Forester

Forester's functionality is a superset of RubyTree's that further facilitates the work with tree data structures at the right level of abstraction.

Add this line to your application's Gemfile:

gem 'forester'

And then execute:

$ bundle

Or install it yourself as:

$ gem install forester

Here is a simple example:

serialized_tree = {
  label: 'anything',
  count: 0,
  children: [
    {
      label: 'first child',
      count: 1,
      children: [
        {
          label: 'first grandchild',
          count: 3
        }
      ]
    },
    {
      label: 'second child',
      count: 2
    }
  ]
}

# Any node can have any set of fields

tree = Forester.tree_factory.from_root_hash(serialized_tree, children_key: :children)

all_counts = tree.each_node(traversal: :breadth_first).map { |n| n.get(:count) }
# [0, 1, 2, 3]

tree.add_child_content(label: 'third child')

tree.validate_uniqueness_of_field(:label)
# { is_valid: true, repeated: {}, failures: {} }

tree.as_root_hash
# a hash with the same structure as serialized_tree

The full set of utilities are covered with unit tests, which also serve as usage examples.

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install.

Bug reports and pull requests are welcome on GitHub at https://github.com/eugeniobruno/forester. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.