from django.utils.translation import gettext_lazy as _
from rest_framework import exceptions, status
from rest_framework_json_api import utils
from .settings import json_api_settings
def rendered_with_json_api(view):
from rest_framework_json_api.renderers import JSONRenderer
for renderer_class in getattr(view, 'renderer_classes', []):
if issubclass(renderer_class, JSONRenderer):
return True
return False
def exception_handler(exc, context):
# Import this here to avoid potential edge-case circular imports, which
# crashes with:
# "ImportError: Could not import 'rest_framework_json_api.parsers.JSONParser' for API setting
# 'DEFAULT_PARSER_CLASSES'. ImportError: cannot import name 'exceptions'.'"
#
# Also see: https://github.com/django-json-api/django-rest-framework-json-api/issues/158
from rest_framework.views import exception_handler as drf_exception_handler
# Render exception with DRF
response = drf_exception_handler(exc, context)
if not response:
return response
# Use regular DRF format if not rendered by DRF JSON API and not uniform
is_json_api_view = rendered_with_json_api(context['view'])
is_uniform = json_api_settings.UNIFORM_EXCEPTIONS
if not is_json_api_view and not is_uniform:
return response
# Convert to DRF JSON API error format
response = utils.format_drf_errors(response, context, exc)
# Add top-level 'errors' object when not rendered by DRF JSON API
if not is_json_api_view:
response.data = utils.format_errors(response.data)
return response
class Conflict(exceptions.APIException):
status_code = status.HTTP_409_CONFLICT
default_detail = _('Conflict.')
