141 lines
3.6 KiB
Python
141 lines
3.6 KiB
Python
"""
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Global Django exception and warning classes.
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"""
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from functools import reduce
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import operator
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from django.utils.encoding import force_text
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class DjangoRuntimeWarning(RuntimeWarning):
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pass
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class ObjectDoesNotExist(Exception):
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"""The requested object does not exist"""
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silent_variable_failure = True
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class MultipleObjectsReturned(Exception):
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"""The query returned multiple objects when only one was expected."""
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pass
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class SuspiciousOperation(Exception):
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"""The user did something suspicious"""
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class SuspiciousMultipartForm(SuspiciousOperation):
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"""Suspect MIME request in multipart form data"""
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pass
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class SuspiciousFileOperation(SuspiciousOperation):
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"""A Suspicious filesystem operation was attempted"""
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pass
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class DisallowedHost(SuspiciousOperation):
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"""HTTP_HOST header contains invalid value"""
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pass
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class DisallowedRedirect(SuspiciousOperation):
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"""Redirect to scheme not in allowed list"""
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pass
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class PermissionDenied(Exception):
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"""The user did not have permission to do that"""
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pass
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class ViewDoesNotExist(Exception):
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"""The requested view does not exist"""
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pass
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class MiddlewareNotUsed(Exception):
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"""This middleware is not used in this server configuration"""
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pass
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class ImproperlyConfigured(Exception):
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"""Django is somehow improperly configured"""
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pass
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class FieldError(Exception):
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"""Some kind of problem with a model field."""
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pass
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NON_FIELD_ERRORS = '__all__'
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class ValidationError(Exception):
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"""An error while validating data."""
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def __init__(self, message, code=None, params=None):
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"""
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ValidationError can be passed any object that can be printed (usually
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a string), a list of objects or a dictionary.
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"""
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if isinstance(message, dict):
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self.error_dict = message
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elif isinstance(message, list):
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self.error_list = message
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else:
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self.code = code
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self.params = params
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self.message = message
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self.error_list = [self]
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@property
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def message_dict(self):
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message_dict = {}
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for field, messages in self.error_dict.items():
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message_dict[field] = []
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for message in messages:
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if isinstance(message, ValidationError):
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message_dict[field].extend(message.messages)
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else:
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message_dict[field].append(force_text(message))
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return message_dict
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@property
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def messages(self):
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if hasattr(self, 'error_dict'):
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message_list = reduce(operator.add, self.error_dict.values())
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else:
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message_list = self.error_list
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messages = []
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for message in message_list:
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if isinstance(message, ValidationError):
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params = message.params
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message = message.message
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if params:
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message %= params
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message = force_text(message)
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messages.append(message)
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return messages
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def __str__(self):
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if hasattr(self, 'error_dict'):
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return repr(self.message_dict)
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return repr(self.messages)
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def __repr__(self):
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return 'ValidationError(%s)' % self
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def update_error_dict(self, error_dict):
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if hasattr(self, 'error_dict'):
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if error_dict:
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for k, v in self.error_dict.items():
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error_dict.setdefault(k, []).extend(v)
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else:
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error_dict = self.error_dict
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else:
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error_dict[NON_FIELD_ERRORS] = self.error_list
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return error_dict
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