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Versions: 10
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Contents
module Toy
class Attribute
attr_reader :model, :name, :type, :options
def initialize(model, name, type, options={})
options.assert_valid_keys(:default, :virtual, :abbr)
@model, @name, @type, @options = model, name.to_s, type, options
@virtual = options.fetch(:virtual, false)
if abbr?
options[:abbr] = abbr.to_s
model.alias_attribute(abbr, name)
end
model.attributes[name.to_s] = self
end
def from_store(value)
value = default if default? && value.nil?
type.from_store(value, self)
end
def to_store(value)
value = default if default? && value.nil?
type.to_store(value, self)
end
def default
if options.key?(:default)
default = options[:default]
if default.respond_to?(:call)
backwards_compatible_call(default)
else
default
end
else
type.respond_to?(:store_default) ? type.store_default : nil
end
end
def default?
options.key?(:default) || type.respond_to?(:store_default)
end
def virtual?
@virtual
end
def persisted?
!virtual?
end
def abbr?
options.key?(:abbr)
end
def abbr
options[:abbr]
end
def persisted_name
abbr? ? abbr : name
end
def eql?(other)
self.class.eql?(other.class) &&
model == other.model &&
name == other.name
end
alias :== :eql?
private
def backwards_compatible_call(block)
if block.arity == 1
block.call(model)
else
block.call
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems