django forms give: Select a valid choice. That choice is not one of the available choices

Question

I am unable to catch the values from the unit_id after the selection is done by the user and data is posted. Can someone help me to solve this.

The values o

Answer 1

Before you call form.is_valid(), do the following:

1. unit_id = request.POST.get('unit_id')

2. form.fields['unit_id'].choices = [(unit_id, unit_id)]

Now you can call form.is_valid() and your form will validate correctly.