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Contents
module VirtualBox
module Proxies
# A relationship which can be described as a collection, which
# is a set of items.
class Collection < Array
attr_reader :parent
def initialize(parent, item_klass=nil, *args)
super()
@parent = parent
@item_klass = item_klass
@other = args
end
# Creates a new item for this collection and returns the
# instance. The item is automatically put into this
# collection. `create` happens immediately, meaning that even
# without a `save`, the item will already exist.
def create(*args)
item = nil
if @item_klass.respond_to?(:create)
args = @other + args
item = @item_klass.create(self, *args)
self << item
end
item
end
# Returns the errors associated with all the items in this
# collection
def errors
collect do |item|
item.respond_to?(:errors) ? item.errors : {}
end
end
def <<(item)
item.added_to_relationship(self) if item.respond_to?(:added_to_relationship)
push(item)
end
def clear
each do |item|
delete(item)
end
end
def delete(item, no_callback=false)
return unless super(item)
item.removed_from_relationship(self) if !no_callback && item.respond_to?(:removed_from_relationship)
end
end
end
end
Version data entries
18 entries across 18 versions & 3 rubygems