filter() and lists with DateTime field not implemented?

Hello Gang, I have the function below which returns this error ->
"FieldError at /by_date/
Join on field 'first_day_start_time' not permitted. Did you misspell
'month' for the lookup type?"

The function will work in other objects (even with model
relationships), but not when the __month filter is used.
Has anyone got a work-around for this?

if s_form.is_valid():
if s_form.cleaned_data['start_date']:
s_date_month = request.POST.getlist('start_date_month')
s_date_year = request.POST.getlist('start_date_year')
expo_obj =
expo_obj.filter(first_day_start_time__month__in=s_date_month )



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Bust0ut, Surgemcgee: Systems Engineer ---
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