exceptions.py

from django.utils import six, encoding
from rest_framework.views import exception_handler as drf_exception_handler
from rest_framework_json_api.utils import format_value


def exception_handler(exc, context):
    response = drf_exception_handler(exc, context)

    errors = []
    for field, error in response.data.items():
        field = format_value(field)
        pointer = '/data/attributes/{}'.format(field)
        # see if they passed a dictionary to ValidationError manually
        if isinstance(error, dict):
            errors.append(error)
        else:
            for message in error:
                errors.append({
                    'detail': message,
                    'source': {
                        'pointer': pointer,
                    },
                    'status': encoding.force_text(response.status_code),
                })
    context['view'].resource_name = 'errors'
    response.data = errors
    return response