Module: Sequel::Plugins::Tree::ClassMethods

Defined in:

lib/sequel_tree.rb

Instance Method Summary

• #roots ⇒ Object

  Returns list of all root nodes (those with no parent nodes).

• #roots_dataset ⇒ Object

  Returns the dataset for retrieval of all root nodes.

Instance Method Details

#roots ⇒ Object

Returns list of all root nodes (those with no parent nodes).

TreeClass.roots # => [root1, root2]

# File 'lib/sequel_tree.rb', line 37

def roots
  roots_dataset.all
end

#roots_dataset ⇒ Object

Returns the dataset for retrieval of all root nodes

TreeClass.roots_dataset => Sequel#Dataset

# File 'lib/sequel_tree.rb', line 44

def roots_dataset
  filter(@parent_column => nil).order(@order_column)
end