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Versions: 14
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Contents
module PushType
module Nestable
extend ActiveSupport::Concern
included do
validate :parent_accepts_child
end
def child_nodes
self.class.child_nodes
end
def custom_child_order?
self.class.child_order.present?
end
def sortable?
!custom_child_order?
end
def descendable?
!child_nodes.empty?
end
def children
return super() unless custom_child_order?
super.reorder(self.class.child_order)
end
private
def parent_accepts_child
if parent_id.present?
unless parent.child_nodes.include?(self.class.name.underscore)
errors.add :parent_id, 'does not accept this child'
end
end
end
module ClassMethods
attr_reader :child_order
def child_nodes
types = @child_nodes || PushType.config.root_nodes
PushType.subclasses_from_list(:node, types)
end
def has_child_nodes(*args)
if args.last.is_a? Hash
opts = args.pop
@child_order = case opts[:order]
when :blog then ['published_at DESC', 'created_at DESC']
else opts[:order]
end
else
@child_order = nil
end
@child_nodes = args
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems