value.kind == kind_of
end