File "/Library/Python/2.7/site-packages/django/utils/dateparse.py", line 94, in parse_datetime
    match = datetime_re.match(value)
TypeError: expected string or buffer

class User(models.Model):
    userID = models.AutoField(primary_key = True)
    username = models.CharField(max_length = 30, unique = True)
    first_name = models.CharField(max_length = 30, blank = False)
    last_name = models.CharField(max_length = 30, blank = False)
    email = models.EmailField(blank = False, unique = True)
    password = models.CharField(max_length = 30)
    class_year = models.IntegerField(validators=[MinValueValidator(4),MaxValueValidator(4),])
    created = models.DateTimeField(auto_now = True, editable = False)
    #this field actually doesn't get updated yet, please debug
    lastActive = models.DateTimeField(auto_now = True, editable = True)

class LastActiveMiddleware(MiddlewareMixin):
    def process_response(self, request, response):
        if request.user.is_authenticated():
            User.objects.filter(pk = request.user.pk).update(lastActive=timezone.now())

        return response

def signup(request):
    if request.method == 'POST':
        form = SignUpForm(request.POST)

        if form.is_valid():

            form.signup(form, request)
            username = form.cleaned_data.get('email')
            first_name = form.cleaned_data.get('first_name')
            last_name = form.cleaned_data.get('last_name')
            email = form.cleaned_data.get('email')
            class_year = form.cleaned_data.get('class_year')
            password = form.cleaned_data.get('password1')

            # username = email
            user = authenticate(username = username, password = password)
            newUser = models.User(username = username, first_name=first_name, last_name = last_name, class_year = class_year,email = email)
            newUser.save()
            login(request, user)
            return redirect('home')

    else:
        form = SignUpForm()

    return render(request, 'signup.html', {'form': form})