Django Model Form not saving

Question

I have a Django model form which when I use the following, isn't saving

if request.method == 'POST':
    form = AbsenceForm(request.POST, instance=request.user)
    if form.is_valid():
        form.save()

forms.py

class DateInput(forms.DateInput):
    input_type = 'date'

class AbsenceForm(forms.ModelForm):
    class Meta:
        model = NotWorking
        exclude = ['user']
        widgets = {
            'date': DateInput()
        }

Can you help please.

Answer 1

You're using instance wrong.

instance on a model form is supposed to be of the same class as the model you're referring to. It is used in UpdateView s to bind the form to an existing instance instead of creating a new instance up on save .

Example from the documentation :

# Create a form to edit an existing Article, but use
# POST data to populate the form.
>>> a = Article.objects.get(pk=1)
>>> f = ArticleForm(request.POST, instance=a)
>>> f.save()

In order to attach the user instance to the form you should set it on the form instead of providing it as an instance argument like detailed in this question .

if request.method == 'POST':
    form = AbsenceForm(request.POST)
    form
    if form.is_valid():
        instance = form.save(commit=False)
        instance.user = request.user
        instance.save()