2021-03-29 21:50:22 +02:00

162 lines
3.9 KiB
Python

from collections import defaultdict
__all__ = (
"NotRegistered",
"InvalidDocumentError",
"LookUpError",
"DoesNotExist",
"MultipleObjectsReturned",
"InvalidQueryError",
"OperationError",
"NotUniqueError",
"BulkWriteError",
"FieldDoesNotExist",
"ValidationError",
"SaveConditionError",
"DeprecatedError",
)
class NotRegistered(Exception):
pass
class InvalidDocumentError(Exception):
pass
class LookUpError(AttributeError):
pass
class DoesNotExist(Exception):
pass
class MultipleObjectsReturned(Exception):
pass
class InvalidQueryError(Exception):
pass
class OperationError(Exception):
pass
class NotUniqueError(OperationError):
pass
class BulkWriteError(OperationError):
pass
class SaveConditionError(OperationError):
pass
class FieldDoesNotExist(Exception):
"""Raised when trying to set a field
not declared in a :class:`~mongoengine.Document`
or an :class:`~mongoengine.EmbeddedDocument`.
To avoid this behavior on data loading,
you should set the :attr:`strict` to ``False``
in the :attr:`meta` dictionary.
"""
class ValidationError(AssertionError):
"""Validation exception.
May represent an error validating a field or a
document containing fields with validation errors.
:ivar errors: A dictionary of errors for fields within this
document or list, or None if the error is for an
individual field.
"""
errors = {}
field_name = None
_message = None
def __init__(self, message="", **kwargs):
super().__init__(message)
self.errors = kwargs.get("errors", {})
self.field_name = kwargs.get("field_name")
self.message = message
def __str__(self):
return str(self.message)
def __repr__(self):
return f"{self.__class__.__name__}({self.message},)"
def __getattribute__(self, name):
message = super().__getattribute__(name)
if name == "message":
if self.field_name:
message = "%s" % message
if self.errors:
message = f"{message}({self._format_errors()})"
return message
def _get_message(self):
return self._message
def _set_message(self, message):
self._message = message
message = property(_get_message, _set_message)
def to_dict(self):
"""Returns a dictionary of all errors within a document
Keys are field names or list indices and values are the
validation error messages, or a nested dictionary of
errors for an embedded document or list.
"""
def build_dict(source):
errors_dict = {}
if isinstance(source, dict):
for field_name, error in source.items():
errors_dict[field_name] = build_dict(error)
elif isinstance(source, ValidationError) and source.errors:
return build_dict(source.errors)
else:
return str(source)
return errors_dict
if not self.errors:
return {}
return build_dict(self.errors)
def _format_errors(self):
"""Returns a string listing all errors within a document"""
def generate_key(value, prefix=""):
if isinstance(value, list):
value = " ".join([generate_key(k) for k in value])
elif isinstance(value, dict):
value = " ".join([generate_key(v, k) for k, v in value.items()])
results = f"{prefix}.{value}" if prefix else value
return results
error_dict = defaultdict(list)
for k, v in self.to_dict().items():
error_dict[generate_key(v)].append(k)
return " ".join([f"{k}: {v}" for k, v in error_dict.items()])
class DeprecatedError(Exception):
"""Raise when a user uses a feature that has been Deprecated"""
pass