exception treebeard.exceptions.InvalidPosition

Raised when passing an invalid pos value

exception treebeard.exceptions.InvalidMoveToDescendant

Raised when attemping to move a node to one of it’s descendants.

exception treebeard.exceptions.NodeAlreadySaved

Raised when attempting to add a node which is already saved to the database.

exception treebeard.exceptions.PathOverflow

Raised when trying to add or move a node to a position where no more nodes can be added (see path and alphabet for more info)

exception treebeard.exceptions.MissingNodeOrderBy

Raised when an operation needs a missing node_order_by attribute