mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-27 03:54:01 +03:00
148 lines
4.5 KiB
Python
148 lines
4.5 KiB
Python
"""
|
|
Handled exceptions raised by REST framework.
|
|
|
|
In addition Django's built in 403 and 404 exceptions are handled.
|
|
(`django.http.Http404` and `django.core.exceptions.PermissionDenied`)
|
|
"""
|
|
from __future__ import unicode_literals
|
|
|
|
from django.utils.translation import ugettext_lazy as _
|
|
from django.utils.translation import ungettext_lazy
|
|
from rest_framework import status
|
|
from rest_framework.compat import force_text
|
|
import math
|
|
|
|
|
|
def _force_text_recursive(data):
|
|
"""
|
|
Descend into a nested data structure, forcing any
|
|
lazy translation strings into plain text.
|
|
"""
|
|
if isinstance(data, list):
|
|
return [
|
|
_force_text_recursive(item) for item in data
|
|
]
|
|
elif isinstance(data, dict):
|
|
return dict([
|
|
(key, _force_text_recursive(value))
|
|
for key, value in data.items()
|
|
])
|
|
return force_text(data)
|
|
|
|
|
|
class APIException(Exception):
|
|
"""
|
|
Base class for REST framework exceptions.
|
|
Subclasses should provide `.status_code` and `.default_detail` properties.
|
|
"""
|
|
status_code = status.HTTP_500_INTERNAL_SERVER_ERROR
|
|
default_detail = _('A server error occured')
|
|
|
|
def __init__(self, detail=None):
|
|
if detail is not None:
|
|
self.detail = force_text(detail)
|
|
else:
|
|
self.detail = force_text(self.default_detail)
|
|
|
|
def __str__(self):
|
|
return self.detail
|
|
|
|
|
|
# The recommended style for using `ValidationError` is to keep it namespaced
|
|
# under `serializers`, in order to minimize potential confusion with Django's
|
|
# built in `ValidationError`. For example:
|
|
#
|
|
# from rest_framework import serializers
|
|
# raise serializers.ValidationError('Value was invalid')
|
|
|
|
class ValidationError(APIException):
|
|
status_code = status.HTTP_400_BAD_REQUEST
|
|
|
|
def __init__(self, detail):
|
|
# For validation errors the 'detail' key is always required.
|
|
# The details should always be coerced to a list if not already.
|
|
if not isinstance(detail, dict) and not isinstance(detail, list):
|
|
detail = [detail]
|
|
self.detail = _force_text_recursive(detail)
|
|
|
|
def __str__(self):
|
|
return str(self.detail)
|
|
|
|
|
|
class ParseError(APIException):
|
|
status_code = status.HTTP_400_BAD_REQUEST
|
|
default_detail = _('Malformed request.')
|
|
|
|
|
|
class AuthenticationFailed(APIException):
|
|
status_code = status.HTTP_401_UNAUTHORIZED
|
|
default_detail = _('Incorrect authentication credentials.')
|
|
|
|
|
|
class NotAuthenticated(APIException):
|
|
status_code = status.HTTP_401_UNAUTHORIZED
|
|
default_detail = _('Authentication credentials were not provided.')
|
|
|
|
|
|
class PermissionDenied(APIException):
|
|
status_code = status.HTTP_403_FORBIDDEN
|
|
default_detail = _('You do not have permission to perform this action.')
|
|
|
|
|
|
class MethodNotAllowed(APIException):
|
|
status_code = status.HTTP_405_METHOD_NOT_ALLOWED
|
|
default_detail = _("Method '%s' not allowed.")
|
|
|
|
def __init__(self, method, detail=None):
|
|
if detail is not None:
|
|
self.detail = force_text(detail)
|
|
else:
|
|
self.detail = force_text(self.default_detail) % method
|
|
|
|
|
|
class NotAcceptable(APIException):
|
|
status_code = status.HTTP_406_NOT_ACCEPTABLE
|
|
default_detail = _('Could not satisfy the request Accept header')
|
|
|
|
def __init__(self, detail=None, available_renderers=None):
|
|
if detail is not None:
|
|
self.detail = force_text(detail)
|
|
else:
|
|
self.detail = force_text(self.default_detail)
|
|
self.available_renderers = available_renderers
|
|
|
|
|
|
class UnsupportedMediaType(APIException):
|
|
status_code = status.HTTP_415_UNSUPPORTED_MEDIA_TYPE
|
|
default_detail = _("Unsupported media type '%s' in request.")
|
|
|
|
def __init__(self, media_type, detail=None):
|
|
if detail is not None:
|
|
self.detail = force_text(detail)
|
|
else:
|
|
self.detail = force_text(self.default_detail) % media_type
|
|
|
|
|
|
class Throttled(APIException):
|
|
status_code = status.HTTP_429_TOO_MANY_REQUESTS
|
|
default_detail = _('Request was throttled.')
|
|
extra_detail = ungettext_lazy(
|
|
'Expected available in %(wait)d second.',
|
|
'Expected available in %(wait)d seconds.',
|
|
'wait'
|
|
)
|
|
|
|
def __init__(self, wait=None, detail=None):
|
|
if detail is not None:
|
|
self.detail = force_text(detail)
|
|
else:
|
|
self.detail = force_text(self.default_detail)
|
|
|
|
if wait is None:
|
|
self.wait = None
|
|
else:
|
|
self.wait = math.ceil(wait)
|
|
self.detail += ' ' + force_text(
|
|
self.extra_detail % {'wait': self.wait}
|
|
)
|