def dispatch(self, request, *args, **kwargs):
'''
Check if this is a POST and has the X-RPC-Action header.
If so, dispatch the request to the method, if it exists and is
publishable.
Otherwise behaves as normal.
'''
method = request.META.get('HTTP_X_RPC_ACTION', None)
if request.method != 'POST' or method is None:
return super(RPCMixin, self).dispatch(request, *args, **kwargs)
func = getattr(self, method, None)
if not is_rpc_method(func):
return http.PreconditionFailed()
try:
data = self.get_request_data({})
# Ensure data is valid for passing as **kwargs
(lambda **kwargs: None)(**data)
except (ValueError, TypeError):
return http.BadRequest()
resp = self.execute(func, data)
return http.JsonResponse(resp)
def post(self, request):
# If there's an existing order, cancel its items
order_id = request.session.get('order_id')
if order_id:
models.OrderItem.objects.filter(order__pk=order_id).update(
status=models.OrderItem.STATE.CANCELLED)
cart = Cart.from_session(self.request.session)
if not cart:
return http.BadRequest()
order = models.Order.from_cart(request.user, cart)
request.session['order_id'] = order.pk
return self.single_response(object=order)
def dispatch_rpc(self, request, function_name):
func = getattr(self, function_name, None)
if not is_rpc_method(func):
return http.PreconditionFailed()
data = self.get_request_data({})
sig = inspect.signature(func)
try:
sig.bind(**data)
except TypeError as e:
return http.BadRequest(e.args[0])
resp = self.execute(func, data)
return http.JsonResponse(resp)
def dispatch(self, request, *args, **kwargs):
method = request.META.get('HTTP_X_RPC_ACTION', None)
if request.method != 'POST' or method is None:
return super(RPCMixin, self).dispatch(request, *args, **kwargs)
func = getattr(self, method, None)
if not is_rpc_method(func):
return http.PreconditionFailed()
try:
data = self.get_request_data({})
# Ensure data is valid for passing as **kwargs
(lambda **kwargs: None)(**data)
except (ValueError, TypeError):
return http.BadRequest()
resp = self.execute(func, data)
return http.JsonResponse(resp)