55 lines
1.2 KiB
Python
55 lines
1.2 KiB
Python
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from django.db.utils import DatabaseError
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class AmbiguityError(Exception):
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"""More than one migration matches a name prefix."""
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pass
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class BadMigrationError(Exception):
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"""There's a bad migration (unreadable/bad format/etc.)."""
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pass
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class CircularDependencyError(Exception):
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"""There's an impossible-to-resolve circular dependency."""
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pass
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class InconsistentMigrationHistory(Exception):
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"""An applied migration has some of its dependencies not applied."""
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pass
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class InvalidBasesError(ValueError):
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"""A model's base classes can't be resolved."""
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pass
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class IrreversibleError(RuntimeError):
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"""An irreversible migration is about to be reversed."""
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pass
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class NodeNotFoundError(LookupError):
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"""An attempt on a node is made that is not available in the graph."""
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def __init__(self, message, node, origin=None):
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self.message = message
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self.origin = origin
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self.node = node
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def __str__(self):
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return self.message
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def __repr__(self):
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return "NodeNotFoundError(%r)" % (self.node,)
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class MigrationSchemaMissing(DatabaseError):
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pass
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class InvalidMigrationPlan(ValueError):
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pass
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