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Contents
# encoding: utf-8
module Dynamoid #:nodoc:
module Associations
module SingleAssociation
include Association
delegate :class, :to => :target
def setter(object)
delete
source.update_attribute(source_attribute, Set[object.id])
self.send(:associate_target, object) if target_association
object
end
def delete
source.update_attribute(source_attribute, nil)
self.send(:disassociate_target, target) if target && target_association
target
end
def create!(attributes = {})
setter(target_class.create!(attributes))
end
def create(attributes = {})
setter(target_class.create!(attributes))
end
# Is this object equal to the association's target?
#
# @return [Boolean] true/false
#
# @since 0.2.0
def ==(other)
target == other
end
# Delegate methods we don't find directly to the target.
#
# @since 0.2.0
def method_missing(method, *args)
if target.respond_to?(method)
target.send(method, *args)
else
super
end
end
def nil?
target.nil?
end
private
# Find the target of the has_one association.
#
# @return [Dynamoid::Document] the found target (or nil if nothing)
#
# @since 0.2.0
def find_target
return if source_ids.empty?
target_class.find(source_ids.first)
end
end
end
end
Version data entries
17 entries across 17 versions & 4 rubygems