Instance of djaform not updating - django

Question

I have the next form in Django:
class Medical(forms.ModelForm):
worker= forms.ModelChoiceField(
queryset=Worker.objects.none(),
empty_label=None,
widget=forms.Select(attrs={'class': 'form-control'})
)
description=forms.CharField(
widget=forms.Textarea(attrs={'class': 'form-control'})
)
upload=forms.FileField(
widget=forms.FileInput(attrs={'class': 'form-control'})
)
class Meta:
model = Medical_Issue
fields = (
'worker',
'description',
'upload',
)
def __init__(self, *args, **kwargs):
user_id = kwargs.pop('user_id')
method=kwargs.pop('method')
super().__init__(*args, **kwargs)
self.fields['worker'].queryset = Worker.objects.filter(user_id=user_id)
def save(self, commit=True):
m = super(Medical, self).save(commit=False)
m.worker=self.cleaned_data['worker']
m.description=self.cleaned_data['description']
m.upload=self.cleaned_data['upload']
if commit:
m.save()
return m
And following views:
def medical_list(request):
worker=Worker.objects.filter(user_id=request.user.id).get()
issues=Medical_Issue.objects.filter(worker=worker.id).order_by('-created_at')
return render(request,'medical_list.html', {'medical_issues':issues})
def medical_add(request):
print(request.user.id)
if request.method == "POST":
form = Medical(request.POST,request.FILES,user_id=request.user, method= 'ADD')
if form.is_valid():
form.save()
return redirect('medical_list')
else:
form = Medical(user_id=request.user, method= 'ADD')
return render(request, 'medical_add.html', {'method':'ADD','form': form})
def medical_edit(request,id_issue):
worker=Worker.objects.get(user_id=request.user)
issues=Medical_Issue.objects.filter(worker=worker).order_by('-created_at')
issue= Medical_Issue.objects.get(id=id_issue)
if request.method == 'GET':
form = Medical(user_id=worker.user_id,instance=issue, method= 'EDIT')
else:
form = Medical(request.POST, request.FILES, user_id=worker.user_id, method= 'EDIT')
if form.is_valid():
form.save()
return redirect('medical_list')
return render(request,'medical_add.html', {'method':'EDIT','form': form})
Main probles is when adding, it saves record just fine, but when editing, it is creating a new instance of the issue.
I´m trying to make it modifying save method on form, but maybe it´s not the right approach? With thata said, I have tried to add an id field to the form, but same results from this
Thanks

Answer 1

I suspect that you don't pass the correct instance value to the form in your medical_edit view:
issue= Medical_Issue.objects.get(id=id_issue)
if request.method == 'GET':
form = Medical(
user_id=worker.user_id,
instance=issue, # <-- issue or parte?
method='EDIT'
)
UPDATE
It should also include the instance argument in the POST method.
if request.method == 'GET':
# ...
else:
form = Medical(
request.POST,
request.FILES,
instance=issue, # <--
user_id=worker.user_id,
method= 'EDIT'
)