Facebook problem + django - django

Question

I am trying to write a facebook app where user can see the status history of his friends.
Everything seems to work fine until I try to save the status information in my DB.
here is code :
class UserStatus(models.Model):
facebookid = models.IntegerField()
time = models.IntegerField()
status_msg = models.CharField(max_length = 2000)
#facebook.require_login()
def canvas(request):
# Get the User object
user, created = FacebookUser.objects.get_or_create(id = request.facebook.uid)
user_lastname = request.facebook.users.getInfo([request.facebook.uid], ['last_name'])[0]['last_name']
query = "SELECT time,message FROM status WHERE uid=%s" % request.facebook.uid
result = request.facebook.fql.query(query)
So result give me all the information of the status.
so my problem is its give error when I try to save it.
userstatus = UserStatus()
for item in result:
userstatus.facebookid = request.facebook.uid
userstatus.time = item.time
userstatus.msg = item.message
userstatus.save()
error:
Errors while loading page from application
Received HTTP error code 500 while loading
So how can I fix this.
thanks.

Answer 1

First you should check if you are getting results from this,
result = request.facebook.fql.query(query)
Make sure that the results are in correct format required by your model ( uid is integer, time is integer and message is string.
Again make sure that result is a valid python object and not a JSON string/Object.
Remember python is not fully compatible with JSON so if result is JSON then do this to convert it to python Object,
import simplejson
result = simpljson.loads(result) # if result was a JSON string
result = simpljson.loads(simplejson.dumps(result)) # if result was a JSON object
Check if now result is a list of dictionaries { "time" : 123456, "messaage": "xyz"}.
for item in result:
userstatus = UserStatus()
userstatus.facebookid = request.facebook.uid
userstatus.time = item["time"]
userstatus.msg = item["message"]
userstatus.save()
And you should not have any errors now.