Still getting validation error despite using save(commit=False) - django

Question

Model form:
class ArticleForm(forms.ModelForm):
class Meta:
model = Article
fields = ['title', 'slug', 'category', 'description', 'thumbnail', 'status', 'author']
view:
if request.method == 'POST':
form = ArticleForm(request.POST, request.FILES)
if not request.user.is_superuser:
art = form.save(commit=False) # Error line
art.author = request.user
art.status = 'd'
art.save()
return HttpResponseRedirect(reverse('account:home'))
elif form.is_valid():
form.save()
return HttpResponseRedirect(reverse('account:home'))
return render(request, 'registration/add-update-article.html', {
'form': form
})
If the user is not a superuser, they can not fill some fields in the form so I want to set their values in this view. Isn't commit=False supposed to prevent raising validation errors? Why do I still get an error?

Answer 1

When you set the commit option to False, save() constructs the Model object, but does not save it to the database. It still preforms validation; see https://docs.djangoproject.com/en/4.1/topics/forms/modelforms/#the-save-method. You shouldn't try to suppress validation. Instead, figure out what's wrong with the form and set attributes to being not required, having a different maximum value, etc.
However, if what you want is to modify the form fields before saving, you can do this:
if request.method == 'POST':
form = ArticleForm(request.POST, request.FILES)
if not request.user.is_superuser:
Article.create(**form.cleaned_data, author=request.user, status="d")
return HttpResponseRedirect(reverse('account:home'))
elif form.is_valid():
form.save()
return HttpResponseRedirect(reverse('account:home'))
return render(request, 'registration/add-update-article.html', {
'form': form
})