TypeError: Object not iterable - Django create/get

TypeError: Object not iterable - Django create/get

I've been encountering this issue for some time today, and a permanent
solution would be helpful.
I have a Vendor object defined as
class Vendors(models.Model):
vendor_id = models.IntegerField(primary_key=True)
vendor_name = models.CharField(max_length=50L)
demo_vendor = models.IntegerField()
url = models.CharField(max_length = 100L, null = True)
logo = models.CharField(max_length = 100L, null = True)
date_created = models.DateTimeField()
class Meta:
db_table = 'txn_vendors'
In a view, I'm implementing a form to allow for creating new vendors along
with updating existing ones. To do this, I had to implement a
getVendorData method, which required serializing the data in JSON before
sending to the client.
serialized = serializers.serialize("json",
Vendors.objects.filter(vendor_id = incomingData["id"]))
In that view, if I use filter in place of get, I don't get a TypeError :
Vendors is not iterable message.
To implement create and update functionality in one method, I wrote
def saveVendorData(request):
incomingData = simplejson.loads(request.POST.get("data", None))
if incomingData is not None:
vendor = None
newVendor = False
if incomingData["id"] == "":
vendor = Vendors.objects.create(vendor_name =
incomingData["vendor_name"], demo_vendor = False, date_created =
datetime.now(), url = incomingData["vendor_url"], logo = None)
newVendor = True
else:
vendor = Vendors.objects.get(vendor_id = incomingData["id"])
vendor.vendor_name = incomingData["vendor_name"]
vendor.url = incomingData["vendor_url"]
vendor.save()
serialized = serializers.serialize("json", vendor)
return HttpResponse(simplejson.dumps({"success" : "true", "new_vendor"
: newVendor, "data" : serialized}), mimetype = "application/json")
else:
return HttpResponse(simplejson.dumps({"success" : "false", "message" :
"Issue with data reception in server"}))
When I try to create a new Vendors object with valid data, I get the
TypeError response detailed above and generating this stacktrace:
Vendor Data: [{"pk": 5, "model": "app.vendors", "fields": {"url":
"nurturing seniors", "demo_vendor": 1, "vendor_name": "NURTURING SENIORS",
"date_created": null, "logo": null}}]
[15/Aug/2013 20:38:01] "POST /getVendorData/ HTTP/1.1" 200 218
Internal Server Error: /saveVendorData/
Traceback (most recent call last):
File
"/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py",
line 115, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "/media/Storage/code_projects/Rowdmap_Uboat/app/taxonomy_views.py",
line 272, in saveVendorData
serialized = serializers.serialize("json", vendor)
File
"/usr/local/lib/python2.7/dist-packages/django/core/serializers/__init__.py",
line 99, in serialize
s.serialize(queryset, **options)
File
"/usr/local/lib/python2.7/dist-packages/django/core/serializers/base.py",
line 42, in serialize
for obj in queryset:
TypeError: 'Vendors' object is not iterable
I need to send this data to the client, since creating a new Vendors
record results in the insertion of a new HTML element in several locations
in the view.