Module: Dagraph::NodeModel

Extended by:
ActiveSupport::Concern
Defined in:
lib/dagraph/node_model.rb

Instance Method Summary collapse

Instance Method Details

#child? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 65

def child?
  !root?
end

#child_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 46

def child_of?(node)
  return false if node.nil?
  node.parent_of?(self)
end

#children_at_depth(depth) ⇒ Object 



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# File 'lib/dagraph/node_model.rb', line 33

def children_at_depth(depth)
  self.class.where id: child_edges.where(hops: depth - 1).select(:child_id)
end

#children_to_hash(depth: nil) ⇒ Object 



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# File 'lib/dagraph/node_model.rb', line 29

def children_to_hash(depth: nil)
  graph_to_hash children, :direct_parents, depth: depth
end

#direct_child_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 56

def direct_child_of?(node)
  return false if node.nil?
  node.direct_parent_of?(self)
end

#direct_parent_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 51

def direct_parent_of?(node)
  return false if node.nil?
  direct_children.include?(node)
end

#leaf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 69

def leaf?
  child_edges.empty?
end

#parent_of?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 41

def parent_of?(node)
  return false if node.nil?
  children.include?(node)
end

#parents_to_hash(depth: nil) ⇒ Object 



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# File 'lib/dagraph/node_model.rb', line 25

def parents_to_hash(depth: nil)
  graph_to_hash parents, :direct_children, depth: depth
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dagraph/node_model.rb', line 61

def root?
  parent_edges.empty?
end

#self_and_children ⇒ Object 



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# File 'lib/dagraph/node_model.rb', line 37

def self_and_children
  self.class.where(id: self).or(self.class.where(id: children))
end