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require "virtus"
module Representable
module Coercion
class Coercer
def initialize(type)
@type = type
end
# This gets called when the :render_filter or :parse_filter option is evaluated.
# Usually the Coercer instance is an element in a Pipeline to allow >1 filters per property.
def call(input, options)
Virtus::Attribute.build(@type).coerce(input)
end
end
def self.included(base)
base.class_eval do
extend ClassMethods
register_feature Coercion
end
end
module ClassMethods
def property(name, options={}, &block)
super.tap do |definition|
return definition unless type = options[:type]
definition.merge!(render_filter: coercer = Coercer.new(type))
definition.merge!(parse_filter: coercer)
end
end
end
end
end
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