Module: HasHierarchy::InstanceMethods

Defined in:
lib/has_hierarchy.rb

Instance Method Summary collapse

Instance Method Details

#child_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/has_hierarchy.rb', line 118

def child_of?(node)
  node.id == parent_id
end

#leaf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/has_hierarchy.rb', line 106

def leaf?
  children.count == 0
end

#move_children_to_parent ⇒ Object 



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# File 'lib/has_hierarchy.rb', line 126

def move_children_to_parent
  children.each do |c|
    c.parent = self.parent
    c.save
  end
end

#parent_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/has_hierarchy.rb', line 114

def parent_of?(node)
  node.parent_id == id
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/has_hierarchy.rb', line 110

def root?
  parent_id.nil?
end

#sibling_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/has_hierarchy.rb', line 122

def sibling_of?(node)
  parent_id == node.parent_id and id != node.id
end