def put(self, request, pk, format=None):
"""
Method used to update a Tag object, providing its id
and updated data in a serialized form.
@param request: HttpRequest containing the updated Tag field data.
@type request: HttpRequest
@param pk: Tag primary key, used to retrieve object data.
@type pk: int
@param format: Format used for data serialization.
@type format: string
@return: HttpResponse containing the serialized updated data
@rtype: HttpResponse
"""
logger.debug("Requested edit on Tag object with id " + str(pk))
with edit_lock:
tag = self.get_object(pk, request.user)
serializer = TagSerializer(tag, data=request.data, partial=True)
if serializer.is_valid():
serializer.save()
logger.debug("Updated data of Tag object with id " + str(pk))
check_tags(tag, request.user)
return Response(serializer.data)
logger.error("Error on data update of Tag object with id " + str(pk))
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def post(self, request, format=None):
"""
Method used to create a new Tag object.
The object data is provided in a serialized format.
If a similar Tag object (same entity, item and type) exists
it must be returned instead of creating a new one.
@param request: HttpRequest used to provide tag data.
@type request: HttpRequest
@param format: The format used for object serialization.
@type format: string
@return: HttpResponse containing the id of the new Tag object, error otherwise.
@rtype: HttpResponse
"""
logger.debug("Check if a similar Tag object exists")
item = request.data.get("item", "")
entity = request.data.get("entity", "")
type = request.data.get("type", "")
serializer = None
item_obj = Item.user_objects.by_user(request.user).get(pk=item)
if not (item_obj.owner == request.user):
Response(serializer.errors, status=status.HTTP_403_FORBIDDEN)
tag = Tag.user_objects.by_user(request.user).filter(item_id=item, entity_id=entity, type=type)
if len(tag) > 0:
logger.debug("Returned an existing Tag object " + str(item) + " " + str(entity) + " " + str(type))
serializer = TagSerializer(tag[0])
return Response(serializer.data, status=status.HTTP_201_CREATED)
else:
logger.debug("Creating a new Tag object")
serializer = TagSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
logger.debug("New Tag object saved - " + str(serializer.data["id"]))
return Response(serializer.data, status=status.HTTP_201_CREATED)
logger.error("Provided data not valid for Tag object")
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
