find_or_create_tree_by_name

gistfile1.rb

  # Addon for classes using https://github.com/stefankroes/ancestry
  # Create the full tree for this root/parent/child if it doesnt yet exist
  # .save! is required to generate ancestry fields so that .children works
  def self.find_or_create_tree_by_name(root_name = nil, parent_name = nil, child_name = nil)
    if root_name.present?
      root = self.find_or_create_by_name(root_name)
      root.save!
      if parent_name.present?
        parent = root.children.find_or_create_by_name(parent_name)
        parent.save!
        if child_name.present?
          child = parent.children.find_or_create_by_name(child_name)
          child.save!
          child
        else
          parent
        end
      else
        root
      end
    end
  end