[Answer]-Setting foreignkey in formsets

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classroom = classroom_form.save(commit=False)

Since you have used commit=False on the classroom form, classroom likely doesn’t have an ID value that can be assigned to student.

Save the classroom instance first (omit the commit=False).

    if classroom_form.is_valid() and student_formset.is_valid():
        classroom = classroom_form.save(commit=False) # So you can add FK
        classroom.user = request.user # exclude("user",) in forms.py so it validates
        classroom.save() # put it in the database for student
        for form in student_formset.forms:
            student = form.save(commit=False)
            student.classroom = classroom # classroom is in the database
            student.save()
        return HttpResponseRedirect('/')
👤Yuji 'Tomita' Tomita

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