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Versions: 6
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Stored size: 1.36 KB
Contents
module Id
module Model
module TypeCasts
def self.cast(type, value)
casts.fetch(type, Identity).new(value).cast
end
protected
def self.register(cast)
casts[cast.type] = cast
end
private
def self.casts
@casts ||= {}
end
class Cast
def initialize(value)
@value = value
end
def cast
value.is_a?(type) ? value : conversion
end
def type
self.class.type
end
def conversion
raise NotImplementedError
end
private
def self.type
raise NotImplementedError
end
attr_reader :value
end
class Identity < Cast
def cast
value
end
end
class Date < Cast
def self.type
::Date
end
def conversion
::Date.parse value
end
TypeCasts.register(self)
end
class Time < Cast
def self.type
::Time
end
def conversion
::Time.parse value
end
TypeCasts.register(self)
end
class Money < Cast
def self.type
::Money
end
def conversion
::Money.new value.to_i
end
TypeCasts.register(self)
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems