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tabo / django-treebeard

Efficient tree implementations for Django 1.0+ :: https://tabo.pe/projects/django-treebeard/

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django-treebeard / treebeard / exceptions.py

Tag
1.6
  • b510c7559b91
  • 24 loc
  • 617 bytes
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"Treebeard exceptions"


class InvalidPosition(Exception):
    "Raised when passing an invalid pos value"


class InvalidMoveToDescendant(Exception):
    "Raised when attemping to move a node to one of it's descendants."


class MissingNodeOrderBy(Exception):
    """
    Raised when an operation needs a missing
    :attr:`~treebeard.MP_Node.node_order_by` attribute
    """


class PathOverflow(Exception):
    """
    Raised when trying to add or move a node to a position where no more nodes
    can be added (see :attr:`~treebeard.MP_Node.path` and
    :attr:`~treebeard.MP_Node.alphabet` for more info)
    """