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Contents
module ZTK::DSL::Core::Relations
# @author Zachary Patten <zachary AT jovelabs DOT com>
# @api private
module HasMany
def self.included(base)
base.class_eval do
base.add_relation(:has_many)
base.send(:extend, ZTK::DSL::Core::Relations::HasMany::ClassMethods)
end
end
def has_many_references
@has_many_references ||= {}
end
def get_has_many_reference(key)
if has_many_references.key?(key)
has_many_references[key]
else
has_many_references[key] ||= []
end
end
def set_has_many_reference(key, value)
dataset = get_has_many_reference(key)
dataset.clear
dataset.concat(value)
end
def save_has_many_references
has_many_references.each do |key, dataset|
dataset.each do |data|
# do something to store the data somewhere
end
end
end
# @author Zachary Patten <zachary AT jovelabs DOT com>
module ClassMethods
def has_many(key, options={})
has_many_relations[key] = {
:class_name => key.to_s.classify,
:key => key
}.merge(options)
define_method(key) do |*args|
if args.count == 0
get_has_many_reference(key)
else
send("#{key}=", *args)
end
end
define_method("#{key}=") do |value|
set_has_many_reference(key, value)
end
define_method(key.to_s.singularize) do |id=nil, &block|
options = self.class.has_many_relations[key]
data = options[:class_name].constantize.new(id, &block)
get_has_many_reference(key) << data
klass = self.class.to_s.demodulize.singularize.downcase
data.send("#{klass}=", self)
data
end
end
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems