Method: Forester::Validators#validate_uniqueness_of_fields_combination

Defined in:
lib/forester/tree_node_ext/validators.rb

#validate_uniqueness_of_fields_combination(fields, options = {}) ⇒ Object 



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# File 'lib/forester/tree_node_ext/validators.rb', line 45

def validate_uniqueness_of_fields_combination(fields, options = {})
  options = default_validator_options.merge(options)

  failures = Hash.new(Hash.new([]))

  nodes_of_depth(options[:within_subtrees_of_depth]).each do |subtree|
    visited_nodes = []
    nodes_to_visit =
      if options[:among_siblings_of_depth] == :not_siblings
        subtree.each_node
      else
        nodes_of_depth(options[:among_siblings_of_depth])
      end

    nodes_to_visit.each  do |node|
      visited_nodes.each do |vn|
        next unless all_have_all?(fields, [vn, node])

        if same_values_for_all?(fields, [vn, node])
          k = fields.map { |f| vn.get(f) } # repeated combination of values

          prepare_hash(failures, fields, k)

          add_failure_if_new(failures, fields, k, options[:as_failure].call(vn))
          add_failure(       failures, fields, k, options[:as_failure].call(node))

          return result(failures) if options[:first_failure_only]
        end
      end
      visited_nodes << node
    end
  end

  result(failures)
end