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Contents
module Refinery
class MenuItem < HashWithIndifferentAccess
class << self
def attributes
[:title, :parent_id, :lft, :rgt, :depth, :url, :menu, :menu_match]
end
def apply_attributes!
attributes.each do |attribute|
class_eval %{
def #{attribute}
@#{attribute} ||= self[:#{attribute}]
end
} unless self.respond_to?(attribute)
class_eval %{
def #{attribute}=(attr)
@#{attribute} = attr
end
} unless self.respond_to?(:"#{attribute}=")
end
end
end
def original_id
@original_id ||= self[:id]
end
def original_type
@original_type ||= self[:type]
end
apply_attributes!
def ancestors
return @ancestors if @ancestors
@ancestors = []
p = self
@ancestors << p until(p = p.parent).nil?
@ancestors
end
def children
@children ||= if has_children?
menu.select { |item| item.original_type == original_type && item.parent_id == original_id }
else
[]
end
end
def descendants
@descendants ||= if has_descendants?
menu.select{|item| item.original_type == original_type && item.lft > lft && item.rgt < rgt}
else
[]
end
end
def has_children?
@has_children ||= (rgt > lft + 1)
end
# really, they're the same.
alias_method :has_descendants?, :has_children?
def has_parent?
!parent_id.nil?
end
def inspect
hash = {}
self.class.attributes.each do |attribute|
hash[attribute] = self[attribute]
end
hash.inspect
end
def parent
@parent ||= (menu.detect{|item| item.original_type == original_type && item.original_id == parent_id} if has_parent?)
end
def siblings
@siblings ||= ((has_parent? ? parent.children : menu.roots) - [self])
end
alias_method :shown_siblings, :siblings
end
end
Version data entries
8 entries across 8 versions & 1 rubygems