class Domain < ActiveRecord::Base attr_accessor :parent_synced # this goes before acts_as_nested_interval call before_save do self.name_reversed = name.reverse if name_changed? sync_parent end after_save :sync_children # this goes after sync_parent, to order callbacks correctly acts_as_nested_interval virtual_root: true validate :domain_ownership def domain_ownership # non-TLD validation errors[:name] = "cannot be a TLD or a reserved domain" if Tld.include?(name) # If parent domain is on our system, the user be permitted to manage current domain. # He either owns parent, or is permitted to current domain or to an ancestor. if parent_domain.present? && !parent_domain.can_be_managed_by_current_user? @domain_ownership_failed = true errors[:name] = "issue, the parent domain `#{parent_domain.name}` is registered to another user" end end # If current user present authorize it # If current user not present, just allow (rake tasks etc) def can_be_managed_by_current_user? return true if User.current.nil? UserAbility::CRUD.all?{|operation| User.current.can?(operation, self)} end # Returns the first immediate parent, if exists (and caches the search) def parent_domain return nil if name.nil? @parent_domain ||= {} @parent_domain[name] ||= _parent_domain end # subdomains in the system for the current domain name def subdomains Domain.where(:name_reversed.matches => "#{name_reversed}.%") end def subdomain_of?(domain) name.end_with?('.' + domain.name) end # override def self.rebuild_nested_interval_tree! skip_callback :update, :before, :sync_children super set_callback :update, :before, :sync_children end # Syncs with nested interval when a child is added and parent exists def sync_parent self.parent = parent_domain if !@parent_synced && new_parent? end protected def new_parent? parent_domain.present? && self.parent_id != parent_domain.id end # Returns the first immediate parent, if exists (does not cache the search) # For example "sub.sub.domain.com"'s parent might be "sub.domain.com" or "domain.com" def _parent_domain segments = name.split('.') while segments.size > 1 segments.shift domain = Domain.find_by_name(segments.join('.')) return domain if domain.present? end return nil end # only immediate children def children_subdomains descendants = subdomains.preorder.to_a first = descendants.first return [] unless first.present? # only immediate children depth = first.depth descendants.select { |d| d.depth == depth } end # Syncs with nested interval when the parent is added later than the children def sync_children children_subdomains.each do |subdomain| subdomain.parent = self subdomain.parent_synced = true # no n+1 subdomain.save! # rest will chain recursively end end end