search for: self_and_ancestors

...the tree (the one that has a nil parent; should have left_column = 1 too) * roots - root items, in case of multiple roots (the ones that have a nil parent) * level - number indicating the level, a root being level 0 * ancestors - array of all parents, with root as first item * self_and_ancestors - array of all parents and self * siblings - array of all siblings, that are the items sharing the same parent and level * self_and_siblings - array of itself and all siblings * children_count - count of all immediate children * children - array of all immediate childrens...