26b3a40133
* INCR-108: Run python-modernize on openedx/core/lib * Fixed urlencode import * Fixed diff quality warnings and six.string_types error * Fixed pickle import * Fixed iteritems import * Fixed ungrouped imports * Fixed six.moves import issues
35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
"""
|
|
Django Rest Framework view mixins.
|
|
"""
|
|
from __future__ import absolute_import
|
|
from django.core.exceptions import ValidationError
|
|
from django.http import Http404
|
|
from rest_framework import status
|
|
from rest_framework.mixins import CreateModelMixin
|
|
from rest_framework.response import Response
|
|
|
|
|
|
class PutAsCreateMixin(CreateModelMixin):
|
|
"""
|
|
Backwards compatibility with Django Rest Framework v2, which allowed
|
|
creation of a new resource using PUT.
|
|
"""
|
|
|
|
def update(self, request, *args, **kwargs):
|
|
"""
|
|
Create/update course modes for a course.
|
|
"""
|
|
# First, try to update the existing instance
|
|
try:
|
|
try:
|
|
return super(PutAsCreateMixin, self).update(request, *args, **kwargs)
|
|
except Http404:
|
|
# If no instance exists yet, create it.
|
|
# This is backwards-compatible with the behavior of DRF v2.
|
|
return super(PutAsCreateMixin, self).create(request, *args, **kwargs)
|
|
|
|
# Backwards compatibility with DRF v2 behavior, which would catch model-level
|
|
# validation errors and return a 400
|
|
except ValidationError as err:
|
|
return Response(err.messages, status=status.HTTP_400_BAD_REQUEST)
|