Module: Arboreal::InstanceMethods

Defined in:

lib/arboreal/instance_methods.rb

Instance Method Summary (collapse)

• - (Object) ancestor_ids
• - (Object) ancestors

  return a scope matching all ancestors of this node.

• - (Object) descendants

  return a scope matching all descendants of this node.

• - (Object) path_string
• - (Object) root

  return the root of the tree.

• - (Object) siblings

  return a scope matching all siblings of this node (NOT including the node itself).

• - (Object) subtree

  return a scope matching all descendants of this node, AND the node itself.

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# File 'lib/arboreal/instance_methods.rb', line 10

def ancestor_ids
  ancestry_string.sub(/^-/, "").split("-").map { |x| x.to_i }
end

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# File 'lib/arboreal/instance_methods.rb', line 15

def ancestors
  model_base_class.scoped(:conditions => ancestor_conditions, :order => :ancestry_string)
end

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# File 'lib/arboreal/instance_methods.rb', line 20

def descendants
  model_base_class.scoped(:conditions => descendant_conditions)
end

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# File 'lib/arboreal/instance_methods.rb', line 6

def path_string
  "#{ancestry_string}#{id}-"
end

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# File 'lib/arboreal/instance_methods.rb', line 35

def root
  ancestors.first || self
end

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# File 'lib/arboreal/instance_methods.rb', line 30

def siblings
  model_base_class.scoped(:conditions => sibling_conditions)
end

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# File 'lib/arboreal/instance_methods.rb', line 25

def subtree
  model_base_class.scoped(:conditions => subtree_conditions)
end