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55 lines
2.0 KiB
55 lines
2.0 KiB
5 years ago
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# -*- coding: utf-8 -*-
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"""Exception classes for marshmallow-related errors."""
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from marshmallow.compat import basestring
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class MarshmallowError(Exception):
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"""Base class for all marshmallow-related errors."""
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pass
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class ValidationError(MarshmallowError):
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"""Raised when validation fails on a field. Validators and custom fields should
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raise this exception.
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:param message: An error message, list of error messages, or dict of
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error messages.
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:param list field_names: Field names to store the error on.
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If `None`, the error is stored in its default location.
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:param list fields: `Field` objects to which the error applies.
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"""
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def __init__(self, message, field_names=None, fields=None, data=None, **kwargs):
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if not isinstance(message, dict) and not isinstance(message, list):
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messages = [message]
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else:
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messages = message
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#: String, list, or dictionary of error messages.
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#: If a `dict`, the keys will be field names and the values will be lists of
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#: messages.
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self.messages = messages
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#: List of field objects which failed validation.
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self.fields = fields
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if isinstance(field_names, basestring):
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#: List of field_names which failed validation.
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self.field_names = [field_names]
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else: # fields is a list or None
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self.field_names = field_names or []
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# Store nested data
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self.data = data
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self.kwargs = kwargs
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MarshmallowError.__init__(self, message)
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def normalized_messages(self, no_field_name="_schema"):
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if isinstance(self.messages, dict):
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return self.messages
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if len(self.field_names) == 0:
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return {no_field_name: self.messages}
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return dict((name, self.messages) for name in self.field_names)
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class RegistryError(NameError):
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"""Raised when an invalid operation is performed on the serializer
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class registry.
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"""
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pass
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