Django updateview (cbv and fbv) to upload multiple files not working - django

Question

I am trying to upload files (single and multiple) with an UpdateView via an update template but I keep getting a 'This field is required' error when I submit, and the files aren't uploaded, of course. All required fields are filled with valid data types and the file upload fields are optional, so I don't understand where this error is coming from.
I strongly suspect there's an error in my view specifically in the if form.is_valid(): section. I tried using both function-based (FBV) and class-based (CBV) views, still getting the same error. I have even created a separate model for the multiple files upload field and a separate form class that extends the UpdateForm class, and I'm still getting the same error.
This is the model for the multiple files upload field:
class shareCapitalFiles(models.Model):
# Foreign key
coopform = models.ForeignKey(CoopForm, on_delete=models.CASCADE)
# Attach evidence of share capital
attach_share_capital = models.FileField('Attach Share Capital', upload_to="documents", blank=True)
This is my forms.py:
# Update Form
class updateCoopForm(forms.ModelForm):
nature_registration = forms.ChoiceField(widget=forms.RadioSelect(attrs={'class': 'flex inline-flex', 'cursor': 'pointer'}), choices=CoopForm.REGISTRATION_TYPE)
have_bye_laws = forms.ChoiceField(widget=forms.RadioSelect(attrs={'class': 'flex inline-flex', 'cursor': 'pointer'}), choices=CoopForm.BYE_LAWS_CHOICES)
attach_bye_laws = forms.FileField(required=False)
class Meta:
model = CoopForm
fields = '__all__'
widgets = {
'first_purpose': forms.Textarea(attrs={'rows':2}),
'second_purpose': forms.Textarea(attrs={'rows':2}),
'third_purpose': forms.Textarea(attrs={'rows':2}),
'first_origin_meeting_date': forms.DateInput(attrs={'type': 'date'}),
'second_origin_meeting_date': forms.DateInput(attrs={'type': 'date'})
}
class shareCapitalForm(updateCoopForm):
attach_share_capital = forms.FileField(label='Attach Share Capital',widget=forms.ClearableFileInput(attrs={'multiple': True}), required=False)
class Meta(updateCoopForm.Meta):
fields = updateCoopForm.Meta.fields
this is my CBV
class updateFormView(UpdateView):
model = CoopForm
form_class = shareCapitalForm
context_object_name = 'obj'
template_name = 'updateform.html'
def get_queryset(self):
return CoopForm.objects.all()
def get_success_url(self):
return reverse('formdetails', kwargs={'pk': self.object.id})
def get_context_data(self, **kwargs):
context = super(updateFormView, self).get_context_data(**kwargs)
if self.request.POST:
context['form'] = shareCapitalForm(self.request.POST, self.request.FILES, nstance=self.object)
else:
context['form'] = shareCapitalForm(instance=self.object)
return context
def post(self, request, *args, **kwargs):
self.object = self.get_object()
form_class = self.get_form_class()
form = self.get_form(form_class)
files = self.request.FILES.getlist('attach_share_capital')
if form.is_valid():
update = form.save(commit=False)
if files:
for f in files:
instance = shareCapitalFiles.objects.create(coopform=update, attach_share_capital=f)
instance.save()
messages.success(request, 'Files uploaded successfully')
#update.author = self.request.user
update.save()
return self.form_valid(form)
else:
return self.form_invalid(form)
this is my FBV
def updateformview(request, pk, *args, **kwargs):
# fetch the object related to passed id
obj = get_object_or_404(CoopForm, id=pk)
# pass the object as instance in form
form = shareCapitalForm(request.POST or None, request.FILES or None, instance=obj)
# get the template
template = loader.get_template('updateform.html')
# if the form is being updated
if request.method == 'POST':
# retrieve multiples files from model field
files = request.FILES.getlist('attach_share_capital')
# save the data from the form and
# redirect to detail_view
if form.is_valid():
update = form.save(commit=False)
update.save()
if files:
for f in files:
instance = shareCapitalFiles.objects.create(coopform=update, attach_share_capital=f)
instance.save()
return HttpResponseRedirect(reverse('formdetails', kwargs={'pk': id}))
context = {
'form': form,
'obj': obj
}
return HttpResponse(template.render(context, request))
this is the html code for the multiple files upload field
<div class="grid gap-6 mt-1 mx-auto md:grid-cols-2 lg:grid-cols-2 px-6 pt-4 pb-8 bg-stone-50 border border-1 border-gray-300 shadow-md">
<!-- Attach Share Capital -->
<div>
<label for="attach_share_capital" class="block mb-2 text-md font-bold text-gray-500">
{{ form.attach_share_capital.label }}
</label>
{% render_field form.attach_share_capital class+="cursor-pointer text-md md:text-md font-medium block rounded-sm w-full p-2 border border-2 border-gray-300 placeholder-gray-500 text-gray-600 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500" %}
<p class="mt-1 text-sm text-gray-500">PDF, DOC (WORD), PNG OR JPG formats only. You can attach multiple files</p>
</div>
{% if form.errors.attach_share_capital %}
<span class="text-red-600 font-medium">{{ form.errors.attach_share_capital }}</span>
{% endif %}
</div>

Answer 1

I was able to figure out the problem. It was the ID field in my models.py. It was set to models.IntegerField instead of models.AutoField or models.BigAutoField, so it was expecting an input from the user instead of django automatically filling and incrementing it
# what caused the error
id = models.IntegerField(primary_key=True)
# solution
id = models.BigAutoField(primary_key=True)