Module: ActsAsTree::InstanceMethods

Defined in:
lib/acts_as_tree.rb

Instance Method Summary collapse

Instance Method Details

#ancestors ⇒ Object

Returns list of ancestors, starting from parent until root.

subchild1.ancestors # => [child1, root]



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# File 'lib/acts_as_tree.rb', line 123

def ancestors
  node, nodes = self, []
  nodes << node = node.parent while node.parent
  nodes
end

#root ⇒ Object

Returns the root node of the tree.



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# File 'lib/acts_as_tree.rb', line 130

def root
  node = self
  node = node.parent while node.parent
  node
end

#self_and_children ⇒ Object

Returns children (without subchildren) and current node itself.

root.self_and_children # => [root, child1]



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# File 'lib/acts_as_tree.rb', line 153

def self_and_children
  [self] + self.children
end

#self_and_siblings ⇒ Object

Returns all siblings and a reference to the current node.

subchild1.self_and_siblings # => [subchild1, subchild2]



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# File 'lib/acts_as_tree.rb', line 146

def self_and_siblings
  parent ? parent.children : self.class.roots
end

#siblings ⇒ Object

Returns all siblings of the current node.

subchild1.siblings # => [subchild2]



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# File 'lib/acts_as_tree.rb', line 139

def siblings
  self_and_siblings - [self]
end