Module: Edge::Forest::InstanceMethods

Defined in:
lib/edge/forest.rb

Instance Method Summary collapse

Instance Method Details

#ancestors ⇒ Object

Returns all ancestors ordered by nearest ancestors first.



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# File 'lib/edge/forest.rb', line 154

def ancestors
  _ancestors = []
  node = self
  while(node = node.parent)
    _ancestors.push(node)
  end

  _ancestors
end

#descendants ⇒ Object

Returns all descendants



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# File 'lib/edge/forest.rb', line 165

def descendants
  if children.present?
    children + children.flat_map(&:descendants)
  else
    []
  end
end

#root ⇒ Object

Returns the root of this node. If this node is root returns self.



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# File 'lib/edge/forest.rb', line 138

def root
  parent ? parent.root : self
end

#root? ⇒ Boolean

Returns true is this node is a root or false otherwise

Returns:

  • (Boolean) 


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# File 'lib/edge/forest.rb', line 143

def root?
  !self[forest_foreign_key]
end

#siblings ⇒ Object

Returns all sibling nodes (nodes that have the same parent). If this node is a root node it returns an empty array.



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# File 'lib/edge/forest.rb', line 149

def siblings
  parent ? parent.children - [self] : []
end